Platon Poretsky
Encyclopedia
Platon Sergeevich Poretsky (born October 3, 1846, Elisavetgrad
Kirovohrad
Kirovohrad , formerly Yelisavetgrad, is a city in central Ukraine. It is located on the Inhul River. It is a motorway junction. Pop. 239,400 ....

 - August 9, 1907) was a noted Russian
Russians
The Russian people are an East Slavic ethnic group native to Russia, speaking the Russian language and primarily living in Russia and neighboring countries....

 astronomer
Astronomer
An astronomer is a scientist who studies celestial bodies such as planets, stars and galaxies.Historically, astronomy was more concerned with the classification and description of phenomena in the sky, while astrophysics attempted to explain these phenomena and the differences between them using...

, mathematician
Mathematician
A mathematician is a person whose primary area of study is the field of mathematics. Mathematicians are concerned with quantity, structure, space, and change....

, and logician. Graduated from Kharkov University he worked in Astrakhan
Astrakhan
Astrakhan is a major city in southern European Russia and the administrative center of Astrakhan Oblast. The city lies on the left bank of the Volga River, close to where it discharges into the Caspian Sea at an altitude of below the sea level. Population:...

 and Pulkovo
Pulkovo
Pulkovo may refer to:*Pulkovo Heights marking the southern limit of Saint Petersburg, Russia*Pulkovo Airport serving that city*Pulkovo Aviation Enterprise, a former state airline based in Saint Petersburg, Russia...

. Later being an astronomer at Kazan University after an advice of his older colleague Professor of Mathematics A.V. Vasiliev at Kazan University (father of Nicolai A. Vasiliev
Nicolai A. Vasiliev
Nicolai Alexandrovich Vasiliev , also Vasil'ev, Vassilieff, Wassilieff was a Russian logician, philosopher, psychologist, poet, the forerunner of paraconsistent and multi-valued logics.-Early years:...

) to learn works of Boole Poretsky developed "logical calculus" and through specific "logical equations" applied it to the theory of probability. Thus, he extended and augmented the works of logicians and mathematicians George Boole
George Boole
George Boole was an English mathematician and philosopher.As the inventor of Boolean logic—the basis of modern digital computer logic—Boole is regarded in hindsight as a founder of the field of computer science. Boole said,...

, William Stanley Jevons
William Stanley Jevons
William Stanley Jevons was a British economist and logician.Irving Fisher described his book The Theory of Political Economy as beginning the mathematical method in economics. It made the case that economics as a science concerned with quantities is necessarily mathematical...

 and Ernst Schröder
Ernst Schröder
Ernst Schröder was a German mathematician mainly known for his work on algebraic logic. He is a major figure in the history of mathematical logic , by virtue of summarizing and extending the work of George Boole, Augustus De Morgan, Hugh MacColl, and especially Charles Peirce...

.

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