Relative Brauer group is closed? Matrix ring/tensor product question.
Hi there, any reference I have defines the RB group as a subgroup of a Brauer group, so I just wanted to check that my reasoning highlighted below is sound. My tensor product knowledge is a little rusty...
Last edited by percimbe; May 6th 2010 at 03:36 AM.
Hi there, any reference I have defines the RB group as a subgroup of a Brauer group, so I just wanted to check that my reasoning highlighted below is sound. My tensor product knowledge is a little rusty...
that highlighted part is correct. you should remember this useful identity that for any two K-algebras we have
the problem in your proof is somewhere else, where you claimed that how would you prove this?