| http://www.w3.org/ns/prov#value | - If I want to find out if $\sigma(h)=h$ for a cohomology class $h$, are there any options other than writing down the equations that define $C$ and $\sigma$ and trying to see explicitly if $\sigma(h)$ and $h$ belong to the same coset of $(k(C)^ imes)^n$?
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