This book presents reverse mathematics to a general mathematical audience for the first time. Reverse mathematics is a new field that answers some old questions. In the two thousand years that mathematicians have been deriving theorems from axioms, it has often been asked: which axioms are needed to prove a given theorem? Only in the last two hundred years have...

Elements of Mathematics takes readers on a fascinating tour that begins in elementary mathematics—but, as John Stillwell shows, this subject is not as elementary or straightforward as one might think. Not all topics that are part of today's elementary mathematics were always considered as such, and great mathematical advances and discoveries had to occur in order for certain subjects to...

How the concept of proof has enabled the creation of mathematical knowledge. The Story of Proof investigates the evolution of the concept of proof—one of the most significant and defining features of mathematical thought—through critical episodes in its history. From the Pythagorean theorem to modern times, and across all major mathematical disciplines, John Stillwell demonstrates that proof is a mathematically...

The first book surveying the history and ideas behind reverse mathematics, Reverse Mathematics is a new field that seeks to find the axioms needed to prove given theorems. In Reverse Mathematics, John Stillwell offers a historical and representative view, emphasizing basic analysis and providing a novel approach to logic. By using a minimum of mathematical logic in a well-motivated way,...

Twelve years after they were exposed and discredited in the book Dirty Politics, some of the most cynical people in New Zealand politics are back. The epitome is Jordan Williams, with his abysmal attitudes to women, morality-free fundraising as a lobbyist for the tobacco industry and – worst and most destructive in New Zealand’s recent history – him and his...

Bring Christmas closer one day at a time with this show-stopping Wasgij Advent Calendar - Christmas TV Special! There are 24 doors to open, each with its own 54-piece puzzle inside. It’s the busiest time of the year for Santa, not only because of all the presents he needs to deliver, but also because of the countless movies and TV...

Fiddlies, 3D printed animals, to fiddle with! Price is for one Fiddlie Design is sent randomly

A BOLD AND BITING SATIRE. WILL HAVE YOU GASPING TO THE FINAL PAGE — Nita Prose WICKEDLY FUNNY, BEAUTIFULLY WRITTEN AND FRIGHTENINGLY PERCEPTIVE — Abigail Dean INVENTIVE, ADDICTIVE, A WILD RIDE — Ashley Audrain SHOT THROUGH WITH HUMOUR AND LACED WITH DARKNESS — Clare Mackintosh The Stepford Wives meets The Handmaid's Tale — Hannah Deitch My name was Natalie Heller...

Window Designer - Bring amazing spiral Spirograph designs to your windows and mirrors! New Window Designer Tool - Press and hold the Window Designer tool firmly against a surface, and the Cyclex wheel makes it simple to draw intricate spiral designs! Can be compatible with other wet-erase markers. Fun for Kids - This Spirograph set is perfect for kids ages...

THE INTERNATIONAL BESTSELLING PHENOMENON'For anything to be truly good, there must be love in it. Nothing is what it's supposed to be if love is not at the core.' One morning, a stranger arrives in the town of Golden. No one knows who he is or where he came from…His name is Theo and he's arrived there by chance –...

For real life - Bluey and her family have landed! This Bluey Tonie Set includes Bluey, Bingo, and Muffin, each packed with their very best adventures. From Grannies and Duck Cake disasters to Bin Night, Takeaway trouble, and full-on Muffin mayhem, there’s something for every kind of little listener. Expect big laughs, big feelings, and a few “trifficult” moments along...

Honour his legacy with the greatest gift of all—his story. The Official Hear Your Story Collection Your dad's story is more than just memories—it's a journey filled with wisdom, experiences, and defining moments that shaped his life. Dad, I Want to Hear Your Story is a guided journal that gives him the chance to share those stories in his own...