Morphisms Between Formal Schemes
A morphism of locally noetherian formal schemes is a morphism of them as locally ringed spaces such that the induced map is a continuous homomorphism of topological rings for any affine open subset U.
f is said to be adic or is a -adic formal scheme if there exists an ideal of definition such that is an ideal of definition for . If f is adic, then this property holds for any ideal of definition.
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