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 |
$R = \mathbb{F}_p$. | $R = \mathbb{F}_p$. | ||
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[[Category:Exercises]] | [[Category:Exercises]] | ||
| − | [[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
.
