>>469
>工学者からの質問をきっかけとして、積分幾何の問題に取り組み、領域の変形の立場で、Pompeiu予想（1900年代初頭より未解決の問題）が正しいことを小林が証明したとき、小林はまだ修士の学生であった。

下記に、小林 俊行の名前が出てこない・・、はて？

https://en.wikipedia.org/wiki/Pompeiu_problem
Pompeiu problem
(抜粋)
In mathematics, the Pompeiu problem is a conjecture in integral geometry, named for Dimitrie Pompeiu, who posed the problem in 1929, as follows.
Suppose f is a nonzero continuous function defined on a Euclidean space, and K is a simply connected Lipschitz domain, so that the integral of f vanishes on every congruent copy of K. Then the domain is a ball.
A special case is Schiffer's conjecture.

https://www.encyclopediaofmath.org/index.php/Pompeiu_problem
Pompeiu problem. Carlos A. Berenstein (originator), Encyclopedia of Mathematics. This page was last modified on 7 February 2011,