domingo, 11 de maio de 2014

A-B-A-B-A- A Book of Pattern Play


Brian P. Cleary e Brian Gable

(Math Is Categorical)

Millbrook Press | 2012 | 36 páginas | rar - pdf | 5,2 Mb

link (password : matav)

A-B-A-B-A- A Book of Pattern Play In this playful look at patterns, Brian P. Cleary and Brian Gable provide many examples of repeating sequences of shapes, colors, objects, and more. The comical cats of the wildly popular Words Are CATegorical series show how patterns can be found all around us. Peppy rhymes, goofy illustrations, and kid-friendly examples make pattern practice fun!

Mathematical Gems III

Ross Hosnberger

Mathematical Association of America (MAA) | The Dolciani Mathematical Expositions Vol. 9 | 1985 | 250 páginas | DjVu | 2 MB

Link

Ross Honsberger is the author of six books published in the Dolciani Mathematical Expositions Series, each of which presents problems from algebra, arithmetic, number theory, probability, and geometry, and provides us with an ingenious solution to those problems. His most recent addition to the Dolciani series is: "More Mathematical Morsels" which is a continuation of the earlier "Mathematical Morsels" volume published in 1979. The problems presented here are meant to be enjoyed, rather than instruct, although instruction is almost always the automatic by-product. All of the problems in this collection are concerned only with elementary problems, but each of them contains something exciting - a surprising result, an intriguing approach, a stroke of ingenuity.

 CONTENTS
CHAPTER PAGE
1. Gleanings from Combinatorics 1
2. Gleanings from Geometry 18
3. Two Problems in Combinatorial Geometry 36
4. Sheep Fleecing with Walter Funkenbusch 48
5. Two Problems in Graph Theory 56
6. Two Applications of Generating Functions 64
7. Some Problems from the Olympiads 76
8. A Second Look at the Fibonacci and Lucas Numbers 102
9. Some Problems in Combinatorics 139
10. Four Clever Schemes in Cryptography 151
11. Gleanings from Number Theory 174
12. Schur's Theorem; An Application of Ramsey's Theorem 183
13. Two Applications of Helly's Theorem 186
14. An Introduction to Ramanujan's Highly Composite Numbers 193
15. On Sets of Points in the Plane 201
16. Two Surprises from Algebra 208
17. A Problem of Paul Erdos 215
18. Cai Mao-Cheng's Solution to Katona's Problem
on Families of Separating Subsets 224
Solutions to Selected Exercises 241
Glossary 247
Index 249

Mathematical Gems II

Ross Honsberger

Mathematical Association of America (MAA) | The Dolciani Mathematical Expositions Vol. 2 | 1976 | 182 páginas | DjVu | 1 MB

Link

CONTENTS
CHAPTER PAGE
1. Three Surprises from Combinatorics and
Number Theory 1
2. Four Minor Gems from Geometry 10
3. A Problem in Checker-Jumping 23
4. The Generation of Prime Numbers 29
5. Two Combinatorial Proofs 38
6. Bicentric Polygons, Steiner Chains, and the
Hexlet 46
7. A Theorem of Gabriel Lame 54
8. Box-packing Problems 58
9. A Theorem of Bang and the Isosceles
Tetrahedron 90
10. An Intriguing Series 98
11. Chvatal's Art Gallery Theorem 104
12. The Set of Distances Determined by n Points in
the Plane Ill
13. A Putnam Paper Problem 136
14. Lovasz* Proof of a Theorem of Tutte 147
Solutions to the Exercises 158
Index 181


Mathematical Gems

Ross Honsberger

Mathematical Association of America (MAA) | The Dolciani Mathematical Expositions Vol. 1 | 1973 | 176 páginas | DjVu | 2 MB

Link

CONTENTS
CHAPTER PAGE
1. An Old Chinese Theorem and Pierre De Fermat 1
2. Louis Pdsa 10
3. Equilateral Triangles 22
4. The Orchard Problem 43
6. A-Curves 64
6. It's Combinatorics that Counts 1 64
7. The Kozyrev-Grinberg Theory of Hamiltonian Circuits 79
8. Morley's Theorem 92
9. A Problem in Combinatorics 99
10. Multiply-Perfect, Superabundant, and Practical Numbers 108
11. Circles, Squares, and Lattice Points 117
12. Recursion 128
13. Poulet, Super-Poulet, and Related Numbers 137
Solutions to Selected Exercises 144
Index .... 176