MetaFilter posts tagged with mathematics and encyclopedia

The On-Line Encyclopedia of Integer Sequences

parudox — Tue, 10 Mar 2009 10:37:33 -0800

Ever wondered what comes next, and why? The On-Line Encyclopedia of Integer Sequences has the answers. (Previously.)

Homework Helper

netbros — Wed, 18 Feb 2009 21:39:07 -0800

World of Science contains budding encyclopedias of astronomy, scientific biography, chemistry, and physics. This resource has been assembled over more than a decade by internet encyclopedist Eric Weisstein with assistance from the internet community. MeFi visited Weisstein's Mathworld a couple years ago.

It's more free maths!

Iosephus — Sat, 02 Aug 2008 01:00:59 -0800

Online Encyclopedia of Mathematics Edited by Michiel Hazewinkel (CWI, Amsterdam), and originaly published in dead tree form in 2002, now free to browse and poke into. Seems to have been made available online by Springer-Verlag for 2 years or so, and somehow I missed it all this time until I stumbled on it during a somewhat obscure googling for a calculus question over AskMe. It seems to lack a search functionality, which is a pity. "The Online Encyclopaedia of Mathematics is the most up-to-date and comprehensive English-language graduate-level reference work in the field of mathematics today. This online edition comprises more than 8,000 entries and illuminates nearly 50,000 notions in mathematics. The Encyclopaedia of Mathematics is updated on a regular basis to remain a quick, precise source of reference to mathematical definitions, concepts, explanations, surveys, examples, terminology and methods, which will prove useful for all mathematicians and other scientists who encounter mathematics in their work. "

Life is complex: it has both real and imaginary components

Blazecock Pileon — Thu, 27 Sep 2007 05:31:50 -0800

More than fifty selected articles from The Princeton Companion of Mathematics (username: Guest, password: PCM) — a thematically-organized compendium of mathematics and mathematicians from Fields Medal-winner Tim Gowers. [via, previously]

vacapinta — Mon, 15 Apr 2002 23:16:37 -0800

Can you stump the Encyclopedia of Integer Sequences? Every identifiable sequence known to man, including:

Name: Busy Beaver problem: maximal number of steps that an n-state Turing machine can make on an initially blank tape before eventually halting.
Comment: The sequence grows faster than any computable function of n, and so is non-computable.
Keywords: hard,huge,nice,nonn,bref

If your sequence does not appear there, you might want to try the Super Seeker.