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regular morphims Regular morphisms and formal power series
Let $A$ be a local noetherian ring. When do we have that (besides when$A$ is excellent):
$Spec(A[[t]])\rightarrow Spec(A[t])$
is do we have that $\operatorname{Spec}(A[[t]])\rightarrow \operatorname{Spec}(A[t])$ is regular?
regular morphims and formal power series
Let $A$ be a local noetherian ring. When do we have that (besides $A$ excellent):
$Spec(A[[t]])\rightarrow Spec(A[t])$
is regular?
Regular morphisms and formal power series
Let $A$ be a local noetherian ring. When (besides when$A$ is excellent) do we have that $\operatorname{Spec}(A[[t]])\rightarrow \operatorname{Spec}(A[t])$ is regular?
