NIST Digital Library of Mathematical Functions

The NIST Handbook of Mathematical Functions, serves a similar function as the original Abramowitz and Stegun handbook published in 1964, though it is heavily updated and extended. The online version, the NIST Digital Library of Mathematical Functions (DLMF), presents the same technical information along with extensions and innovative interactive features consistent with the new medium. The DLMF may well serve as a model for the effective presentation of highly mathematical reference material on the Web.