Idempotents in group rings (Ex)
From Manifold Atlas
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(Created page with "<wikitex>; Let $p$ be a prime. Find all them idempotents in the group rings $R[\Zz/p|$ for $R = \Zz$, $R = \Cc$ and $R = \mathbb{F}_p$. </wikitex> == References == {{#RefList:...") |
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− | Let $p$ be a prime. Find all | + | Let $p$ be a prime. Find all the idempotents in the group rings $R[\Zz/p|$ for $R = \Zz$, $R = \Cc$ and |
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− | [[Category:Exercises | + | [[Category:Exercises with solution]] |
Latest revision as of 20:39, 28 August 2013
Let be a prime. Find all the idempotents in the group rings for , and .