Foreword |
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xvii | |
Preface |
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xix | |
About the author |
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xxv | |
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1 What is mathematical induction? |
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1 | (18) |
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1 | (1) |
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1.2 An informal introduction to mathematical induction |
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2 | (1) |
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1.3 Ingredients of a proof by mathematical induction |
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3 | (1) |
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1.4 Two other ways to think of mathematical induction |
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4 | (1) |
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1.5 A simple example: Dice |
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5 | (1) |
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6 | (3) |
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1.7 A variety of applications |
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9 | (2) |
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1.8 History of mathematical induction |
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11 | (4) |
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1.9 Mathematical induction in modern literature |
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15 | (4) |
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19 | (16) |
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19 | (1) |
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20 | (2) |
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22 | (1) |
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2.4 Principle of mathematical induction |
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23 | (1) |
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2.5 Properties of natural numbers |
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24 | (6) |
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30 | (3) |
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33 | (2) |
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3 Variants of finite mathematical induction |
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35 | (16) |
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35 | (1) |
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3.2 Strong mathematical induction |
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36 | (2) |
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38 | (4) |
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3.4 Alternative forms of mathematical induction |
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42 | (1) |
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43 | (3) |
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3.6 Fermat's method of infinite descent |
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46 | (2) |
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48 | (3) |
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4 Inductive techniques applied to the infinite |
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51 | (18) |
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4.1 More on well-ordered sets |
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51 | (2) |
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4.2 Transfinite induction |
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53 | (1) |
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54 | (1) |
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55 | (2) |
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4.5 Axiom of choice and its equivalent forms |
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57 | (12) |
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5 Paradoxes and sophisms from induction |
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69 | (8) |
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5.1 Trouble with the language? |
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70 | (1) |
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70 | (1) |
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5.1.2 Paradox of the unexpected exam |
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70 | (1) |
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71 | (1) |
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71 | (1) |
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71 | (1) |
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71 | (1) |
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71 | (2) |
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72 | (1) |
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5.3.2 All horses are the same color |
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72 | (1) |
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5.3.3 Non-parallel lines go through one point |
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72 | (1) |
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73 | (4) |
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5.4.1 A new formula for triangular numbers |
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73 | (1) |
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5.4.2 All positive integers are equal |
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74 | (1) |
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5.4.3 Four weighings suffice |
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74 | (3) |
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77 | (12) |
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77 | (3) |
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80 | (1) |
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80 | (1) |
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6.4 A sequence of integers? |
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80 | (1) |
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6.5 Sequences with only primes? |
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81 | (1) |
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82 | (1) |
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83 | (1) |
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6.8 Goldbach's conjecture |
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83 | (1) |
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83 | (1) |
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84 | (1) |
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85 | (1) |
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86 | (3) |
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7 How to prove by induction |
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89 | (20) |
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7.1 Tips on proving by induction |
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89 | (5) |
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7.2 Proving more can be easier |
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94 | (3) |
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7.3 Proving limits by induction |
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97 | (6) |
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7.4 Which kind of induction is preferable? |
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103 | (6) |
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7.4.1 When is induction needed? |
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103 | (3) |
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7.4.2 Which kind of induction to use? |
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106 | (3) |
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109 | (16) |
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110 | (3) |
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113 | (3) |
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8.2.1 Using other results in a proof |
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113 | (1) |
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8.2.2 Clearly, it's trivial! |
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114 | (1) |
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115 | (1) |
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115 | (1) |
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8.2.5 We, let's, our, will, now, must |
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115 | (1) |
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8.3 Using notation and abbreviations |
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116 | (9) |
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II Applications and exercises |
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125 | (28) |
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9.1 Arithmetic progressions |
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125 | (3) |
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9.2 Sums of finite geometric series and related series |
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128 | (1) |
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9.3 Power sums, sums of a single power |
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129 | (2) |
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9.4 Products and sums of products |
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131 | (1) |
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9.5 Sums or products of fractions |
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132 | (2) |
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9.6 Identities with binomial coefficients |
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134 | (10) |
