NIST Digital Library of Mathematical Functions / 25.6 Integer Arguments 2026-10-14
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Online text: dlmf.nist.gov/25.6
Part of Chapter 25, Zeta and Related Functions, credited to T. M. Apostol. The site release date is not treated as the chapter publication year.
Cited passages: §25.6(i), equations 25.6.1–25.6.2: positive even arguments.
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NIST Digital Library of Mathematical Functions / 27.9 Quadratic Characters Created 2026-10-13 Updated 2026-10-14
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Online text: dlmf.nist.gov/27.9
Part of Chapter 27, Functions of Number Theory, credited to T. M. Apostol. The site version release date is not treated as the chapter publication year.
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Tom M. Apostol Created 2026-10-13 Updated 2026-11-05
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Tom M. Apostol contributed mathematical reference material on special functions and number theory, including the zeta function and Dirichlet characters. These topics connect infinite series, integer arithmetic and analytic identities.[ref]
Official profile, including a portrait: dlmf.nist.gov/about/bio/TMApostol
Figure 1.
Portrait of Tom M. Apostol
. Unidentified photographer; Caltech yearbook The Big T 1965; existing Commons portrait extract. Commons PD-US-no-notice claim for US publication without copyright notice during 1931–1977; other jurisdictions may retain protection., via Wikimedia Commons. Source.
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