"Apéry's constant" meaning in English

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        "The number ζ(3)=∑ₙ₌₁ ᪲1/(n³), where ζ is the Riemann zeta function, with a value of approximately 1.2020569…"
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        "(mathematics) The number ζ(3)=∑ₙ₌₁ ᪲1/(n³), where ζ is the Riemann zeta function, with a value of approximately 1.2020569…"
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  "etymology_text": "Named after French mathematician Roger Apéry who proved in 1978 that it is an irrational number.",
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        "(mathematics) The number ζ(3)=∑ₙ₌₁ ᪲1/(n³), where ζ is the Riemann zeta function, with a value of approximately 1.2020569…"
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