Israel Gohberg ( he, ישראל גוכברג; russian: Изра́иль Цу́дикович Го́хберг; 23 August 1928 – 12 October 2009) was a

Bessarabia Bessarabia (; Gagauz: ''Besarabiya''; Romanian: ''Basarabia''; Ukrainian: ''Бессара́бія'') is a historical region in Eastern Europe, bounded by the Dniester river on the east and the Prut river on the west. About two thirds of Be ...

n-born

Soviet The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, it was nominally a federal union of fifteen nation ...

and

Israel Israel (; he, יִשְׂרָאֵל, ; ar, إِسْرَائِيل, ), officially the State of Israel ( he, מְדִינַת יִשְׂרָאֵל, label=none, translit=Medīnat Yīsrāʾēl; ), is a country in Western Asia. It is situated ...

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, structure, space, models, and change. History On ...

, most known for his work in

operator theory In mathematics, operator theory is the study of linear operators on function spaces, beginning with differential operators and integral operators. The operators may be presented abstractly by their characteristics, such as bounded linear operators ...

and

functional analysis Functional analysis is a branch of mathematical analysis, the core of which is formed by the study of vector spaces endowed with some kind of limit-related structure (e.g. Inner product space#Definition, inner product, Norm (mathematics)#Defini ...

, in particular linear operators and

integral equation In mathematics, integral equations are equations in which an unknown Function (mathematics), function appears under an integral sign. In mathematical notation, integral equations may thus be expressed as being of the form: f(x_1,x_2,x_3,...,x_n ; ...

Biography

Gohberg was born in Tarutyne to parents Tsudik and Haya Gohberg. His father owned a small typography shop and his mother was a midwife. The young Gohberg studied in a Hebrew school in Taurtyne and then a Romanian school in

Orhei Orhei (; Yiddish ''Uriv'' – אוריװ), also formerly known as Orgeev (russian: Орге́ев), is a city, municipality and the administrative centre of Orhei District in the Moldova, Republic of Moldova, with a population of 21,065. Orhei ...

, where he was influenced by the tutelage of Modest Shumbarsky, a student of the renowned topologist

Karol Borsuk Karol Borsuk (May 8, 1905 – January 24, 1982) was a Polish mathematician. His main interest was topology, while he obtained significant results also in functional analysis. Borsuk introduced the theory of '' absolute retracts'' (ARs) and ''abs ...

. He studied at the Kyrgyz Pedagogical Institute in

Bishkek Bishkek ( ky, Бишкек), ), formerly Pishpek and Frunze, is the capital and largest city of Kyrgyzstan. Bishkek is also the administrative centre of the Chüy Region. The region surrounds the city, although the city itself is not part of ...

and the University of Chişinău, completed his doctorate at

Leningrad University Saint Petersburg State University (SPBU; russian: Санкт-Петербургский государственный университет) is a public research university in Saint Petersburg, Russia. Founded in 1724 by a decree of Peter the G ...

on a thesis advised by

Mark Krein Mark Grigorievich Krein ( uk, Марко́ Григо́рович Крейн, russian: Марк Григо́рьевич Крейн; 3 April 1907 – 17 October 1989) was a Soviet mathematician, one of the major figures of the Soviet school of fu ...

(1954), and attended the

University of Moscow M. V. Lomonosov Moscow State University (MSU; russian: Московский государственный университет имени М. В. Ломоносова) is a public research university in Moscow, Russia and the most prestigious ...

for his

habilitation Habilitation is the highest university degree, or the procedure by which it is achieved, in many European countries. The candidate fulfills a university's set criteria of excellence in research, teaching and further education, usually including a ...

degree. Gohberg joined the faculty at Teacher's college in

Soroki Soroca (russian: link=no, Сороки, Soroki, uk, Сороки, Soroky, pl, Soroki, yi, סאָראָקע ''Soroke'') is a city and municipality in Moldova, situated on the Dniester River about north of Chișinău. It is the administrative ...

, at the teachers college in

Bălți Bălți (; russian: Бельцы, , uk, Бєльці, , yi, בעלץ ) is a city in Moldova. It is the second largest city in terms of population, area and economic importance, after Chișinău. The city is one of the five Moldovan municipalit ...

before returning to Chişinău where he was elected into the Academy of Sciences and also being appointed head of

at University of Chişinău (1964–73). After moving to

, Israel joined

Tel Aviv University Tel Aviv University (TAU) ( he, אוּנִיבֶרְסִיטַת תֵּל אָבִיב, ''Universitat Tel Aviv'') is a public research university in Tel Aviv, Israel. With over 30,000 students, it is the largest university in the country. Locate ...

