Equivalent Expressions of Direct Sum Decomposition of Groups1

In this article, the equivalent expressions of the direct sum decomposition of groups are mainly discussed. In the first section, we formalize the fact that the internal direct sum decomposition can be defined as normal subgroups and some of their properties. In the second section, we formalize an e...

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Bibliographic Details
Main Authors: Nakasho Kazuhisa, Okazaki Hiroyuki, Yamazaki Hiroshi, Shidama Yasunari
Format: Article
Language:English
Published: Sciendo 2015-03-01
Series:Formalized Mathematics
Subjects:
Online Access:https://doi.org/10.2478/forma-2015-0006