Mathematician Stamps

Z


  • Abu Ishaq Ibrahim Ibn Yahya Al-Zarqali (Arzachel) 1028 – 1087


  • Zeki Salih (1864-1921)

(D. 1864, Istanbul - Ö. 1921, Istanbul),


Turkish mathematician. He was born in Istanbul in 1864 the son of a poor man named Boyabatli Hasan Aga. After losing his father and his mother, who was named Saniye Hanim, his grandmother enrolled him in the Darussafaka (a famous high school for gifted orphans) when he was ten. He graduated from there in 1882. He then entered the service of the Post and Telegraph Science Bureau. After being sent to Paris in 1884, he gained first class honors there in electrical engineering and he returned to Istanbul in 1887. After serving as an electrical engineer in the Post and Telegraph Bureau, in 1895 he became the director of the Astronomical Observatory. After the Revolution of 1908, he became a fellow of the Science Council. In 1910 he became Director of the Galatasaray Lisesi in the place of Tevfik Fikret. In 1912 he became the Under-Secretary for Science, and in the following year the General Director of the Darulfunun. Then he taught physics and mathematics and wrote many textbooks for students. His most important works are General treatise on mathematics and Archeology (Asari bayike). He made numerous contributions to the journal Ikdam; the Journal of the Darussafaka; the journal Iktisadiyat; and the Darulfunun magazine. He was married three times; his second wife being the noted novelist, Halide Edip Adivar. In his later years he suffered from mental illness. He died in 1921 in the French hospital in Sisli, a section of Istanbul. He is interred in the garden of the Fatih mosque.


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