A theorem on spherically complete valued abelian groups

Details A theorem on spherically complete valued abelian groups A theorem on spherically complete valued abelian groups

1997-07-30

arxiv.org/abs/math/9707233v1

Mathematics

Rings and Algebras

Scientific paper

We give a criterion for a group homomorphism on a valued abelian group to be surjective and to preserve spherical completeness. We apply this to give a criterion for the existence of integration on a valued differential field. Further, we give a criterion for a sum of spherically complete subgroups of a valued abelian group to be spherically complete. This in turn can be used to determine elementary properties of power series fields in positive characteristic.

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