Rostislav Ivanovich Grigorchuk, born on February 23, 1953, is a mathematician working in group theory, dynamical systems, geometry and computer science, and a Distinguished Professor in the Mathematics Department of Texas A&M University. He is particularly well known for having constructed, in a 1984 paper, the first example of a finitely generated group of intermediate growth, answering an important problem posed by John Milnor in 1968; this group is now known as the Grigorchuk group and is one of the important objects studied in geometric group theory. He is one of the pioneers of asymptotic group theory, introduced the notion of branch groups, and initiated with collaborators the theory of groups generated by finite Mealy type automata.
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Source Grigorchuk Group (Wikipedia)
In Branch
Source Wikipedia: Rostislav Grigorchuk
Principal Result
Source Wikipedia: Rostislav Grigorchuk
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1. Wikipedia: Rostislav Grigorchuk
Opening sentence
Rostislav Ivanovich Grigorchuk (Russian: Ростислав Иванович Григорчук; Ukrainian: Ростисла́в Iва́нович Григорчу́к; b. February 23, 1953
Lead
He holds the rank of Distinguished Professor in the Mathematics Department of Texas A&M University.
Principal Result: Grigorchuk Group, Article text
Grigorchuk is most well known for having constructed the first example of a finitely generated group of intermediate growth which now bears his name and is called the Grigorchuk group (sometimes it is also called the first Grigorchuk group since Grigorchuk constructed several other groups that are also commonly studied
View the SourceGrigorchuk Group (Wikipedia)
Attributed Works: Grigorchuk Group, Lead sentence, attributionQuote, Attributed Works: Grigorchuk Group, Lead sentence, attribution
constructed by Rostislav Grigorchuk
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