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141 | (1) |
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141 | (1) |
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9.6.3 Faulhaber's formula for power sums |
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142 | (2) |
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9.7 Gaussian coefficients |
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144 | (1) |
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9.8 Trigonometry identities |
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145 | (4) |
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9.9 Miscellaneous identities |
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149 | (4) |
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153 | (8) |
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161 | (26) |
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161 | (6) |
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167 | (3) |
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170 | (6) |
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11.4 Numbers expressible as sums |
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176 | (1) |
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176 | (2) |
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178 | (1) |
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179 | (8) |
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11.7.1 Finite continued fractions |
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181 | (3) |
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11.7.2 Infinite continued fractions |
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184 | (3) |
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187 | (30) |
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12.1 Difference sequences |
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188 | (2) |
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190 | (10) |
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200 | (1) |
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201 | (2) |
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203 | (5) |
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203 | (1) |
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12.5.2 Catalan numbers defined by a formula |
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203 | (1) |
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12.5.3 Cn as a number of ways to compute a product |
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204 | (1) |
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12.5.4 The definitions are equivalent |
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205 | (2) |
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12.5.5 Some occurrences of Catalan numbers |
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207 | (1) |
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208 | (1) |
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209 | (4) |
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12.7.1 Ascents, descents, rises, falls |
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209 | (1) |
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12.7.2 Definitions for Eulerian numbers |
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210 | (2) |
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12.7.3 Eulerian number exercises |
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212 | (1) |
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213 | (1) |
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12.9 Stirling numbers of the second kind |
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214 | (3) |
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217 | (16) |
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217 | (6) |
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223 | (3) |
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226 | (3) |
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229 | (4) |
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233 | (6) |
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233 | (2) |
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235 | (1) |
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14.3 Well-formed formulae |
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235 | (1) |
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236 | (3) |
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239 | (22) |
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239 | (3) |
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242 | (4) |
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15.3 Minimum spanning trees |
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246 | (1) |
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247 | (2) |
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249 | (1) |
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250 | (2) |
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252 | (1) |
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253 | (2) |
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15.9 Extremal graph theory |
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255 | (2) |
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15.10 Digraphs and tournaments |
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257 | (1) |
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258 | (3) |
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16 Recursion and algorithms |
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261 | (28) |
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16.1 Recursively defined operations |
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262 | (1) |
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16.2 Recursively defined sets |
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262 | (1) |
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16.3 Recursively defined sequences |
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263 | (14) |
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16.3.1 Linear homogeneous recurrences of order 2 |
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265 | (1) |
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16.3.2 Method of characteristic roots |
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266 | (3) |
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16.3.3 Applying the method of characteristic roots |
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269 | (1) |
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16.3.4 Linear homogeneous recurrences of higher order |
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270 | (1) |
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16.3.5 Non-homogeneous recurrences |
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271 | (1) |
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16.3.6 Finding recurrences |
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272 | (1) |
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16.3.7 Non-linear recurrence |
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273 | (3) |
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276 | (1) |
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16.4 Loop invariants and algorithms |
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277 | (3) |
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280 | (4) |
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281 | (1) |
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281 | (1) |
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282 | (2) |
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284 | (5) |
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284 | (1) |
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16.6.2 The master theorem |
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285 | (1) |
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16.6.3 Closest pair of points |
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286 | (3) |
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289 | (20) |
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17.1 Introduction to game theory |
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289 | (1) |
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290 | (4) |
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17.2.1 Definitions and terminology |
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290 | (2) |
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292 | (1) |
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293 | (1) |
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17.3 Tiling with dominoes and trominoes |
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294 | (1) |
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17.4 Dirty faces, cheating wives, muddy children, and colored hats |
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295 | (5) |
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17.4.1 A parlor game with sooty fingers |
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295 | (1) |
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296 | (2) |
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17.4.3 The muddy children puzzle |
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298 | (1) |
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299 | (1) |
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17.4.5 More related puzzles and references |
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300 | (1) |
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17.5 Detecting a counterfeit coin |
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300 | (4) |
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304 | (5) |
