Gelenbevi Ismail Efendi
Mathematician, Deceased Person
Who is Gelenbevi Ismail Efendi?
Born in 1730 in the town of Gelenbe near Manisa, at that time in the Province of Aydin in Western Turkey, he is known under the name "Gelenbevi", which means "de Gelenbe" in French, and "von Gelenbe" in German. He studied in İstanbul where he rose through the Ottoman examination system to the rank of "Müderris" or professor, at the age of 33.
At the request of the Sadrazam or Grand Vizier Halil Hamit Pasha, and of the Fleet Admiral Cezayirli Hasan Pasha, he was appointed to a professorship in mathematics at the Naval College in Kasımpaşa, on the Golden Horn, in Istanbul. He received an award from the Emperor Sultan Selim III for his very accurate ballistic computations.
Ismail Gelenbevi published some thirty five scientific articles written in Turkish and Arabic. He is credited with the introduction of logarithms in Turkey. Professor Erol Gelenbe at Imperial College, London, is his direct descendant.
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