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Basic Material and Asymptotics |
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1 | (20) |
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1 | (1) |
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2 | (2) |
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4 | (1) |
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Concepts of Asymptotic Approximation |
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5 | (7) |
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Naive Formulation of Perturbation Problems |
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12 | (4) |
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Reformulation in the Standard Form |
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16 | (1) |
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The Standard Form in the Quasilinear Case |
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17 | (4) |
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Averaging: the Periodic Case |
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21 | (24) |
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21 | (1) |
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22 | (2) |
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A Linear Oscillator with Frequency Modulation |
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24 | (1) |
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One Degree of Freedom Hamiltonian System |
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25 | (1) |
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The Necessity of Restricting the Interval of Time |
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26 | (1) |
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Bounded Solutions and a Restricted Time Scale of Validity |
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27 | (1) |
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Counter Example of Crude Averaging |
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28 | (2) |
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Two Proofs of First-Order Periodic Averaging |
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30 | (7) |
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Higher-Order Periodic Averaging and Trade-Off |
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37 | (8) |
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Higher-Order Periodic Averaging |
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37 | (4) |
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Estimates on Longer Time Intervals |
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41 | (1) |
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Modified Van der Pol Equation |
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42 | (1) |
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Periodic Orbit of the Van der Pol Equation |
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43 | (2) |
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45 | (22) |
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45 | (1) |
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Handling the Averaging Process |
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45 | (7) |
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46 | (1) |
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Lie Theory for Autonomous Vector Fields |
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47 | (1) |
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Lie Theory for Periodic Vector Fields |
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48 | (2) |
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Solving the Averaged Equations |
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50 | (2) |
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Averaging Periodic Systems with Slow Time Dependence |
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52 | (4) |
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Pendulum with Slowly Varying Length |
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54 | (2) |
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56 | (4) |
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Averaging and Multiple Time Scale Methods |
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60 | (7) |
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Averaging: the General Case |
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67 | (22) |
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67 | (1) |
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Basic Lemmas; the Periodic Case |
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68 | (4) |
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72 | (3) |
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Linear Oscillator with Increasing Damping |
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75 | (2) |
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77 | (5) |
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Example of Second-Order Averaging |
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81 | (1) |
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Almost-Periodic Vector Fields |
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82 | (7) |
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84 | (5) |
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89 | (22) |
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89 | (1) |
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Equations with Linear Attraction |
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90 | (3) |
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Examples of Regular Perturbations with Attraction |
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93 | (3) |
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93 | (1) |
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94 | (2) |
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96 | (1) |
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Examples of Averaging with Attraction |
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96 | (4) |
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Anharmonic Oscillator with Linear Damping |
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97 | (1) |
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Duffing's Equation with Damping and Forcing |
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97 | (3) |
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Theory of Averaging with Attraction |
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100 | (3) |
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An Attractor in the Original Equation |
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103 | (1) |
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104 | (2) |
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106 | (1) |
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107 | (4) |
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Perturbation of the Linear Terms |
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108 | (1) |
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Damping on Various Time Scales |
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108 | (3) |
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Periodic Averaging and Hyperbolicity |
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111 | (30) |
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111 | (2) |
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Coupled Duffing Equations, An Example |
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113 | (3) |
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Rest Points and Periodic Solutions |
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116 | (3) |
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116 | (1) |
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117 | (2) |
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Local Conjugacy and Shadowing |
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119 | (9) |
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120 | (6) |
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126 | (2) |
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Extended Error Estimate for Solutions Approaching an Attractor |
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128 | (1) |
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Conjugacy and Shadowing in a Dumbbell-Shaped Neighborhood |
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129 | (6) |
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130 | (4) |
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134 | (1) |
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Extension to Larger Compact Sets |
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135 | (3) |
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Extensions and Degenerate Cases |
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138 | (3) |
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141 | (30) |
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141 | (1) |
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The Case of Constant Frequencies |
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141 | (5) |
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146 | (4) |
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The Case of Variable Frequencies |
