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Mathematical Muffin Morsels: Nobody Wants A Small Piece [Pehme köide]

(Univ Of Maryland, Usa), (Univ Of Maryland, Usa), (Univ Of Maryland, Usa), (Univ Of Maryland, Usa)
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Suppose you have five muffins that you want to divide and give to Alice, Bob, and Carol. You want each of them to get 5/3. You could cut each muffin into 1/3-1/3-1/3 and give each student five 1/3-sized pieces. But Alice objects! She has large hands! She wants everyone to have pieces larger than 1/3. Is there a way to divide five muffins for three students so that everyone gets 5/3, and all pieces are larger than 1/3? Spoiler alert: Yes! In fact, there is a division where the smallest piece is 5/12. Is there a better division? Spoiler alert: No. In this book we consider THE MUFFIN PROBLEM: what is the best way to divide up m muffins for s students so that everyone gets m/s muffins, with the smallest pieces maximized. We look at both procedures for the problem and proofs that these procedures are optimal. This problem takes us through much mathematics of interest, for example, combinatorics and optimization theory. However, the math is elementary enough for an advanced high school student.



"Suppose you have five muffins that you want to divide and give to Alice, Bob, and Carol. You want each of them to get 5/3. You could cut each muffin into 1/3-1/3-1/3 and give each student five 1/3-sized pieces. But Alice objects! She has large hands! She wants everyone to have pieces larger than 1/3. Is there a way to divide five muffins for three students so that everyone gets 5/3, and all pieces are larger than 1/3? Spoiler alert: Yes! In fact, there is a division where the smallest piece is 5/12. Is there a better division? Spoiler alert: No. In this book we consider THE MUFFIN PROBLEM: what is the best way to divide up m muffins for students so that everyone gets m/s muffins, with the smallest pieces maximized. We look at both procedures for the problem and proofs that these procedures are optimal. This problem takes us through much mathematics of interest, for example, combinatorics and optimization theory. However, the math is elementary enough for an advanced high school student"--
Preface v
About the Authors ix
Acknowledgments xiii
1 Five Muffins, Three Students; Three Muffins, Five Students
1(10)
2 One Student! Two Students! Some Basic Theorems!
11(6)
3 Our Plan
17(2)
4 Three Students! Four Students! The Floor-Ceiling Theorem!
19(8)
5 Finding Procedures
27(18)
6 The Half Method
45(22)
7 A Formula for f(m, 5)
67(8)
8 The Interval Method
75(10)
9 The Midpoint Method
85(12)
10 The Easy Buddy-Match Method
97(18)
11 The Hard Buddy-Match Method
115(24)
12 The Gap and Train Methods
139(16)
13 Scott Huddleston's Method
155(26)
Appendix A Math Notation 181(12)
Appendix B Fair Division 193(2)
Appendix C F (m, s) Exists! f (m, s) is Rational! f (m, s) is Computable! 195(12)
References 207(2)
Index 209