Re: Ну не скажите !
> Ито до 1945 года до конца войны работал чиновником в министерстве.

> After that he started to work for the national statistical office, where he published two of his seminal works on probability and stochastic processes.

Работал по специальности.

Публикации до 1945 года :

1942

On stochastic processes (infinitely divisible laws of probability) (Doctoral thesis). Japan Journ. Math. XVIII, 261-301.
1942

Differential equations determining a Markoff process (original Japanese: Zenkoku Sizyo Sugaku Danwakai-si). Journ. Pan-Japan Math. Coll. No.1077.

1943

Foundation of Probability Theory (in Japanese), Iwanami. Tokyo.
1944

On the ergodicity of certain stationary processes. In: Proc. Imp. Acad. Tokyo 20, 54-55.

1944

A kinematic theory of turbulence. In: Proc. Imp. Acad. Tokyo 20, 120-122.

1944

On the normal stationary process with no hysteresis. In: Proc. Imp. Acad. Tokyo 20, 199-202.

1944

A screw line in Hilbert space and its application to the probability theory. Proc. Imp. Acad. Tokyo 20, 203-209.

1944

Stochastic integral. In: Proc. Imp. Acad. Tokyo 20, 519-524.

1944

On Student's test. Proc. Imp. Acad. Tokyo 20, 694-700.

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В своей публикации 1944 года , определяет стохастический интеграл :
1944

Stochastic integral. In: Proc. Imp. Acad. Tokyo 20, 519-524.

Так что никакой папа ему был не нужен.