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150 | (2) |
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152 | (4) |
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152 | (1) |
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153 | (1) |
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Oscillator Attached to a Flywheel |
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154 | (2) |
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Secondary (Not Second Order) Averaging |
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156 | (1) |
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157 | (2) |
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159 | (4) |
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163 | (1) |
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Higher Order Approximation in the Regular Case |
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163 | (3) |
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Generalization of the Regular Case |
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166 | (5) |
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Two-Body Problem with Variable Mass |
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169 | (2) |
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Passage Through Resonance |
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171 | (22) |
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171 | (1) |
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172 | (1) |
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173 | (1) |
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174 | (1) |
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Remarks on Higher-Dimensional Problems |
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175 | (4) |
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175 | (1) |
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The Case of More Than One Angle |
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175 | (1) |
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Example of Resonance Locking |
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176 | (2) |
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Example of Forced Passage through Resonance |
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178 | (1) |
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Inner and Outer Expansion |
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179 | (9) |
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188 | (5) |
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The Forced Mathematical Pendulum |
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188 | (2) |
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An Oscillator Attached to a Fly-Wheel |
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190 | (3) |
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From Averaging to Normal Forms |
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193 | (12) |
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Classical, or First-Level, Normal Forms |
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193 | (9) |
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Differential Operators Associated with a Vector Field |
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194 | (2) |
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196 | (1) |
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197 | (1) |
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198 | (1) |
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199 | (1) |
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The Transpose or Inner Product Normal Form Style |
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200 | (1) |
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201 | (1) |
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Higher Level Normal Forms |
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202 | (3) |
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Hamiltonian Normal Form Theory |
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205 | (58) |
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205 | (5) |
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The Hamiltonian Formalism |
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205 | (2) |
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Local Expansions and Rescaling |
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207 | (1) |
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Basic Ingredients of the Flow |
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207 | (3) |
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Normalization of Hamiltonians around Equilibria |
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210 | (4) |
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210 | (3) |
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213 | (1) |
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Canonical Variables at Resonance |
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214 | (1) |
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Periodic Solutions and Integrals |
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215 | (1) |
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Two Degrees of Freedom, General Theory |
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216 | (7) |
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216 | (2) |
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218 | (2) |
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Description of the ω1 : ω2-Resonance in Normal Form |
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220 | (1) |
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General Aspects of the k : l-Resonance, k ≠ l |
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221 | (2) |
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Two Degrees of Freedom, Examples |
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223 | (15) |
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223 | (4) |
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The Symmetric 1 : 1-Resonance |
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227 | (2) |
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229 | (4) |
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233 | (5) |
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Three Degrees of Freedom, General Theory |
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238 | (11) |
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238 | (1) |
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239 | (2) |
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Periodic Orbits and Integrals |
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241 | (2) |
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The ω1 : ω2 : ω3-Resonance |
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243 | (1) |
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243 | (6) |
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Three Degrees of Freedom, Examples |
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249 | (14) |
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249 | (1) |
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Integrability of the 1 : 2 : 1 Normal Form |
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250 | (2) |
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252 | (1) |
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Integrability of the 1 : 2 : 2 Normal Form |
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253 | (1) |
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254 | (1) |
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Integrability of the 1 : 2 : 3 Normal Form |
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255 | (2) |
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257 | (1) |
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Integrability of the 1 : 2 : 4 Normal Form |
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258 | (1) |
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Summary of Integrability of Normalized Systems |
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259 | (1) |
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Genuine Second-Order Resonances |
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260 | (3) |
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Classical (First--Level) Normal Form Theory |
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263 | (22) |
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263 | (1) |
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Leibniz Algebras and Representations |
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264 | (3) |
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267 | (2) |
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269 | (5) |
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Example: Nilpotent Linear Part in R2 |
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272 | (2) |
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274 | (7) |
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276 | (2) |
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Nilpotent Example Revisited |
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278 | (1) |
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279 | (2) |
