Rövid leírás:

Written in a clear, easy-to-understand, and conversational style; and enhanced with challenges and tips to broaden your flexagon skills and spark creativity, this book is a must for flexagon enthusiasts, teachers, students, libraries, mathematicians and everyone who loves to solve a good puzzle.

Hosszú leírás:

The hexaflexagon is a folded paper strip of colored triangles that has long delighted people with how it ?magically? changes its appearance when ?flexed?. This hands-on, comprehensive book goes beyond the hexaflexagon, the standard version of this folded puzzle, exponentially expanding the barely explored field of flexagons as it brings new options and fresh insights to light.

? Learn over a dozen different flexes, and make dozens of different flexagons with the aid of step-by-step illustrated directions and templates to copy and print.

? Delve into the internal structure of flexagons and discover a universal way to describe and predict their behavior.

? Learn how to create your own custom flexagons with a special computer program.

? Understand how flexagons are connected to group theory, computer science, and topology.

? Have fun decorating flexagons and make flexagon books, puzzles, pop-ups, mazes, and more.

Written in a clear, easy-to-understand, and conversational style and enhanced with challenges and tips to broaden your flexagon skills and spark creativity, The Secret World of Flexagons: Fascinating Folded Paper Puzzles is a must for flexagon enthusiasts, teachers, students, libraries, mathematicians, and everyone who loves to solve a good puzzle.

?COMPREHENSIVE AND ACCESSIBLE...A MUST HAVE for anyone interested in flexagons. The authors combine scholarly analysis with infectious enthusiasm. Instructions are included for dozens of examples that are easy to make and fun to explore.?

?Paul Jackson, award-winning origami artist, paper engineer, teacher, and author

?HIGHLY RECOMMENDED! A lucid and comprehensive treatment of every aspect of flexagons. Beginners will find a gentle way into a fascinating subject, and experienced flexers will find themselves learning something new on nearly every page of this beautifully illustrated book.?

?Jason Rosenhouse, professor of mathematics, James Madison University, author of "Games for Your Mind: The History and Future of Logic Puzzles?

?Wow! The possibilities just keep going and going. I had no idea there was so much variety in flexagons! Quite an impressive book. This book goes into amazing depth in the incredible variety of flexagons. There?s something for everyone: if you just want to make cool gadgets, there?s clear instructions (and downloadable templates) for a wide variety of shapes, but for those who want to go deep, the mathematics of flexagons are also presented, rich and rewarding. Be forewarned, though: they?re addictive.?

?Robert J. Lang, physicist, virtuoso origami artist, and master of origami mathematics, theory, and real-world applications

Tartalomjegyzék:

Introduction

Part One: Symmetric Flexes
1: The Pinch Flex
2: General Tips
3: More Faces
4: Triangle Tetraflexagon and Octaflexagon
5: Different Triangles
6: Pinch Flex Variations
7: The Book Flex
8: The Box Flex

Part Two: Asymmetric Flexes
9: Flex Diagrams
10: The V-Flex
11: The Tuck Flex
12: The Flip Flex
13: The Pyramid Shuffle Flex
14: Breaking Down Flexes
15: Slot Flexes

Part Three: Learning about Flexagons
16: Flexagon Naming
17: State Diagrams
18: Flex Sequences
19: Pat Notation
20: Atomic Flex Theory
21: Defining Flexagon and Flex
22: Groups and Flexagons
23: Flexagon Computers
24: Conrad and Hartline?s Flexagon Theory
25: Les Pook?s Flexagon Theory
26: Topology
27: Templates and Labels

Part Four: Exploring Flexagons
28: Square Silver Octaflexagon
29: Hexagonal Bronze Dodecaflexagon
30: Hexagonal Silver Dodecaflexagon
31: Silver Bracelet
32: Octagonal Ring 14-flexagon
33: Flexagon Inspector

Part Five: Fun with Flexagons
34: Decorating Flexagons
35: Flexagon Books
36: Flexagon Puzzles and Mazes
37: Flexagon Pop-ups
38: Cutting Flexagons

Epilogue
Appendices
A: Definitions
B: Flexagon Charts
C: Flex Compendium
Bibliography