Gelenbevi Ismail Efendi
Encyclopedia
Ismail Gelenbevi was an Ottoman
mathematician and professor at the Naval College in Istanbul
, Turkey
.
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 ("Paşa" in modern Turkish) (1782–1785), 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.
Turkish people
Turkish people, also known as the "Turks" , are an ethnic group primarily living in Turkey and in the former lands of the Ottoman Empire where Turkish minorities had been established in Bulgaria, Cyprus, Bosnia and Herzegovina, Georgia, Greece, Kosovo, Macedonia, and Romania...
mathematician and professor at the Naval College in Istanbul
Istanbul
Istanbul , historically known as Byzantium and Constantinople , is the largest city of Turkey. Istanbul metropolitan province had 13.26 million people living in it as of December, 2010, which is 18% of Turkey's population and the 3rd largest metropolitan area in Europe after London and...
, Turkey
Turkey
Turkey , known officially as the Republic of Turkey , is a Eurasian country located in Western Asia and in East Thrace in Southeastern Europe...
.
Born in 1730 in the town of Gelenbe near Manisa
Manisa
Manisa is a large city in Turkey's Aegean Region and the administrative seat of Manisa Province.Modern Manisa is a booming center of industry and services, advantaged by its closeness to the international port city and the regional metropolitan center of İzmir and by its fertile hinterland rich in...
, 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
Istanbul
Istanbul , historically known as Byzantium and Constantinople , is the largest city of Turkey. Istanbul metropolitan province had 13.26 million people living in it as of December, 2010, which is 18% of Turkey's population and the 3rd largest metropolitan area in Europe after London and...
where he rose through the Ottoman
Ottoman Empire
The Ottoman EmpireIt was usually referred to as the "Ottoman Empire", the "Turkish Empire", the "Ottoman Caliphate" or more commonly "Turkey" by its contemporaries...
examination system to the rank of "Müderris" or professor, at the age of 33.
At the request of the Sadrazam or Grand Vizier
Grand Vizier
Grand Vizier, in Turkish Vezir-i Azam or Sadr-ı Azam , deriving from the Arabic word vizier , was the greatest minister of the Sultan, with absolute power of attorney and, in principle, dismissable only by the Sultan himself...
Halil Hamit Pasha ("Paşa" in modern Turkish) (1782–1785), and of the Fleet Admiral Cezayirli Hasan Pasha, he was appointed to a professorship in mathematics at the Naval College in Kasımpaşa
Kasımpaşa (district)
Kasımpaşa is a quarter within the Beyoğlu district of Istanbul, Turkey. It is a low-lying area north of the Golden Horn in the European part of the city. Neighbouring quarters include Dolapdere and Kurtuluş.-History:...
, on the Golden Horn
Golden Horn
The Golden Horn is a historic inlet of the Bosphorus dividing the city of Istanbul and forming the natural harbor that has sheltered Greek, Roman, Byzantine, Ottoman and other ships for thousands of...
, in Istanbul. He received an award from the Emperor Sultan Selim III
Selim III
Selim III was the reform-minded Sultan of the Ottoman Empire from 1789 to 1807. The Janissaries eventually deposed and imprisoned him, and placed his cousin Mustafa on the throne as Mustafa IV...
for his very accurate ballistic
Ballistics
Ballistics is the science of mechanics that deals with the flight, behavior, and effects of projectiles, especially bullets, gravity bombs, rockets, or the like; the science or art of designing and accelerating projectiles so as to achieve a desired performance.A ballistic body is a body which is...
computations.
Ismail Gelenbevi published some thirty five scientific articles written in Turkish
Turkish language
Turkish is a language spoken as a native language by over 83 million people worldwide, making it the most commonly spoken of the Turkic languages. Its speakers are located predominantly in Turkey and Northern Cyprus with smaller groups in Iraq, Greece, Bulgaria, the Republic of Macedonia, Kosovo,...
and Arabic
Arabic language
Arabic is a name applied to the descendants of the Classical Arabic language of the 6th century AD, used most prominently in the Quran, the Islamic Holy Book...
. He is credited with the introduction of logarithms in Turkey. Professor Erol Gelenbe
Erol Gelenbe
Sami Erol Gelenbe is a Turkish computer scientist, engineer and applied mathematician who currently holds the Dennis Gabor Professorship at Imperial College...
at Imperial College, London, is his direct descendant.