“Mr. Petit is the perfect teacher” in this fascinating, educational volume on knot-tying—an art and science that has held civilization together (The Wall Street Journal). Philippe Petit is known for his astounding feat of daring when, on August 7, 1974, he stepped out on a wire illegally rigged between the World Trade Center’s twin towers in New York City. But beyond his balance, courage, and showmanship, there was one thing Petit had to be absolutely certain of—his knots. Without the confidence that his knots would hold, he never would have left the ground. In fact, while most of us don’t think about them beyond tying our shoelaces, the humble knot is crucial in countless contexts, from sailing to sports to industrial safety to art, agriculture, and more. In this truly unique book, Petit offers a guide to tying over sixty of his essential knots, with practical sketches illustrating his methods and clear tying instructions. Filled with photos in which special knots were used during spectacular high-wire walks, quirky knot trivia, personal anecdotes, helpful tips, magic tricks, and special tying challenges, Why Knot? will entertain and educate readers of all ages. “In reading Philippe’s book we are cogently reminded that without the ability to secure a rope, or tether a goat, or make fast the sheets of a galley, much of the civilization that we take for granted would disappear as easily as a slipknot in the hands of a Vegas conjuror.” —Sting, musician and activist “His descriptions are clear, he deploys humor frequently and he makes his points with anecdotes that are colorful and memorable. Explaining the purpose and creation of knots and thanks to those flawless drawings Mr. Petit earns perfect marks.” —The Wall Street Journal

Knots are familiar objects. Yet the mathematical theory of knots quickly leads to deep results in topology and geometry. This work offers an introduction to this theory, starting with our understanding of knots. It presents the applications of knot theory to modern chemistry, biology and physics.

Colin Adams, well-known for his advanced research in topology and knot theory, is the author of this exciting new book that brings his findings and his passion for the subject to a more general audience. This beautifully illustrated comic book is appropriate for many mathematics courses at the undergraduate level such as liberal arts math, and topology. Additionally, the book could easily challenge high school students in math clubs or honors math courses and is perfect for the lay math enthusiast. Each copy of Why Knot? is packaged with a plastic manipulative called the Tangle R. Adams uses the Tangle because "you can open it up, tie it in a knot and then close it up again." The Tangle is the ultimate tool for knot theory because knots are defined in mathematics as being closed on a loop. Readers use the Tangle to complete the experiments throughout the brief volume. Adams also presents a illustrative and engaging history of knot theory from its early role in chemistry to modern applications such as DNA research, dynamical systems, and fluid mechanics. Real math, unreal fun!

This book offers a new, easily remembered system of knotting; examples of the most widely used knots are shown together with new knots for the same job, thus enabling the reader to develop an extensive repertoire of knots for a wide variety of practical purposes. t

"The Klamath Knot is a classic work of natural history, a wondrous meditation through time and space, and an intimate portrait of a miraculous stretch of land, forest, and mountain as botanically rich as any place in North America, as ecologically vital and important as any place on the planet."—Wade Davis, author of One River: Explorations and Discoveries in the Amazon Rain Forest "In Wallace's hands, evolution is never mechanical or abstract; it is always seen operating in particular sites and species. As a stylist and a thinker Wallace is in a select class of writers who make science into literature."—Ernest Callenbach, author of Ecotopia "For those of us who like David Rains Wallace's writing, it is good news indeed that his much-admired The Klamath Knot is back in print."—Sue Hubbell, author of Waiting for Aphrodite: Journeys into the Time Before Bones "A classic of natural history which will take its place alongside Walden and A Sand County Almanac."—G. Ledyard Stebbins, author of Variation and Evolution in Plants "The Klamath Knot is a marvelous book, one of the finest nature essays I have read, beautifully written, full of stimulating ideas and insights."—George B. Schaller, author of The Last Panda

What exactly does it take to make marriage strong? Ron and Jody Zappia were on the brink of divorce. It was their first year of marriage and already things were falling apart. They desperately searched for anything that would help. And then, suddenly, everything changed. Today, the Zappias lead The Knot Marriage Conference where they present seven transformative principles that saved their marriage. The Marriage Knot teaches these same principles to new audiences. Full of wisdom, humor, and refreshing transparency, The Marriage Knot unpacks the choices successful couples make. Marriage, like a knot, has to be kept tight. Left to itself, it loosens over time and can completely unravel. This highly practical book focuses on the everyday decisions you can make to rejuvenate and restore your marriage. Delving into topics like communication, sex, conflict resolution, and more, it offers the tools you need for life-long marriage health. Whether you’re engaged, newlyweds, or seasoned marriage veterans, this book will help make your marriage strong, no matter what pressures attempt to unravel it.

This exploration of combinatorics and knot theory is geared toward advanced undergraduates and graduate students. The author, Louis H. Kauffman, is a professor in the Department of Mathematics, Statistics, and Computer Science at the University of Illinois at Chicago. Kauffman draws upon his work as a topologist to illustrate the relationships between knot theory and statistical mechanics, quantum theory, and algebra, as well as the role of knot theory in combinatorics. Featured topics include state, trails, and the clock theorem; state polynomials and the duality conjecture; knots and links; axiomatic link calculations; spanning surfaces; the genus of alternative links; and ribbon knots and the Arf invariant. Key concepts are related in easy-to-remember terms, and numerous helpful diagrams appear throughout the text. The author has provided a new supplement, entitled "Remarks on Formal Knot Theory," as well as his article, "New Invariants in the Theory of Knots," first published in The American Mathematical Monthly, March 1988.