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Group Extensions and Hall Polynomials
G. V. Voskresenskaya Samara State University
Abstract:
In this paper, we give two proofs of a formula containing the numbers of automorphisms of an Abelian group, of its subgroups, and of its quotient groups. The first proof is based on the use of the theory of Hall polynomials, while the second one uses extension theory for Abelian groups.
Received: 06.01.2004
Citation:
G. V. Voskresenskaya, “Group Extensions and Hall Polynomials”, Mat. Zametki, 78:2 (2005), 180–185; Math. Notes, 78:2 (2005), 164–169
Linking options:
https://www.mathnet.ru/eng/mzm2586https://doi.org/10.4213/mzm2586 https://www.mathnet.ru/eng/mzm/v78/i2/p180
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