Carl Severin Wigert (1871–1941) was a Swedish

mathematician A mathematician is someone who uses an extensive knowledge of mathematics in their work, typically to solve mathematical problems. Mathematicians are concerned with numbers, data, quantity, mathematical structure, structure, space, Mathematica ...

who created Stieltjes–Wigert polynomials and worked on the

divisor function In mathematics, and specifically in number theory, a divisor function is an arithmetic function related to the divisors of an integer. When referred to as ''the'' divisor function, it counts the ''number of divisors of an integer'' (includi ...

, including correctly describing its maximal order of growth. Wigert proved that :

\limsup_\frac=\log2.

Selected publications

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References

* 20th-century Swedish mathematicians 1871 births 1941 deaths {{Sweden-mathematician-stub