Mathematics websites

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MathWorld is an online mathematics reference work, created and largely written by Eric W. Weisstein. It is sponsored by and licensed to Wolfram Research, Inc. and was partially funded by the National Science Foundation's National Science Digital Library grant to the University of Illinois at Urbana–Champaign.

Volunteer project using software to search for Mersenne prime numbers

PlanetMath is a free, collaborative, mathematics online encyclopedia. Intended to be comprehensive, the project is currently hosted by the University of Waterloo. The site is owned by a US-based nonprofit corporation, "PlanetMath.org, Ltd".

large reference work translated from Soviet source

online resource containing biographies of mathematicians

site of problems to be solved using programming knowledge

Organized and open-source collection of interactive programs representing ideas from a range of fields

online project meant to be a collection of special functions

MathOverflow is a mathematics question-and-answer (Q&A) website, which serves as an online community of mathematicians. It allows users to ask questions, submit answers, and rate both, all while getting merit points for their activities. It is a part of the Stack Exchange Network, but distinct from math.stackexchange.com.

The '''nLab' is a wiki for research-level notes, expositions and collaborative work. It includes original research in mathematics, physics, and philosophy with a focus on methods from type theory, category theory, and homotopy theory. The nLab espouses the "n''-point of view" (a deliberate pun on Wikipedia's "neutral point of view"), which is that type theory, homotopy theory, category theory, and higher category theory provide a useful, unifying viewpoint for mathematics, physics and philosophy.

Soviet-born Israeli American mathematician