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PlanetMath is a virtual community which aims to help make mathematical knowledge more accessible. PlanetMath's content is created collaboratively: the main feature is the mathematics encyclopedia with entries written and reviewed by members. The entries are contributed under the terms of the GNU Free Documentation License (FDL) in order to preserve the rights of both the authors and readers in a sensible way.

PlanetMath entries are written in LaTeX, the lingua franca of the worldwide mathematics community. All of the entries are automatically cross-referenced with each other, and the entire corpus is kept updated in real-time.

In addition to the mathematics encyclopedia, there are books, expositions, papers, and forums. You also might want to check out encyclopedia requests if you'd like to see something we don't have. We also have the encyclopedia available in offline-browsable snapshot form, and in book form. Also see PlanetMath-exclusive feature articles and topics.

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Latest Messages
Jul 4 03:01 - parent thread top Re: direct sums and subspaces by YwTing
Jul 4 01:38 - parent thread top Re: Community Discussion (reminder) by rspuzio
Jul 3 23:04 - parent direct sums and subspaces by anni
Jul 3 18:25 - parent thread top Re: What is the resulting space? by whm22
Jul 3 17:46 - parent thread top Re: What is the resulting space? by rspuzio
Jul 3 17:44 - parent thread top Re: What is the resulting space? by TheoricienQuantique
Jul 3 16:39 - parent thread top Re: What is the resulting space? by whm22
Jul 3 16:22 - parent thread top Re: Complex potential / conformal mapping by Omri
Jul 3 14:17 - parent thread top Re: Complex potential / conformal mapping by rspuzio
Jul 3 14:11 - parent thread top Re: What is the resulting space? by TheoricienQuantique
Jul 3 13:10 - parent Complex potential / conformal mapping by Omri
Jul 3 12:17 - parent thread top Re: Conjecture by rspuzio
Jul 3 11:16 - parent thread top Re: Ponder This by lynx
Jul 3 10:59 - parent thread top Re: Ponder This by lynx
Jul 3 05:50 - parent thread top Re: Ponder This by whm22
Jul 2 22:53 - parent thread top Re: Nested prooves by contraction? by nkirby
Jul 2 22:41 - parent Pseudocomplement and dual pseudocomplement by porton
Jul 2 21:02 - parent thread top Re: Nested prooves by contraction? by ratboy
Jul 2 20:18 - parent thread top Re: Ponder This by rm50
Jul 2 20:12 - parent thread top Re: What is the resulting space? by whm22
Jul 2 19:01 - parent Your PDF of QED, etc by bci1
Jul 2 19:00 - parent thread top Re: What is the resulting space? by TheoricienQuantique
Jul 2 18:13 - parent thread top Re: Nested prooves by contraction? by PrimeFan
Jul 2 18:11 - parent thread top Re: Nested prooves by contraction? by PrimeFan
Jul 2 10:34 - parent thread top Re: What is the resulting space? by whm22
Jul 2 07:12 - parent thread top Re: Conjecture by akdevaraj
Jul 2 02:50 - parent thread top Re: Nested prooves by contraction? by ratboy
Jul 2 01:49 - parent thread top Re: Conjecture by azdbacks4234
Jul 2 01:29 - parent Conjecture by akdevaraj
Jul 2 00:29 - parent Ponder This by PARASHAR

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