Closure finiteness descends along a finite extension `O → Oδ`: the two integral closures coincide, and finite over `Oδ` finite over `O` is finite over `O`.

Initializing...

Closure finiteness descends along a finite extension `O → Oδ`: the two integral closures coincide, and finite over `Oδ` finite over `O` is finite over `O`. · Prove2Me