Aleksei Zinovyevich Petrov (; 28 October (15 October,

Old Style Old Style (O.S.) and New Style (N.S.) indicate dating systems before and after a calendar change, respectively. Usually, they refer to the change from the Julian calendar to the Gregorian calendar as enacted in various European countries betwe ...

) 1910, Koshki,

Samara Governorate Samara Governorate () was an administrative-territorial unit ('' guberniya'') of the Russian Empire and the Russian SFSR, located in the Volga Region. It existed from 1850 to 1928; its capital was in Samara Samara, formerly known as Kuybyshev ...

Russian Empire The Russian Empire was an empire that spanned most of northern Eurasia from its establishment in November 1721 until the proclamation of the Russian Republic in September 1917. At its height in the late 19th century, it covered about , roughl ...

– 9 May 1972,

Kiev Kyiv, also Kiev, is the capital and most populous List of cities in Ukraine, city of Ukraine. Located in the north-central part of the country, it straddles both sides of the Dnieper, Dnieper River. As of 1 January 2022, its population was 2, ...

Soviet Union The Union of Soviet Socialist Republics. (USSR), commonly known as the Soviet Union, was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 until Dissolution of the Soviet ...

) was a

mathematician A mathematician is someone who uses an extensive knowledge of mathematics in their work, typically to solve mathematical problems. Mathematicians are concerned with numbers, data, quantity, mathematical structure, structure, space, Mathematica ...

noted for his work on the classification of Einstein spaces, today called

Petrov classification In differential geometry and theoretical physics, the Petrov classification (also known as Petrov–Pirani–Penrose classification) describes the possible algebraic symmetries of the Weyl tensor at each event in a Lorentzian manifold. It is most ...

. The Petrov classification is related with the

Weyl tensor In differential geometry, the Weyl curvature tensor, named after Hermann Weyl, is a measure of the curvature of spacetime or, more generally, a pseudo-Riemannian manifold. Like the Riemann curvature tensor, the Weyl tensor expresses the tidal for ...

and it was first published by A. Z. Petrov in 1954.

External links

A biography of Petrov from Kazan State University
{{DEFAULTSORT:Petrov, Aleksei Zinovyevich 1910 births 1972 deaths Soviet mathematicians