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304 | (1) |
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304 | (3) |
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17.6.3 The gossip problem |
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307 | (1) |
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17.6.4 Cars on a circular track |
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307 | (2) |
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18 Relations and functions |
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309 | (16) |
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309 | (1) |
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310 | (4) |
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314 | (6) |
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314 | (1) |
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18.3.2 Differential equations |
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315 | (1) |
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316 | (4) |
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320 | (2) |
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18.5 Primitive recursive functions |
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322 | (1) |
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18.6 Ackermann's function |
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322 | (3) |
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19 Linear and abstract algebra |
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325 | (24) |
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19.1 Matrices and linear equations |
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325 | (9) |
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19.2 Groups and permutations |
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334 | (4) |
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19.2.1 Semigroups and groups |
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334 | (1) |
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335 | (3) |
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338 | (1) |
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338 | (3) |
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341 | (8) |
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349 | (16) |
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350 | (4) |
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354 | (4) |
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20.3 Lines, planes, regions, and polyhedra |
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358 | (5) |
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363 | (2) |
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365 | (22) |
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366 | (1) |
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21.2 Basic Ramsey theorems |
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367 | (6) |
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21.3 Parameter words and combinatorial spaces |
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373 | (5) |
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378 | (5) |
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21.5 High chromatic number and large girth |
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383 | (4) |
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22 Probability and statistics |
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387 | (18) |
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387 | (5) |
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22.1.1 Probability spaces |
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388 | (1) |
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22.1.2 Independence and random variables |
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389 | (1) |
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22.1.3 Expected value and conditional probability |
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390 | (1) |
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22.1.4 Conditional expectation |
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391 | (1) |
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22.2 Basic probability exercises |
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392 | (1) |
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393 | (1) |
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22.4 The ballot problem and the hitting game |
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394 | (2) |
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396 | (1) |
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397 | (8) |
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III Solutions and hints to exercises |
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23 Solutions: Foundations |
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405 | (8) |
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23.1 Solutions: Properties of natural numbers |
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405 | (4) |
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23.2 Solutions: Well-ordered sets |
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409 | (1) |
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23.3 Solutions: Fermat's method of infinite descent |
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410 | (3) |
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24 Solutions: Inductive techniques applied to the infinite |
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413 | (2) |
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24.1 Solutions: More on well-ordered sets |
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413 | (1) |
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24.2 Solutions: Axiom of choice and equivalent forms |
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413 | (2) |
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25 Solutions: Paradoxes and sophisms |
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415 | (4) |
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25.1 Solutions: Trouble with the language? |
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415 | (1) |
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25.2 Solutions: Missed a case? |
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416 | (1) |
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25.3 Solutions: More deceit? |
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416 | (3) |
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26 Solutions: Empirical induction |
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419 | (6) |
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26.1 Solutions: Introduction |
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419 | (1) |
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26.2 Solutions: A Sequence of integers? |
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419 | (3) |
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26.3 Solutions: Sequences with only primes? |
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422 | (1) |
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26.4 Solutions: Divisibility |
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423 | (1) |
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26.5 Solutions: Never a Square? |
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423 | (1) |
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26.6 Solutions: Goldbach's conjecture |
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423 | (1) |
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26.7 Solutions: Cutting the Cake |
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424 | (1) |
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26.8 Solutions: Sums of hex numbers |
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424 | (1) |
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425 | (90) |
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27.1 Solutions: Arithmetic progressions |
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425 | (35) |
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27.2 Solutions: Sums with binomial coefficients |
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460 | (22) |
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27.3 Solutions: Trigonometry |
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482 | (23) |
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27.4 Solutions: Miscellaneous identities |
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505 | (10) |
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28 Solutions: Inequalities |
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515 | (38) |
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29 Solutions: Number theory |
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553 | (54) |
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553 | (9) |
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29.2 Solutions: Congruences |
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562 | (8) |
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29.3 Solutions: Divisibility |
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570 | (32) |
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29.4 Solutions: Expressible as sums |
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602 | (1) |
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29.5 Solutions: Egyptian fractions |
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603 | (1) |
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29.6 Solutions: Farey fractions |
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603 | (1) |
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29.7 Solutions: Continued fractions |
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603 | (4) |
