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Re:A Grimoire of Functions by wbl on Tuesday July 23, 2019 @08:57PM (#20511515)
See also Abramowitz and Stegun, of which the latest edition is https://dlmf.nist.gov/
Re:A Grimoire of Functions by tigerlily on Tuesday July 23, 2019 @09:48PM (#20511774)
They have a really nice changelog.