Semyon Aranovich Gershgorin and Vladimir Berkovich, have which occupation?
Vladimir Berkovich Vladimir Berkovich is a mathematician at the Weizmann Institute of Science who introduced Berkovich spaces. His Ph.D. advisor was Yuri I. Manin. Berkovich was a visiting scholar at the Institute for Advanced Study in 1991-92 and again in the summer of 2000.
Friedrich Caspar von Geismar Friedrich Caspar von Geismar (also known as Fyodor Geismar, Russian: Фёдор Клементьевич Гейсмар ; 1783-1848) was an Austrian-German military officer who spent the best part of his career in the service of Imperial Russian Army. He eventually rose to the rank of General and became an adjutant to tsar Nicholas I of Russia.