Bøker av Robin Wilson

Lewis Carroll's books have delighted children and adults for generations, but behind their exuberant fantasy and delightful nonsense was the mind of a brilliant mathematician. Now his forgotten achievements in the world of numbers are brought to light by acclaimed author and mathematician Robin Wilson. Here he explores the curious imagination of a man whose pioneering work at Oxford University included investigations into voting patterns and tennis seeding, who dreamt up numerical conundrums in bed at night and who filled his writings with problems, paradoxes, puzzles and teasing games of logic. Taking us into a world of mock turtles and maps, gryphons and gravity, Lewis Carroll in Numberland reveals the singular mind of a genius.

How a new mathematical field grew and matured in America Graph Theory in America focuses on the development of graph theory in North America from 1876 to 1976. At the beginning of this period, James Joseph Sylvester, perhaps the finest mathematician in the English-speaking world, took up his appointment as the first professor of mathematics at the Johns Hopkins University, where his inaugural lecture outlined connections between graph theory, algebra, and chemistry-shortly after, he introduced the word graph in our modern sense. A hundred years later, in 1976, graph theory witnessed the solution of the long-standing four color problem by Kenneth Appel and Wolfgang Haken of the University of Illinois.Tracing graph theory's trajectory across its first century, this book looks at influential figures in the field, both familiar and less known. Whereas many of the featured mathematicians spent their entire careers working on problems in graph theory, a few such as Hassler Whitney started there and then moved to work in other areas. Others, such as C. S. Peirce, Oswald Veblen, and George Birkhoff, made excursions into graph theory while continuing their focus elsewhere. Between the main chapters, the book provides short contextual interludes, describing how the American university system developed and how graph theory was progressing in Europe. Brief summaries of specific publications that influenced the subject's development are also included.Graph Theory in America tells how a remarkable area of mathematics landed on American soil, took root, and flourished.

Are you a man or woman who has been chosen by God andyet you find yourself rejected by man? God's message to youconcerning the wonderful things you will do for Him have neverbeen clearer, and yet it looks like the opportunity to fulfill that callis thousands of miles away. Experiences of rejection by man andisolation by God have left you wondering if you heard Him right.Sometimes God allows His chosen vessels to experience pain beforepromotion. Painful experiences associated with rejection, isolation,and what seems like endless waiting are not uncommon for theindividual set apart to do a mighty work for Him.

Make this year's Advent even more special than usual. Prepare your heart and life for the celebration of God's presence in this season of waiting with God Is With Us, a study of the lectionary Bible readings for Advent and Christmas. By following the lectionary, your study of the Bible and your prayers will be in tune with your pastor's sermon. You'll have a better understanding of the flow of the Scripture readings chosen for the season. Be ready to claim and celebrate the new hope we have in Jesus Christ!God Is With Us is based on the Revised Common Lectionary scriptures for church Year A, the first of a three-year cycle of Bible readings. The study includes commentary and reflection on readings from the Old Testament, the Epistles, and the Gospels. It offers the opportunity to explore these Bible readings in a five-session study.

A fully illustrated, accessible guide to the life and work of Isaac Newton, Britain's Greatest Scientist. Includes concise and easy-to-follow descriptions of Newton's work on gravity, motion, light, colour and calculus, as well as assessing his continuing legacy.

Presents a salutory warning to the international community against the fashionable but superficial view that there is an "Irish model" which can be exported to cauterise ethnic troubles around the globe. -- .

On October 23, 1852, Professor Augustus De Morgan wrote a letter to a colleague, unaware that he was launching one of the most famous mathematical conundrums in history--one that would confound thousands of puzzlers for more than a century. This is the amazing story of how the "e;map problem"e; was solved. The problem posed in the letter came from a former student: What is the least possible number of colors needed to fill in any map (real or invented) so that neighboring counties are always colored differently? This deceptively simple question was of minimal interest to cartographers, who saw little need to limit how many colors they used. But the problem set off a frenzy among professional mathematicians and amateur problem solvers, among them Lewis Carroll, an astronomer, a botanist, an obsessive golfer, the Bishop of London, a man who set his watch only once a year, a California traffic cop, and a bridegroom who spent his honeymoon coloring maps. In their pursuit of the solution, mathematicians painted maps on doughnuts and horseshoes and played with patterned soccer balls and the great rhombicuboctahedron. It would be more than one hundred years (and countless colored maps) later before the result was finally established. Even then, difficult questions remained, and the intricate solution--which involved no fewer than 1,200 hours of computer time--was greeted with as much dismay as enthusiasm. Providing a clear and elegant explanation of the problem and the proof, Robin Wilson tells how a seemingly innocuous question baffled great minds and stimulated exciting mathematics with far-flung applications. This is the entertaining story of those who failed to prove, and those who ultimately did prove, that four colors do indeed suffice to color any map. This new edition features many color illustrations. It also includes a new foreword by Ian Stewart on the importance of the map problem and how it was solved.