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Mathworld

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'''MathWorld''' is an online mathematics reference work, sponsored by Wolfram Research Inc., the creators of the Mathematica computer algebra system. It is also partially funded by the National Science Foundation's National Science Digital Library grant to the University of Illinois at Urbana-Champaign.

History
Eric W. Weisstein, the creator of the site, was a physics and astronomy student who got into the habit of writing notes on his mathematical readings. In 1995 he put his notes online and called it "Eric's Treasure Trove of Mathematics"; it contained hundreds of pages/articles, covering a wide range of mathematical topics. The site became popular as an extensive single resource on mathematics on the web. Weisstein continuously improved the notes and accepted corrections and comments from online readers. Around 1997, he made a contract with CRC Press and the contents of the site were published in print and CD-ROM, titled "CRC Concise Encyclopedia of Mathematics". The free online version became only partially accessible to the public. In 1999 Weisstein went to work for Wolfram Research, Inc. (WRI), and WRI renamed the Math Treasure Trove to ''MathWorld'' at http://mathworld.wolfram.com and hosted it on the company's website without access restrictions.

CRC lawsuit
In 2000, CRC Press sued WRI, WRI president Stephen Wolfram, and author Eric Weisstein, due to what they considered a breach of contract: that the ''MathWorld'' content was to remain in print only. The site was taken down by a court injunction. The case was later settled out of court, with WRI paying an unspecified amount and complying with other stipulations. Among these stipulations is the inclusion of a copyright notice at the bottom of the website and broad rights for the CRC Press to produce ''MathWorld'' in printed book form. The site then became once again available free to the public. This case made a wave of headlines in online publishing circles. Some people accused CRC Press of corporate greed, and demanded a free online encyclopedia.

MathWorld, PlanetMath, and
Many people depend on a free mathematics encyclopedic resource on the Internet. Because of the temporary closure of ''MathWorld'', a number of individuals tried to start free online math encyclopedias from scratch. Currently, the most extensive of these is PlanetMath. also has Portal:Mathematics extensive math coverage.

Criticism
In some mathematical circles, notably the Usenet group sci.math, there has been some discussion over the quality of MathWorld's articles. While the information in MathWorld is considered generally correct, there have occasionally been misleading or false statements included in MathWorld articles.[http://groups.google.com/groups?selm=uFp8d.631408$gE.26496@pd7tw3no][http://groups.google.com/groups?selm=24fe76d6.0411291438.145f2e08@posting.google.com] Often people making this charge view MathWorld as a convenient resource, but are less likely to view it as definitive. Mathworld has a facility that allows readers to submit comments on individual articles. There is no known systematic study of MathWorld's consistency, nor that of other on-line math resources, so their quality remains a matter of debate and discussion.

See also
* ScienceWorld

External links

- Wolfram Research's MathWorld
- Eric Weisstein's account of the suit Category:Educational websites Category:Online encyclopedias Category:Mathematical literature it:MathWorld ko:MathWorld pl:MathWorld zh:MathWorld see MathWorld Eric W. Weisstein, [http://mathworld.wolfram.com/{{{urlname}}}.html {{{title}}}] at MathWorld. see Template:MathWorld

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