The (Fabulous) Fibonacci Numbers

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New Book: The (Fabulous) Fibonacci Numbers

The most ubiquitous, and perhaps the most intriguing, number pattern in mathematics is the Fibonacci sequence. In this simple pattern beginning with two ones, each succeeding number is the sum of the two numbers immediately preceding it (1, 1, 2, 3, 5, 8, 13, 21, ad infinitum). Far from being just a curiosity, this sequence recurs in structures found throughout nature–from the arrangement of whorls on a pinecone to the branches of certain plant stems. All of which is astounding evidence for the deep mathematical basis of the natural world.

With admirable clarity, math educators Alfred Posamentier and Ingmar Lehmann take us on a fascinating tour of the many ramifications of the Fibonacci numbers. The authors begin with a brief history of their distinguished Italian discoverer, who, among other accomplishments, was responsible for popularizing the use of Arabic numerals in the West. Turning to botany, the authors demonstrate, through illustrative diagrams, the unbelievable connections between Fibonacci numbers and natural forms (pineapples, sunflowers, and daisies are just a few examples). In art, architecture, the stock market, and other areas of society and culture, they point out numerous examples of the Fibonacci sequence as well as its derivative, the “golden ratio.” And of course in mathematics, as the authors amply demonstrate, there are almost boundless applications in probability, number theory, geometry, algebra, and Pascal’s triangle, to name a few. Accessible and appealing to even the most math-phobic individual, this fun and enlightening book allows the reader to appreciate the elegance of mathematics and its amazing applications in both natural and cultural settings.

Sounds good… I put a hold on the book at my local library…

Linux In Paradise

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Linux In Paradise

New Caledonia is a French overseas territory in the South Pacific, about 1,500 km east of Australia. Like most of the islands in the region, it is not wired by an undersea telecommunications cable; instead, all of its Internet traffic comes courtesy of a satellite. Although ADSL Internet has been widely available in Nouméa, the capital city, for some time, due to the limits of a satellite connection and growing user demand, connections to the World Wide Web are often slow and unreliable. New Caledonia, despite being one of the most prosperous territories in the South Pacific, is a place where Linux magazines with cover CDs containing Linux distributions are still in high demand.

Ubuntu Live

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Ubuntu Live: Mark Shuttleworth’s keynote

Beyond Fear

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At 3,106 carats, a little under a pound and a half, the Cullinan Diamond was the largest uncut diamond ever discovered. It was extracted from the earth at the Premier Mine, near Pretoria, South Africa, in 1905. Appreciating the literal enormity of the find, the Transvaal government bought the diamond as a gift for King Edward VII. Transporting the stone to England was a huge security problem, of course, and there was much debate on how best to do it. Detectives were sent from London to guard it on its journey. News leaked that a certain steamer was carrying it, and the presence of the detectives confirmed this. But the diamond on that steamer was a fake. Only a few people knew of the real plan; they packed the Cullinan in a small box, stuck a three-shilling stamp on it, and sent it to England anonymously by unregistered parcel post.

Beyond Fear, pp 211-212, Bruce Schneier (via Schneier on Security)

[Listen/Download MP3] Unlimited Four

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Unlimited Four - Slow Down from the Chanson 45 (via Flea Market Funk)