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A theorem on spherically complete valued abelian groups - MaRDI portal

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A theorem on spherically complete valued abelian groups

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Publication:6502095

arXivmath/9707233MaRDI QIDQ6502095

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Abstract: 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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