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[[Image:POPOV.JPG|right|thumb|150px|Vasile Mihai Popov]]
'''Vasile Mihai Popov''' (born 1928) is a leading [[system theory|systems theorist]] and [[control engineering]] specialist. He is well known for having developed a method to analyze [[stability theory|stability]] of nonlinear [[dynamical systems theory|dynamical systems]], now known as [[Non-linear control#Popov criterion|Popov criterion]].

== Biography ==
He was born in [[Galaţi]], [[Romania]] on July 7, 1928. He received the engineering degree in electronics from the [[Bucharest]] [[Polytechnic University of Bucharest|Polytechnic Institute]] in 1950. 

He worked for a few years as Assistant Professor at the [[Polytechnic University of Bucharest|Bucharest Polytechnic Institute]] in the Faculty of Electronics. His main research interests during this period were in frequency modulation and parametric oscillations. In the mid 1950s, he joined the Institute for Energy of Romanian Academy of Science in Bucharest. In the 1960s, Popov headed the Control group at the Institute of Energy of the [[Romanian Academy]].

In 1968 Popov left Romania. He was a visiting professor at the Electrical Engineering departments of [[University of California, Berkeley]], and [[Stanford University]], and then Professor in the
department of electrical engineering at the  [[University of Maryland College Park]]. In 1975 he joined the mathematics department of [[University of Florida]] Gainesville. 

He retired in 1993 and currently resides in [[Gainesville, Florida]], USA.

== Work ==
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=== Qualitative theory of differential equations ===
Motivated by stability issues in nuclear reactors and by his participation in a seminar series on qualitative theory of [[differential equations]] run by [[A. Halanay]], Popov started working in stability of nonlinear [[feedback]] systems, in particular on the [[Lur'e-Postnikov problem]]. 

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== References ==
*{{cite journal|first=B.D.O.|last= Anderson|coauthors=P. Kokotovic, I.D. Landau and J.C Willems|title=Dissipativity of dynamical systems: applications in control -- dedicated to Vasile Mihai Popov|issue=Special issue|journal=European Journal of Control|volume=8|year=2002}}.

{{Authority control|VIAF=17754161}}

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{{Persondata <!-- Metadata: see [[Wikipedia:Persondata]]. -->
| NAME              = Popov, Vasile M.
| ALTERNATIVE NAMES =
| SHORT DESCRIPTION = American mathematician
| DATE OF BIRTH     = 1928
| PLACE OF BIRTH    =
| DATE OF DEATH     =
| PLACE OF DEATH    =
}}
{{DEFAULTSORT:Popov, Vasile M.}}
[[Category:1928 births]]
[[Category:American mathematicians]]
[[Category:Control theorists]]
[[Category:Living people]]
[[Category:People from Galaţi]]
[[Category:Romanian mathematicians]]
[[Category:American people of Romanian descent]]
[[Category:Politehnica University of Bucharest alumni]]
[[Category:Politehnica University of Bucharest faculty]]