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Combinatorial Reasoning
An Introduction to the Art of Counting
Duane DeTemple (Author), William Webb (Author)
9781118652183, Wiley
Hardback, published 25 April 2014
496 pages
24.3 x 16.1 x 3.2 cm, 0.798 kg
Written by two well-known scholars in the field, Combinatorial Reasoning: An Introduction to the Art of Counting presents a clear and comprehensive introduction to the concepts and methodology of beginning combinatorics. Focusing on modern techniques and applications, the book develops a variety of effective approaches to solving counting problems. Balancing abstract ideas with specific topical coverage, the book utilizes real world examples with problems ranging from basic calculations that are designed to develop fundamental concepts to more challenging exercises that allow for a deeper exploration of complex combinatorial situations. Simple cases are treated first before moving on to general and more advanced cases. Additional features of the book include: • Approximately 700 carefully structured problems designed for readers at multiple levels, many with hints and/or short answers Combinatorial Reasoning: An Introduction to the Art of Counting is an excellent textbook for upper-undergraduate and beginning graduate-level courses on introductory combinatorics and discrete mathematics.
• Numerous examples that illustrate problem solving using both combinatorial reasoning and sophisticated algorithmic methods
• A novel approach to the study of recurrence sequences, which simplifies many proofs and calculations
• Concrete examples and diagrams interspersed throughout to further aid comprehension of abstract concepts
• A chapter-by-chapter review to clarify the most crucial concepts covered
Preface ix Part I The Basics of Enumerative Combinatorics 1 Initial EnCOUNTers with Combinatorial Reasoning 3 1.1 Introduction, 3 1.2 The Pigeonhole Principle, 3 1.3 Tiling Chessboards with Dominoes, 13 1.4 Figurate Numbers, 18 1.5 Counting Tilings of Rectangles, 24 1.6 Addition and Multiplication Principles, 33 1.7 Summary and Additional Problems, 46 References, 50 2 Selections, Arrangements, and Distributions 51 2.1 Introduction, 51 2.2 Permutations and Combinations, 52 2.3 Combinatorial Models, 64 2.4 Permutations and Combinations with Repetitions, 77 2.5 Distributions to Distinct Recipients, 86 2.6 Circular Permutations and Derangements, 100 2.7 Summary and Additional Problems, 109 Reference, 112 3 Binomial Series and Generating Functions 113 3.1 Introduction, 113 3.2 The Binomial and Multinomial Theorems, 114 3.3 Newton’s Binomial Series, 122 3.4 Ordinary Generating Functions, 131 3.5 Exponential Generating Functions, 147 3.6 Summary and Additional Problems, 163 References, 166 4 Alternating Sums, Inclusion-Exclusion Principle, Rook Polynomials, and Fibonacci Nim 167 4.1 Introduction, 167 4.2 Evaluating Alternating Sums with the DIE Method, 168 4.3 The Principle of Inclusion–Exclusion (PIE), 179 4.4 Rook Polynomials, 191 4.5 (Optional) Zeckendorf Representations and Fibonacci Nim, 202 4.6 Summary and Additional Problems, 207 References, 210 5 Recurrence Relations 211 5.1 Introduction, 211 5.2 The Fibonacci Recurrence Relation, 212 5.3 Second-Order Recurrence Relations, 222 5.4 Higher-Order Linear Homogeneous Recurrence Relations, 233 5.5 Nonhomogeneous Recurrence Relations, 247 5.6 Recurrence Relations and Generating Functions, 257 5.7 Summary and Additional Problems, 268 References, 273 6 Special Numbers 275 6.1 Introduction, 275 6.2 Stirling Numbers, 275 6.3 Harmonic Numbers, 296 6.4 Bernoulli Numbers, 306 6.5 Eulerian Numbers, 315 6.6 Partition Numbers, 323 6.7 Catalan Numbers, 335 6.8 Summary and Additional Problems, 345 References, 352 Part II Two Additional Topics in Enumeration 7 Linear Spaces and Recurrence Sequences 355 7.1 Introduction, 355 7.2 Vector Spaces of Sequences, 356 7.3 Nonhomogeneous Recurrences and Systems of Recurrences, 367 7.4 Identities for Recurrence Sequences, 378 7.5 Summary and Additional Problems, 390 8 Counting with Symmetries 393 8.1 Introduction, 393 8.2 Algebraic Discoveries, 394 8.3 Burnside’s Lemma, 407 8.4 The Cycle Index and Pólya’s Method of Enumeration, 417 8.5 Summary and Additional Problems, 430 References, 432 Part III Notations Index, Appendices, and Solutions to Selected Odd Problems Index of Notations 435 Appendix A Mathematical Induction 439 A.1 Principle of Mathematical Induction, 439 A.2 Principle of Strong Induction, 441 A.3 Well Ordering Principle, 442 Appendix B Searching the Online Encyclopedia of Integer Sequences (OEIS) 443 B. 1 Searching a Sequence, 443 B. 2 Searching an Array, 444 B. 3 Other Searches, 444 B. 4 Beginnings of OEIS, 444 Appendix C Generalized Vandermonde Determinants 445 Hints, Short Answers, and Complete Solutions to Selected Odd Problems 449 Index 467
Subject Areas: Mathematics [PB]
