# Kōsaku Yosida

> Kōsaku Yosida (吉田 耕作, Yosida Kōsaku; 7 February 1909, Hiroshima – 20 June 1990) was a Japanese mathematician who worked in the field of functional analysis. He is known for the Hille-Yosida theorem concerning C0-semigroups. Yosida studied mathematics at the University of Tokyo, and held posts at Osaka and Nagoya Universities. In 1955, Yosida returned to the University of Tokyo.

*Japanese mathematician (1909-1990)*

**Canonical URL:** https://fame.am/person/kosaku-yosida

## Identity
- **Profile type:** Academic ([Wikidata](https://www.wikidata.org/entity/Q39631))
- **Category:** Academics
- **Country:** Japan
- **Born:** 1909-02-07
- **Died:** 1990-06-20
- **Status:** deceased
- **Gender:** male

## Bio

Imported from discovery source: wikidata-dump

## Fame
- **Popularity score:** 42.2 / 100
- **Momentum:** 0.0 / 100  (trend: FALLING)
- **Historical depth:** 7.2 / 100
- **Now attention:** 0.0 / 100
- **Source confidence:** 45.0 / 100
- **Profile completeness:** 70.0 / 100

## Sources
- [Иосида, Косаку](https://ru.wikipedia.org/wiki/%D0%98%D0%BE%D1%81%D0%B8%D0%B4%D0%B0%2C_%D0%9A%D0%BE%D1%81%D0%B0%D0%BA%D1%83)
- [كوساكو يوسيدا](https://arz.wikipedia.org/wiki/%D9%83%D9%88%D8%B3%D8%A7%D9%83%D9%88_%D9%8A%D9%88%D8%B3%D9%8A%D8%AF%D8%A7)
- [Kōsaku Yosida](https://ca.wikipedia.org/wiki/K%C5%8Dsaku_Yosida)
- [Kōsaku Yosida](https://de.wikipedia.org/wiki/K%C5%8Dsaku_Yosida)
- [Kōsaku Yosida](https://en.wikipedia.org/wiki/K%C5%8Dsaku_Yosida)
- [Kōsaku Yosida](https://fr.wikipedia.org/wiki/K%C5%8Dsaku_Yosida)
- [吉田耕作](https://ja.wikipedia.org/wiki/%E5%90%89%E7%94%B0%E8%80%95%E4%BD%9C)
- [Kōsaku Yosida](https://pt.wikipedia.org/wiki/K%C5%8Dsaku_Yosida)
- [Wikidata](https://www.wikidata.org/wiki/Q382402)

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