Change: The Collected Papers of Paul Erdos OnlineCombinatorics The (Combinatorial) Object Server The Art of Computer Programming Volume 4: Combinatorial Algorithms (pre-faciclies), by Donald Knuth The Number Theory Web On-line Dictionary of Combinatorics Integers - The Electronic Journal of Combinatorial Number Theory (free!) The Electronic Journal of Combinatorics Séminaire   View changes from previous version. (Word count: 581)

Change:  (the online version of the Handbook of Mathematical Functions)The Wolfram Functions SiteMacTutor History of MathematicsCombinatorics The (Combinatorial) Object Server The Art of Computer Programming Volume 4: Combinatorial Algorithms (pre-faciclies), by Donald Knuth The Number Theory Web On-line Dictionary of Combinatorics Integers - The   View changes from previous version. (Word count: 572)

Change:  by Chris RorresProgramming Mersenne Twister - A very fast random number generator of period 2^19937-1 Al Zimmermann's Programming Contests PARI/GP Home Page The Manuscripts of E.W. Dijkstra The Stoney Brook Algorithm Repository Professor Caldwell's Prime Pages Game of Life Simulator Golly GeoGebra and GeoGebraWiki Twenty-Six Moves Suffice   View changes from previous version. (Word count: 519)

Change: Twenty-Six Moves Suffice for Rubik’s Cube, experimental algoithmic study (pdf)Prizes The Wolfram 2,3 Turing Machine Research Prize ($25,000) Clay Mathematics Institute Millenium Problems 50'000€ Prize for Compressing Human Knowledge aka Hutter Prize www.netflixprize.com (1 meeellion dollars) The Beal Conjecture ($100,000 by the AMS) see also www.bealconjecture.com Al   View changes from previous version. (Word count: 506)

Change: ,a monthly feature b John Allen Paulos Programming Mersenne Twister - A very fast random number generator of period 2^19937-1 Al Zimmermann's Programming Contests PARI/GP Home Page The Manuscripts of E.W. Dijkstra The Stoney Brook Algorithm Repository Professor Caldwell's Prime Pages Game of Life Simulator Golly GeoGebra and GeoGebraWikiPrizes   View changes from previous version. (Word count: 493)

Change: Squaring the CircleProgramming Mersenne Twister - A very fast random number generator of period 2^19937-1 Al Zimmermann's Programming Contests PARI/GP Home Page The Manuscripts of E.W. Dijkstra The Stoney Brook Algorithm Repository Professor Caldwell's Prime Pages Game of Life Simulator GollyPrizes The Wolfram 2,3 Turing Machine Research Prize   View changes from previous version. (Word count: 470)

Change: Oragami - Robert J. Lang's Mathematical LinksProgramming Mersenne Twister - A very fast random number generator of period 2^19937-1 Al Zimmermann's Programming Contests PARI/GP Home Page The Manuscripts of E.W. Dijkstra The Stoney Brook Algorithm Repository Professor Caldwell's Prime Pages Game of Life Simulator GollyPrizes The Wolfram   View changes from previous version. (Word count: 458)

Change:  Professor Caldwell's Prime Pages Game of Life Simulator GollyPrizes The Wolfram 2,3 Turing Machine Research Prize ($25,000) Clay Mathematics Institute Millenium Problems 50'000€ Prize for Compressing Human Knowledge aka Hutter Prize www.netflixprize.com (1 meeellion dollars) The Beal Conjecture ($100,000 by the AMS) see also www.bealconjecture.com Al Zimmermann's Programming Contests   View changes from previous version. (Word count: 448)

Change:  25) KöMaL - Hungarian Journal for Secondary School studentsProgramming Mersenne Twister - A very fast random number generator of period 2^19937-1 Al Zimmermann's Programming Contests PARI/GP Home Page The Manuscripts of E.W. Dijkstra The Stoney Brook Algorithm Repository Professor Caldwell's Prime Pages Game of Life Simulator Golly   View changes from previous version. (Word count: 386)

Change: The Erdös Number ProjectRecreational Math Gathering for Gardner Professor H.S.M. Coxeter's home page Mathematics & Philosophy Education (UK blog) Rec Math by David Eppstein, including Geometry Junkyard Publications of Michael Kleber, co-author of Mathematical Entertainments column in Mathematical Intelligencer Ravi Vakil's home page, co-author   View changes from previous version. (Word count: 376)