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Specific Numbers: Some say that numbers aren't as important as actual functions - but we say they are! :-) For anyone who has wondered why 13 is unlucky - why you can't eat pi - or why 1 is the multiplicative identity - this is the section you've been searching for since grade school. Whatever intellectual curiosity has been nagging at you since you first wrote the number 5 - you will be likely to find an answer to your question here. And if not - submit your own! Also: Definitions of important constants - formulas to compute them and formulas that use them. Math Recreations Specific Numbers:
 Perfect Numbers: Numbers Prime Numbers: Numbers Pseudorandom Numbers: Numbers English Kids and Teens School Time Math: Counting and Numbers English Computers Computer Science Distributed Computing Projects: Cryptography English Science Math: Number Theory Golden Ratio and Fibonacci NumbersScience: Golden, Recreations Specific Numbers Provides information about the golden ratio and Fibonacci numbers Ratio and Fibonacci Numbers and how they relate to biology, art, and ancient Egyptian art. Harry J. Smith's Fun With MathematicsScience: Harry, Recreations Specific Numbers Fun math stuff J. Smith's Fun With Mathematics including computing pi, perfect numbers, Fibonacci numbers, the tesseract, a look into 4-dimensional space. Catalan Number -- MathWorldScience: Catalan, Recreations Specific Numbers Illustration of the Catalan numbers related to Euler's polygon division problem Number MathWorld . Fibonacci Numbers and The Golden Ratio Link Web PageScience: Fibonacci, Recreations Specific Numbers A long list of links to pages about Fibonacci and his numbers Numbers and The Golden Ratio Link Web Page the golden ratio and applications in art and science. Verbose.net - Specific NumbersScience: Verbose, Recreations Specific Numbers Dedicated to the natural order of the universe and to the irrational and logical chaos it presents Specific Numbers . Feigenbaum ConstantsScience: Feigenbaum, Recreations Specific Numbers Describes the constants and their mathematical basis Constants . RJN's More Digits of Irrational Numbers - Specific NumbersScience: RJN's, Recreations Specific Numbers Several million digits of e More Digits of Irrational Numbers Specific Numbers and the square roots of 2, 3, 5, 6, 7, 8, and 10. Apéry's ConstantScience: Apéry's, Recreations Specific Numbers Describes the definition of the constant and some interpretations as well as a list of references to further work about the constant Constant . Friedmann's S-NumbersScience: Friedmann's, Recreations Specific Numbers These are numbers where an expression can be given using the operations of addition and squaring SNumbers using the digits of a number in order, which gives the original number. Algorithms, theorems and results. Jewish Encyclopedia: Numbers and Numerals - Specific NumbersScience: Jewish, Recreations Specific Numbers Discusses the uses and symbolism of various numbers in Hebrew literature Encyclopedia: Numbers and Numerals Specific Numbers . Brun's Constant - Specific NumbersScience: Brun's, Recreations Specific Numbers Description of the constant Constant Specific Numbers some related work and links to some further reading. Numbers, Constants and Computation - Specific NumbersScience: Numbers, Recreations Specific Numbers Mathematical Constants and Computation Specific Numbers historical and algorithmic aspects of some classical mathematical constants. Stewy's SiteScience: Stewy's, Recreations Specific Numbers The infinitesimal is the opposite of infinity Site and mathematicians still argue over its existence. This page probes into one of the weirdest numbers in mathematics. Vampire NumbersScience: Vampire, Recreations Specific Numbers Numbers with a factorization containing the same digits Numbers e.g. 1530 = 30*51. FAQ on Special NumbersScience: FAQ on, Recreations Specific Numbers Answers to Frequently asked questions about special numbers Special Numbers . Zero - Specific NumbersScience: Zero, Recreations Specific Numbers · A history of Zero that describes the introduction of zero and the main persons that brought advantages to it Specific Numbers . A Rigorous Treatment of Division by Zero - Specific NumbersScience: A Rigorous, Recreations Specific Numbers · By considering a new notion of division Treatment of Division by Zero Specific Numbers one can allow division by zero, but the algebraic rules have to be modified. The Riesel Sieve ProjectScience: The Riesel, Recreations Specific Numbers · Distributed project to help solve the Riesel problem through the use of donated unused CPU cycles Sieve Project . Generalized Fermat Primes Search - Specific NumbersScience: Generalized, Recreations Specific Numbers · Project provides software to search for primes of a specific form Fermat Primes Search Specific Numbers Coordinated via email. Some History Surrounding eScience: Some, Recreations Specific Numbers · Subject: Re: How did we come by e? From: Matthew P Wiener Date: 1998/08/12 Newsgroups: sci History Surrounding e math. Hunting e - Specific NumbersScience: Hunting, Recreations Specific Numbers · Ivars Peterson's MathTrek e Specific Numbers describing the constant e. Fibonacci Facts - Specific NumbersScience: Fibonacci, Recreations Specific Numbers · Facts about the Fibonacci Sequence Facts Specific Numbers . Fibonacci Numbers Spelled OutScience: Fibonacci, Recreations Specific Numbers · Derivations usually omitted by gurus and left for the reader to agonize over Numbers Spelled Out . L'univers de PiScience: L'univers, Recreations Specific Numbers · L'histoire de Pi à travers les âges de Pi les mathématiciens, leurs formules et les démonstrations. Le nombre d'orScience: Le nombre, Recreations Specific Numbers · Bases mathématiques et applications en architecture d'or . InfinityScience: Infinity, Recreations Specific Numbers · Article about infinity Infinity Talks about protential infinity and actual infinity. Hotel InfinityScience: Hotel, Recreations Specific Numbers · Includes articles on big ideas and concepts Infinity an introduction on background ideas, activities, books to read and a page of resources as well as a vocabulary index. Recreational Mathematics ForumMath Recreations - A forum for posting messages about math recreations Mathematics Forum Hosted at Delphi. Recreational Mathematics (David Eppstein) - Specific NumbersMath Recreations - An extensive list of web resources for recreational math Mathematics (David Eppstein) Specific Numbers . The Snarking of the HuntMath Recreations - Visitors are invited to analyse the verses to discover mathematical puzzles and riddles of the Hunt They are invited to offer solutions. Mathematics for FunMath Recreations - Interactive math pages including java Kali and a page on the world's largest prime for Fun . A Disproof of Pythagoras' Theorem? - Specific NumbersMath Recreations - A method of disproving the Theorem of Pythagoras is presented of Pythagoras' Theorem? Specific Numbers The author is adamant that this is intended only as a puzzle to find the mistake in the arguments, and not as a serious proposal. | |||||||||
