MathWorld is the web's most extensive mathematical resource, provided as a free service to the world's mathematics and internet communities as part of Wolfram Research's commitment to education and educational outreach.
MathWorld has been assembled for more than 25 years by Eric W. Weisstein with assistance from thousands of contributors. Since its contents first appeared online in 1995, MathWorld has emerged as the destination of choice for mathematical information among both the mathematics and educational communities. Its entries are extensively referenced in online resources, journals and books spanning all educational levels, including those read by researchers, elementary school students and teachers, engineers and hobbyists.
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