Kiyoshi Oka facts for kids
Quick facts for kids
Kiyoshi Oka
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Kiyoshi Oka in 1973
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| Born | April 19, 1901 |
| Died | March 1, 1978 (aged 76) |
| Nationality | Japanese |
| Alma mater | Kyoto Imperial University |
| Known for | Oka coherence theorem Oka's lemma Oka–Weil theorem Plurisubharmonic function |
| Awards | Asahi Prize (1953) Japan Academy Prize (1951) Order of Culture (1960) Order of the Sacred Treasure, 1st class (1973) |
| Scientific career | |
| Fields | Mathematician |
| Institutions | Kyoto Imperial University Hiroshima University Hokkaido University Nara Women's University Kyoto Sangyo University |
Kiyoshi Oka (岡 潔, Oka Kiyoshi, April 19, 1901 – March 1, 1978) was a brilliant Japanese mathematician. He made very important discoveries in a complex area of math. This field is called the theory of "several complex variables." It deals with functions that have multiple complex numbers as inputs. His work helped shape modern mathematics.
Kiyoshi Oka's Life and Discoveries
Kiyoshi Oka was born in Osaka, Japan. He started studying at Kyoto Imperial University in 1919. By 1923, he decided to focus on mathematics. He graduated from the university in 1924.
In 1929, Oka traveled to Paris, France, and lived there for three years. After his time in Paris, he returned to Japan. He began working at Hiroshima University. Between 1936 and 1940, he published solutions to some big math problems. These included the first and second Cousin problems. He also worked on "domains of holomorphy."
In 1940, Oka earned his Doctor of Science degree from Kyoto Imperial University. His important work was later used by other mathematicians, like Henri Cartan. It played a key role in developing something called "sheaf theory."
One of his famous contributions is the Oka–Weil theorem. This theorem came from work by both Oka and another mathematician named André Weil.
Oka kept working hard in his field. In 1950, he proved the Oka's coherence theorem. Another important idea, Oka's lemma, is also named after him.
From 1949 until he retired in 1964, he was a professor at Nara Women's University. He received many special awards and honors in Japan for his amazing contributions to mathematics.
Awards and Recognition
Kiyoshi Oka received many honors for his groundbreaking work:
- 1951 Japan Academy Prize
- 1954 Asahi Prize
- 1960 Order of Culture
- 1973 Order of the Sacred Treasure, 1st class
