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2017 A note on the rank of $B\rm ext_A^1(G,A)$
Ulrich Albrecht
Rocky Mountain J. Math. 47(5): 1405-1413 (2017). DOI: 10.1216/RMJ-2017-47-5-1405

Abstract

The goal of this paper is to compare ranks of the divisible groups $Ext (G,A)$ and $B{\rm ext}_A^1(G,A)$ whenever~$G$ is a countable torsion-free $A$-solvable group and $A$ has a right hereditary endomorphism ring.

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Ulrich Albrecht. "A note on the rank of $B\rm ext_A^1(G,A)$." Rocky Mountain J. Math. 47 (5) 1405 - 1413, 2017. https://doi.org/10.1216/RMJ-2017-47-5-1405

Information

Published: 2017
First available in Project Euclid: 22 September 2017

MathSciNet: MR3705758
Digital Object Identifier: 10.1216/RMJ-2017-47-5-1405

Subjects:
Primary: 20K20 , 20K35 , 20K40

Keywords: Endomorphism ring , rank of $Ext $ , torsion-free abelian groups

Rights: Copyright © 2017 Rocky Mountain Mathematics Consortium

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Vol.47 • No. 5 • 2017
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