Definition:Apéry's Constant/Historical Note
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Historical Note on Apéry's Constant
Apéry's constant was first investigated by Leonhard Paul Euler, who tried but failed to calculate its value.
Its precise value is still unknown.
However, in $1979$ Roger Apéry published a proof that it is irrational.
The statement of this fact is now known as Apéry's Theorem, and the constant itself is known as Apéry's constant.
Sources
- 1983: François Le Lionnais and Jean Brette: Les Nombres Remarquables ... (previous) ... (next): $1,20205 69 \ldots$