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5 votes
0 answers
107 views

Size of minimal generating set of ideal over Laurent polynomial ring

Recently in attacking a problem in algebraic topology relating to the construction of stably-free non-free modules over integral group rings I’ve noticed that it is often fairly easy to reduce to ...
William Thomas's user avatar
3 votes
2 answers
246 views

Explicit description of transfer for $K_1$

Let $R$ be a commutative regular ring and let $s \in R$ be an element such that $R / s$ is also regular. Then we have a long exact localization sequence $$ \ldots \rightarrow K_i(R/s) \rightarrow K_i(...
Daniel Schäppi's user avatar