Editing Julian Sochocki

{{Short description|Polish-Russian mathematician (1842–1927)}}
{{Infobox scientist
| name              = Julian Sochocki
| image             = Sokhotsky.jpg
| image_size        = 
| image_upright     = 
| alt               = 
| caption           = Sochocki, before 1927
| birth_date        = {{birth date|1842|2|2}}
| birth_place       = [[Warsaw]], [[Congress Poland]]
| death_date        = {{Death date and age|1927|12|14|1842|2|2}}
| death_place       = [[Saint Petersburg|Leningrad]], [[Soviet Union]]
| nationality       = Polish
| fields            = [[Mathematics]]
| workplaces        = 
| alma_mater        = [[Saint Petersburg State University|St Petersburg University]]
| thesis_title      = 
| thesis_url        = 
| thesis_year       = 
| doctoral_advisor  =
| doctoral_students = 
| known_for         = [[Sokhotski–Plemelj theorem]]<br />[[Casorati&ndash;Sokhotski&ndash;Weierstrass theorem]]<br />[[number theory]]
| awards            = 
| website = 
}}
'''Julian Karol Sochocki''' ({{langx|pl|Julian Karol Sochocki}}; {{langx|ru|Юлиан Васильевич Сохоцкий}}; February 2, 1842, in [[Warsaw]], [[Congress Poland]], [[Russian Empire]] – December 14, 1927, in [[Saint Petersburg|Leningrad]], [[Soviet Union]]) was a [[Polish people|Polish]]-Russian [[mathematician]].<ref name=Steffens>{{cite book|doi=10.1007/0-8176-4475-X|mr=2190312|last=Steffens|first=Karl-Georg|editor1-first=George A|editor1-last=Anastassiou|title=The history of approximation theory. From Euler to Bernstein|publisher=Birkhäuser Boston, Inc.|location=Boston, MA|year=2006|isbn=978-0-8176-4353-9|pages=111&ndash;113}}</ref>  His name is sometimes transliterated from Russian in several different ways (e.g. Sokhotski or Sochotski).<ref name=Steffens/>

==Life and work==

Sochocki was born in [[Warsaw]] under the [[Russia]]n domination to a Polish family, where he attended state gymnasium. In 1860 he registered at the physico-mathematical department of [[Saint Petersburg State University|St Petersburg University]]. His study there was interrupted for the period 1860–1865 because of his involvement with Polish patriotic movement: he had to return to Warsaw to escape prosecution.<ref name=Steffens/>

In 1866 he graduated from the Department of Physics and Mathematics at the [[Saint Petersburg State University|University of Saint Petersburg]]. In 1868 he received his master's degree and in 1873 his [[Doctor of Philosophy|doctorate]]. His master's dissertation, practically the first text in Russian mathematical literature on [[Augustin Louis Cauchy|Cauchy]] method of [[residue theorem|residues]], was published in 1868. The dissertation itself contains many original grasps, which have been also ascribed to other mathematicians. His doctoral thesis contains the famous [[Sokhotski–Plemelj theorem]].

From 1868 Sochotcki lectured at the St Petersburg university, first as the "privat-docent", from 1882 as an ordinary professor, and from 1893 as a merited professor. In 1894 he was elected corresponding member of the [[Polish Academy of Learning|Polish Academy of Arts and Sciences]].<ref>{{cite book|title=Rocznik dem Akademii Umiejętności 1895/6|publisher=Spółki Wydawniczej Polskiej|year=1896|location=Krakow|page=28}}</ref>

Sochocki died on December 14, 1927, in a nursing home in [[Leningrad]].

Sochocki is mainly remembered for the [[Casorati&ndash;Sokhotski&ndash;Weierstrass theorem]] and for the [[Sokhotski&ndash;Plemelj theorem]].

==Selected publications==
* ''Теорiя интегральныхъ вычетовъ с нѣкоторыми приложенiями'' (''A Theory of Integral Residues with Some Applications'') (1868)
* ''Объ определенныхъ интегралахъ и функцiяхъ употребляемыхъ при разложенiяхъ въ ряды'' (''On Definite Integrals and Functions Used in Series Expansions'') (1873)
* ''О суммахъ Гаусса и о законе взаимности символа Лежандра'' (''On Gauss Sums and the Reciprocity Law of the Legendre Symbol'') (1877)
* ''Высшая алгебра'' (''Higher Algebra'') (St. Petersburg, 1882)
* ''Теорiя чиселъ'' (''Number Theory'') (St. Petersburg, 1888)
* ''Начало общего наибольшего делителя въ применении к теорiи делимости алгебраическихъ чиселъ'' (''The Principle of the Greatest Common Divisor Applied to Divisibility Theory of Algebraic Numbers'') (1893), {{jfm|25.0300.01}}, {{jfm|25.0297.04}}

==Notes==
{{Reflist}}

==External links ==
* [http://www.mathsoc.spb.ru/pantheon/sokhotsk/b-e.html Yulian Vasilievich Sokhotski] (in Russian)
* {{DSB|first=A. P.|last= Youschkevitch|title= Yulian-Karl Vasilievich Sokhotski|url=http://www.encyclopedia.com/doc/1G2-2830904071.html}}
* {{MacTutor|id=Sokhotsky}}
* [https://zbmath.org/authors/?q=sochocki Julian Karol Sochocki] Zentralblatt profile

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{{DEFAULTSORT:Sokhotski, Yulian Vasilievich}}
[[Category:Number theorists]]
[[Category:Saint Petersburg State University alumni]]
[[Category:Russian people of Polish descent]]
[[Category:Scientists from Warsaw]]
[[Category:Polish mathematicians]]
[[Category:19th-century mathematicians from the Russian Empire]]
[[Category:20th-century Russian mathematicians]]
[[Category:1842 births]]
[[Category:1927 deaths]]