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607 | (44) |
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30.1 Solutions: Difference sequences |
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607 | (2) |
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30.2 Solutions: Fibonacci numbers |
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609 | (26) |
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30.3 Solutions: Lucas numbers |
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635 | (3) |
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30.4 Solutions: Harmonic numbers |
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638 | (6) |
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30.5 Solutions: Catalan numbers |
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644 | (1) |
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30.6 Solutions: Eulerian numbers |
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645 | (1) |
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30.7 Solutions: Euler numbers |
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646 | (1) |
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30.8 Solutions: Stirling numbers |
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647 | (4) |
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651 | (18) |
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31.1 Solutions: Properties of sets |
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651 | (9) |
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31.2 Solutions: Posets and lattices |
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660 | (2) |
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31.3 Solutions: Countable Zorn's lemma for measurable sets |
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662 | (1) |
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663 | (5) |
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31.5 Solutions: Ultrafilters |
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668 | (1) |
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32 Solutions: Logic and language |
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669 | (4) |
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32.1 Solutions: Sentential logic |
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669 | (2) |
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32.2 Solutions: Well-formed formulae |
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671 | (2) |
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673 | (28) |
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33.1 Solutions: Graph theory basics |
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673 | (5) |
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33.2 Solutions: Trees and forests |
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678 | (4) |
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33.3 Solutions: Connectivity, walks |
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682 | (2) |
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33.4 Solutions: Matchings |
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684 | (1) |
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33.5 Solutions: Stable matchings |
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685 | (1) |
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33.6 Solutions: Graph coloring |
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686 | (3) |
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33.7 Solutions: Planar graphs |
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689 | (2) |
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33.8 Solutions: Extremal graph theory |
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691 | (6) |
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33.9 Solutions: Digraphs and tournaments |
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697 | (3) |
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33.10 Solutions: Geometric graphs |
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700 | (1) |
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34 Solutions: Recursion and algorithms |
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701 | (16) |
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34.1 Solutions: Recursively defined sets |
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701 | (1) |
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34.2 Solutions: Recursively defined sequences |
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702 | (13) |
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34.2.1 Solutions: Linear homogeneous recurrences of order 2 |
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703 | (1) |
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34.2.2 Solutions: Applying the method of characteristic roots |
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703 | (3) |
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34.2.3 Solutions: Linear homogeneous recurrences of higher order |
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706 | (1) |
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34.2.4 Solutions: Non-homogeneous recurrences |
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707 | (2) |
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34.2.5 Solutions: Non-linear recurrences |
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709 | (5) |
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34.2.6 Solutions: Towers of Hanoi |
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714 | (1) |
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34.3 Solutions: Data structures |
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715 | (1) |
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34.4 Solutions: Complexity |
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716 | (1) |
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35 Solutions: Games and recreation |
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717 | (14) |
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35.1 Solutions: Tree games |
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717 | (5) |
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35.1.1 Solutions: The game of NIM |
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717 | (3) |
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720 | (2) |
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35.2 Solutions: Dominoes and trominoes |
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722 | (3) |
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35.2.1 Solutions: Muddy children |
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724 | (1) |
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35.2.2 Solutions: Colored hats |
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725 | (1) |
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35.3 Solutions: Detecting counterfeit coin |
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725 | (6) |
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36 Solutions: Relations and functions |
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731 | (14) |
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36.1 Solutions: Binary relations |
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731 | (1) |
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36.2 Solutions: Functions |
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731 | (14) |
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37 Solutions: Linear and abstract algebra |
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745 | (34) |
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37.1 Solutions: Linear algebra |
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745 | (23) |
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37.2 Solutions: Groups and permutations |
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768 | (2) |
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770 | (1) |
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771 | (2) |
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37.5 Solutions: Vector spaces |
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773 | (6) |
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779 | (16) |
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38.1 Solutions: Convexity |
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781 | (2) |
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783 | (5) |
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38.3 Solutions: Lines, planes, regions, and polyhedra |
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788 | (5) |
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38.4 Solutions: Finite geometries |
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793 | (2) |
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39 Solutions: Ramsey theory |
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795 | (8) |
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40 Solutions: Probability and statistics |
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803 | (12) |
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Appendix A ZFC axiom system |
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815 | (2) |
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Appendix B Inducing you to laugh? |
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817 | (4) |
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Appendix C The Greek alphabet |
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821 | (2) |
References |
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823 | (42) |
Name index |
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865 | (12) |
Subject index |
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877 | |