NIST Digital Library of Mathematical Functions compared with Wolfram MathWorld, Abramowitz and Stegun, and Wolfram Functions| NIST DLMF | Wolfram MathWorld | Abramowitz and Stegun | Wolfram Functions |
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| Origin and authority: NIST released the DLMF online in 2010 as the successor to the 1964 handbook. About 50 external researchers contributed and NIST staff edited it. Cambridge University Press published a printed subset. | Origin and authority: Eric W. Weisstein created the site and largely wrote it, starting in 1995 from personal study notes. Wolfram Research sponsors it and holds a license to it. | Origin and authority: The handbook was published in 1964 by the National Bureau of Standards, now NIST, and edited by Milton Abramowitz and Irene Stegun. It runs to about 1,046 pages. | Origin and authority: The site belongs to Wolfram Research and presents itself as the largest formula compendium for mathematical functions on the web. |
| Content and form: The content covers special functions with interactive graphics, a math-based search engine, and links to references and software. | Content and form: It is an online encyclopedia covering a wide range of mathematics, not only special functions. It also appeared in print and on CD-ROM as the CRC Concise Encyclopedia of Mathematics. | Content and form: The handbook gives definitions, identities, approximations, plots and tables of values. NIST noted that more than half the pages were tables that are rarely needed with modern computers. | Content and form: Formulas are available in Wolfram Language StandardForm, MathML and ASCII, and the site shows how functions relate to each other. Wolfram Notebooks and PDF versions can be downloaded. |
| الترخيص والتكلفة: NIST claims copyright over the DLMF, unlike the public-domain original handbook. | الترخيص والتكلفة: Access is free. It returned to free public access in November 2001 after a legal dispute with CRC Press, which holds broad print rights. | الترخيص والتكلفة: As a work of federal employees it is not protected by copyright in the United States. Several scans are online, and Dover issued a reprint. | |
| Accuracy and maintenance: The site is active and has been online since November 1999. | Accuracy and maintenance: Many printings added corrections, the tenth in 1972 among them, but some errata remain. A typo on page 886 spread into the name Bode rule for Boole rule. | Accuracy and maintenance: The About page says gaps in the content may point to areas needing further research. |
