Timeline for When is a crossed-product algebra a division algebra?
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| Feb 23, 2016 at 23:03 | comment | added | Aurel | A sufficient condition is that the cocycle has order $n$, where $n$ is the order of $G$ (and the degree of the corresponding algebra). This condition is also necessary over local and global fields or if $n$ is squarefree, but not in general. | |
| Feb 11, 2016 at 12:21 | comment | added | user1688 | I presume you have checked Chapters 14ff in Pierce's book on Associative Algebras? | |
| Feb 11, 2016 at 11:06 | history | asked | Steffen Kionke | CC BY-SA 3.0 |