Spirals


Book Description

In this introduction to Spirals: From Theodorus to Chaos, Phil Davis writes, To me, mathematics has always been more than its form, or its content, its logic, its strategies, or its applications. Mathematics is one of the greatest of human intellectual experiences, and as such merits and requires a rather liberal approach. He takes just such an approach in this book inspired by the Hedrick Lectures of the seventy-fifth anniversary of the Mathematical Association of America. Although loosely organized around the study of a difference equation that Davis dubs Theodorus of Cyrene, the book takes us on an eclectic whirlwind tour of history, philosophy, anecdote and, of course, mathematics. Incorporating the old and the new, the proved and the conjectural, Davis examines Theodorus in light of the mathematical concerns that have grown and cha.




Spirals in Time


Book Description

The beautifully written story of shells and their makers, and our relationships with them. Seashells are the sculpted homes of a remarkable group of animals: the molluscs. These are some of the most ancient and successful animals on the planet. But watch out. Some molluscs can kill you if you eat them. Some will kill you if you stand too close. That hasn't stopped people using shells in many ways over thousands of years. They became the first jewelry and oldest currencies; they've been used as potent symbols of sex and death, prestige and war, not to mention a nutritious (and tasty) source of food. Spirals in Time is an exuberant aquatic romp, revealing amazing tales of these undersea marvels. Helen Scales leads us on a journey into their realm, as she goes in search of everything from snails that 'fly' underwater on tiny wings to octopuses accused of stealing shells and giant mussels with golden beards that were supposedly the source of Jason's golden fleece, and learns how shells have been exchanged for human lives, tapped for mind-bending drugs and inspired advances in medical technology. Weaving through these stories are the remarkable animals that build them, creatures with fascinating tales to tell, a myriad of spiralling shells following just a few simple rules of mathematics and evolution. Shells are also bellwethers of our impact on the natural world. Some species have been overfished, others poisoned by polluted seas; perhaps most worryingly of all, molluscs are expected to fall victim to ocean acidification, a side-effect of climate change that may soon cause shells to simply melt away. But rather than dwelling on what we risk losing, Spirals in Time urges you to ponder how seashells can reconnect us with nature, and heal the rift between ourselves and the living world.




Blockhead


Book Description

A biography of Leonardo Fibonacci, the 12th century mathematician who discovered the numerical sequence named for him.




Kali Natha Yoga


Book Description

the ancient art of balancing power and love through the practice of yoga, meditation and breath




Trick of the Light


Book Description

The old saying goes: 'A problem shared is a problem halved'. But what if your problem is secret? Erica, newly widowed, is devastated to discover her venture capitalist husband left their finances in ruins. Determined to save her home while protecting her teenage daughters, she vows to get back on her feet without letting them, or anyone else, know the truth. When her girls head off on a long-planned overseas adventure, Erica focuses on her much-loved job behind a makeup counter to keep her emotionally and financially afloat - although she is troubled by a peculiar encounter at work. Then she loses her job, the darkness beckons and Erica's life spirals downwards, further disturbed by strange occurrences in her house. Missing objects. Stopped clocks. Noises in the night. Should she doubt her very sanity? Can she swallow her pride and make herself reach out to her friends in time? Does she have a choice? A moving story of loss, change and self-discovery from Australia's master storyteller.




Spiral to the Sun


Book Description




Spirals


Book Description

Spirals occur all around us and in an astounding variety. They are found as close as our own biology in the twisting of our DNA, in the construction and furnishing of our homes, in the machinery of agriculture and of heavy industry, in the oceans and forests and even in the far reaches of space.Spirals are amazingly ubiquitous.In this exploration you are invited to learn all about spirals.







Spirals


Book Description

In this elegantly written and beautifully illustrated book, Nico Israel reveals how spirals are at the heart of the most significant literature and visual art of the twentieth century. Juxtaposing the work of writers and artists—including W. B. Yeats and Vladimir Tatlin, James Joyce and Marcel Duchamp, and Samuel Beckett and Robert Smithson—he argues that spirals provide a crucial frame for understanding the mutual involvement of modernity, history, and geopolitics, complicating the spatio-temporal logic of literary and artistic genres and of scholarly disciplines. The book takes the spiral not only as its topic but as its method. Drawing on the writings of Walter Benjamin and Alain Badiou, Israel theorizes a way of reading spirals, responding to their dual-directionality as well as their affective power. The sensations associated with spirals––flying, falling, drowning, being smothered—reflect the anxieties of limits tested or breached, and Israel charts these limits as they widen from the local to the global and recoil back. Chapters mix literary and art history to explore 'pataphysics, Futurism, Vorticism, Dada and Surrealism, "Concentrisme," minimalism, and entropic earth art; a coda considers the work of novelist W. G. Sebald and contemporary artist William Kentridge. In Spirals, Israel offers a refreshingly original approach to the history of modernism and its aftermaths, one that gives modernist studies, comparative literature, and art criticism an important new spin.