Basel problem — English Dictionary

Proper noun

1. The question as to the value of ∑ₙ₌₁ ᪲1/(n²), the sum of the reciprocals of the squares of the positive integers.

   Examples

   As noted, some of Euler's contemporaries, while accepting his answer to the Basel Problem, wondered about the validity of the argument that got him there.

   Solving the Basel problem was one of the early triumphs of L. Euler (1707–1783)... .

   More examples (1)

   And so ends one of Euler's most famous papers. We see that Euler actually solves the Basel problem three times and that he does much more.