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The Form of the Normal Form, the Description Problem |
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281 | (4) |
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Nilpotent (Classical) Normal Form |
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285 | (30) |
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285 | (1) |
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Classical Invariant Theory |
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285 | (1) |
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286 | (4) |
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A Remark on Generating Functions |
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290 | (3) |
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The Jacobson--Morozov Lemma |
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293 | (1) |
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Description of the First Level Normal Forms |
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294 | (16) |
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294 | (3) |
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297 | (1) |
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298 | (4) |
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302 | (1) |
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303 | (3) |
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306 | (1) |
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307 | (3) |
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Description of the First Level Normal Forms |
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310 | (5) |
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310 | (1) |
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311 | (1) |
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312 | (2) |
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314 | (1) |
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Higher--Level Normal Form Theory |
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315 | (22) |
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315 | (2) |
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316 | (1) |
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Abstract Formulation of Normal Form Theory |
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317 | (3) |
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The Hilbert--Poincare Series of a Spectral Sequence |
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320 | (1) |
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The Anharmonic Oscillator |
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321 | (5) |
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Case Ar : β0/2r Is Invertible |
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323 | (1) |
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Case Ar: β0/2r Is Not Invertible, but β1/2r Is |
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323 | (3) |
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326 | (1) |
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The Hamiltonian 1 : 2-Resonance |
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326 | (2) |
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328 | (1) |
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Definition of Normal Form |
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329 | (1) |
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Linear Convergence, Using the Newton Method |
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330 | (4) |
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Quadratic Convergence, Using the Dynkin Formula |
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334 | (3) |
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A. The History of the Theory of Averaging |
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337 | (8) |
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Early Calculations and Ideas |
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337 | (3) |
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Formal Perturbation Theory and Averaging |
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340 | (3) |
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340 | (1) |
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341 | (1) |
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342 | (1) |
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Proofs of Asymptotic Validity |
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343 | (2) |
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B. A 4-Dimensional Example of Hopf Bifurcation |
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345 | (8) |
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345 | (1) |
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346 | (1) |
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347 | (1) |
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Linear Perturbation Theory |
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348 | (2) |
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350 | (3) |
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C. Invariant Manifolds by Averaging |
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353 | (10) |
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353 | (1) |
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Deforming a Normally Hyperbolic Manifold |
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354 | (2) |
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Tori by Bogoliubov-Mitropolsky-Hale Continuation |
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356 | (1) |
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The Case of Parallel Flow |
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357 | (3) |
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Tori Created by Neimark--Sacker Bifurcation |
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360 | (3) |
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363 | (14) |
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363 | (1) |
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The Unperturbed Kepler Problem |
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364 | (1) |
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365 | (1) |
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Motion Around an `Oblate Planet' |
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366 | (1) |
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Harmonic Oscillator Formulation |
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367 | (1) |
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368 | (3) |
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A Dissipative Force: Atmospheric Drag |
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371 | (2) |
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Systems with Mass Loss or Variable G |
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373 | (3) |
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Two--body System with Increasing Mass |
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376 | (1) |
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E. On Averaging Methods for Partial Differential Equations |
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377 | (18) |
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377 | (1) |
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378 | (5) |
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Averaging in a Banach Space |
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378 | (1) |
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Averaging a Time-Dependent Operator |
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379 | (2) |
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A Time-Periodic Advection-Diffusion Problem |
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381 | (1) |
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Nonlinearities, Boundary Conditions and Sources |
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382 | (1) |
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Hyperbolic Operators with a Discrete Spectrum |
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383 | (11) |
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Averaging Results by Buitelaar |
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384 | (2) |
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Galerkin Averaging Results |
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386 | (3) |
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Example: the Cubic Klein--Gordon Equation |
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389 | (2) |
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Example: Wave Equation with Many Resonances |
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391 | (1) |
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Example: the Keller--Kogelman Problem |
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392 | (2) |
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394 | (1) |
References |
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395 | (18) |
Index of Definitions & Descriptions |
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413 | (4) |
General Index |
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417 | |