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Iwasawa theory
{{complex|date=February 2012}}
{{Orphan|date=February 2012}}
In [[number theory]], '''Iwasawa theory''' is a [[Galois module]] theory of [[ideal class group]]s, started by [[Kenkichi Iwasawa]], in the 1950s, as part of the theory of [[cyclotomic field]]s. In the early 1970s, [[Barry Mazur]] thought about generalizations of Iwasawa theory to Abelian Varieties. Later, in the early 90s, [[Ralph Greenberg]] has suggested an Iwasawa theory for [[motive (algebraic geometry)|motives]](contracted; show full)[[en:Iwasawa theory]]
[[es:Teoría de Iwasawa]]
[[fr:Théorie d'Iwasawa]]
[[it:Teoria di Iwasawa]]
[[he:תורת איווסווה]]
[[nl:Iwasawa-theorie]]
[[ja:岩澤理論]]
[[pt:Teoria de 
iIwasawa]]
[[fi:Iwasawan teoria]]
[[sv:Iwasawa-teori]]
[[zh:岩澤理論]]