Meanings
proper noun
- mathematicsThe number ζ(3)=∑ₙ₌₁ ᪲1/(n³), where ζ is the Riemann zeta function, with a value of approximately 1.2020569…
Origin
Named after French mathematician Roger Apéry who proved in 1978 that it is an irrational number.
Full word history & related roots →Cite this entry
APA
Apéry's constant. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/Ap%C3%A9ry's%20constant
MLA
“Apéry's constant.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Ap%C3%A9ry's%20constant. Accessed November 5, 2026.
Chicago
WatkinsX Dictionary, s.v. “Apéry's constant,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/Ap%C3%A9ry's%20constant.
Source: Apéry's constant on Wiktionary, CC BY-SA 4.0.