Maryam Mirzakhani, the first Iranian and the first woman to receive the Fields medal, died in July 2017 after a fight with breast cancer. She was the first Iranian and the first woman to receive the Fields medal. In 2000, she was only 40 years old when she passed away.
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Yutaka Taniyama
Yutaka Taniyama was a Japanese mathematician who, unfortunately, committed suicide on November 17, 1958, at thirty-three.