Hammer

2014-01-16T20:03:03Z

209.152.44.30:

{{Infobox scientist
|name = Heisuke Hironaka
|image =
|image_size =
|birth_date = {{birth date and age|1931|04|09|df=y}}
|birth_place = Yuu-chō, Kuga-Gun, [[Yamaguchi, Yamaguchi|Yamaguchi]], Japan (modern-day [[Iwakuni, Yamaguchi]], Japan)
|death_date =
|death_place =
|nationality = [[Japan]]ese
|field = [[Mathematics]]
|work_institutions = [[Harvard University]] [[Columbia University]] [[Seoul National University]]
|alma_mater = Harvard University
|doctoral_advisor = [[Oscar Zariski]]
|doctoral_students = [[William Haboush]] [[Allen Tannenbaum]] [[Bernard Teissier]]
|known_for =
|prizes = [[Fields Medal]] (1970)
}}
{{nihongo|'''Heisuke Hironaka'''|広中平祐|Hironaka Heisuke|extra=born 9 April 1931}} is a [[Japan]]ese [[mathematician]]. He failed the entrance examination for [[Hiroshima University]] in Japan, but after one year he passed the entrance examination for [[Kyoto University]] in Japan. After completing his undergraduate studies at [[Kyoto University]], he received his [[Doctor of Philosophy|Ph.D.]] from [[Harvard]] while under the direction of [[Oscar Zariski]]. He won the [[Fields Medal]] in 1970.

He is celebrated for proving in 1964 that [[singular point of an algebraic variety|singularities of algebraic varieties]] admit [[resolution of singularities|resolutions]] in characteristic zero. This means that any [[algebraic variety]] can be replaced by (more precisely is [[birational equivalence|birationally equivalent]] to) a similar variety which has no singularities. He also introduced [[Hironaka's example]] showing that a deformation of Kähler manifolds need not be Kähler.

Hironaka was for many years a Professor of mathematics at [[Harvard University]] but currently lives in [[Japan]], where he is greatly respected and influential. He is also a professor of mathematics at [[Seoul National University]] in [[South Korea]].<ref>{{cite web |first=Naeun |last=Choi |url=http://www.useoul.edu/news/news0101_view.jsp?idx=128770 |title=Fields Medal recipient appointed as SNU Professor |publisher=Useoul.edu |date=2008-11-10 |accessdate=2009-05-14}}</ref> He has been active in raising funds for causes such as mathematical education. He is president of the [[University of Creation; Art, Music & Social Work]], a private university in [[Takasaki]], [[Gunma]], Japan.

He once wrote a paper under a pseudonym derived from [[Kobayashi Issa]], a famous Japanese haiku poet.<ref>{{cite journal
| last1 = Tráng | first1 = Lê Dũng
| last2 = Teissier | first2 = Bernard
| doi = 10.2977/prims/1210167324
| issue = 2
| journal = Publications of the Research Institute for Mathematical Sciences, Kyoto University
| mr = 2426345
| pages = 165–177
| title = On the mathematical work of Professor Heisuke Hironaka
| url = http://www.kurims.kyoto-u.ac.jp/~prims/pdf/44-2/44-2-8.pdf
| volume = 44
| year = 2008}}.</ref> The result is known as Issa's theorem in complex function theory.

Hironaka is married to [[Wakako Hironaka]], a politician, and they have two children.

== List of books available in English ==
* ''Formal functions and formal imbeddings'' / by Heisuke Hironaka and Hideyuki Matsumura (1967)
* ''On the characters <math>\nu</math> and <math>\tau</math> of singularities'' / by Heisuke Hironaka
* ''Introduction to the theory of infinitely near singular points'' / Heisuke Hironaka (1974)
* ''The theory of the maximal contact'' / José M. Aroca, Heisuke Hironaka and José L. Vicente (1975)
* ''Desingularization theorems'' / Jose M. Aroca, Heisuke Hironaka and Jose L. Vicente (1977)
* ''Geometric singularity theory'' / editors of the volume, Heisuke Hironaka, Stanisław Janeczko (2004)

== References ==
{{Reflist}}

== External links ==
* {{MathGenealogy |id=18752}}
* {{MacTutor Biography|id=Hironaka}}
* Jackson, Allyn; [http://www.ams.org/notices/200509/fea-hironaka.pdf Interview with Heisuke Hironaka]; ''Notices of the American Mathematical Society''; vol. 52, no. 9 (October 2005).

{{Fields medalists}}

{{Authority control|PND=|LCCN=n/81/75947|VIAF=108168030|SELIBR=}}

{{Persondata 
| NAME = Hironaka, Heisuke
| ALTERNATIVE NAMES =
| SHORT DESCRIPTION = Mathematician
| DATE OF BIRTH = 1931-04-09
| PLACE OF BIRTH = Yuu-chō, Kuga-Gun, [[Yamaguchi, Yamaguchi|Yamaguchi]] (modern-day [[Iwakuni, Yamaguchi]])
| DATE OF DEATH =
| PLACE OF DEATH =
}}
{{DEFAULTSORT:Hironaka, Heisuke}}
[[Category:1931 births]]
[[Category:20th-century mathematicians]]
[[Category:Algebraic geometers]]
[[Category:Fields Medalists]]
[[Category:Guggenheim Fellows]]
[[Category:Columbia University faculty]]
[[Category:Harvard University alumni]]
[[Category:Harvard University faculty]]
[[Category:Japanese mathematicians]]
[[Category:Kyoto University alumni]]
[[Category:Kyoto University faculty]]
[[Category:Living people]]
[[Category:Members of the French Academy of Sciences]]
[[Category:Foreign Members of the Russian Academy of Sciences]]
[[Category:Spouses of Japanese politicians]]
[[Category:Recipients of the Order of Culture]]
[[Category:Légion d'honneur recipients]]

formulasearchengine - User contributions [en]

Hammer