(1974) and was at the

Weizmann Institute The Weizmann Institute of Science ( he, מכון ויצמן למדע ''Machon Vaitzman LeMada'') is a public research university in Rehovot, Israel, established in 1934, 14 years before the State of Israel. It differs from other Israeli univ ...

at Rehovot. Since then he also had positions at

Vrije Universiteit The Vrije Universiteit Amsterdam (abbreviated as ''VU Amsterdam'' or simply ''VU'' when in context) is a public research university in Amsterdam, Netherlands, being founded in 1880. The VU Amsterdam is one of two large, publicly funded research ...

Amsterdam Amsterdam ( , , , lit. ''The Dam on the River Amstel'') is the Capital of the Netherlands, capital and Municipalities of the Netherlands, most populous city of the Netherlands, with The Hague being the seat of government. It has a population ...

(1983), as well as at

University of Calgary The University of Calgary (U of C or UCalgary) is a public research university located in Calgary, Alberta, Canada. The University of Calgary started in 1944 as the Calgary branch of the University of Alberta, founded in 1908, prior to being ins ...

and

University of Maryland, College Park The University of Maryland, College Park (University of Maryland, UMD, or simply Maryland) is a public land-grant research university in College Park, Maryland. Founded in 1856, UMD is the flagship institution of the University System of Mary ...

. He founded the ''Integral equations and operator theory'' journal (1983). Gohberg was the visionary and driving force of the

International Workshop on Operator Theory and its Applications International Workshop on Operator Theory and its Applications (IWOTA) was started in 1981 to bring together mathematicians and engineers working in operator theoretic side of functional analysis and its applications to related fields. These inc ...

, or IWOTA, starting with its first meeting on August 1, 1981. He became a lifetime president of the IWOTA Steering Committee and a founder of the ''Springer'' / ''Birkhäuser Verlag'' book series ''Operator Theory: Advances and Applications (OTAA)''. Gohberg was awarded the

Humboldt Prize The Humboldt Prize, the Humboldt-Forschungspreis in German, also known as the Humboldt Research Award, is an award given by the Alexander von Humboldt Foundation of Germany to internationally renowned scientists and scholars who work outside of G ...

in 1992. He received honorary doctorates from the

Darmstadt University of Technology Darmstadt () is a city in the state of Hesse in Germany, located in the southern part of the Rhine-Main-Area (Frankfurt Metropolitan Region). Darmstadt has around 160,000 inhabitants, making it the fourth largest city in the state of Hesse a ...

in 1997; from the

Vienna University of Technology TU Wien (TUW; german: Technische Universität Wien; still known in English as the Vienna University of Technology from 1975–2014) is one of the major universities in Vienna, Austria. The university finds high international and domestic recogn ...

in 2001; from Universitatea de Vest din Timişoara in 2002; from Universitatea de Stat din Moldova, Chişinău, Moldova in 2002; from Universitatea de Stat "Alecu Russo" din Balti, Balti, Moldova in 2002; and from Technion, June 2008. He also was awarded the M.G. Krein Prize of the Ukrainian Academy of Sciences in 2008, and was elected SIAM Fellow in 2009. He died in

Ra'anana Ra'anana ( he, רַעֲנָנָּה, lit. "Fresh") is a city in the southern Sharon Plain of the Central District of Israel. It was founded in 1922 as an American-Jewish settlement, 1 km south of the village of Tabsur, where an important ...

in 2009.

Publications

Gohberg has authored near five hundred articles in his field. Books, a selection: * 1986. ''Invariant subspaces of matrices with applications''. With Peter Lancaster, and Leiba Rodman. . Vol. 51. SIAM, 1986. * 2003. ''Basic classes of linear operators.'' With

Rien Kaashoek Marinus Adriaan "Rien" Kaashoek (born 10 November 1937) is a Dutch mathematician, and Emeritus Professor Analysis and Operator Theory at the Vrije Universiteit in Amsterdam. Biography Born in Ridderkerk, Kaashoek has studied mathematics at the L ...

and Seymour Goldberg. Springer, 2003. * 2005. ''Convolution equations and projection methods for their solution. Izrailʹ'. With Aronovich Felʹdman. Vol. 41. AMS Bookstore. * 2009. ''Matrix polynomials''. With Peter Lancaster, and Leiba Rodman. Vol. 58. SIAM, 2009. Articles, a selection: * Gohberg, Israel C., and Mark Grigorʹevich Kreĭn. Introduction to the theory of linear nonselfadjoint operators in Hilbert space. Vol. 18. American Mathematical Soc., 1969. * *

References

External links

pictures of Gohberg

Death Notice in Hebrew
{{DEFAULTSORT:Gohberg, Israel 1928 births 2009 deaths People from Odesa Oblast Moldovan Jews Soviet Jews Soviet emigrants to Israel Israeli people of Moldovan-Jewish descent Israeli mathematicians Jewish scientists Soviet mathematicians Saint Petersburg State University alumni Tel Aviv University faculty University of Calgary faculty University of Maryland, College Park faculty Members of the Royal Netherlands Academy of Arts and Sciences Fellows of the Society for Industrial and Applied Mathematics