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Pentactions and action representability in the category of reduced groups with action

  • Tamar Datuashvili ORCID logo EMAIL logo and Tunçar Şahan ORCID logo
Published/Copyright: November 30, 2022
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Abstract

A notion of pentaction of any object in the category 𝐫𝐆𝐫 of reduced groups with action is introduced. The operations are defined in the set 𝖯𝖾𝗇𝗍𝖺𝖼𝗍 ( A ) of pentactions of an object A of 𝐫𝐆𝐫 . It is proved that if an object A is perfect with zero weak stabilizer in the sense defined in this paper, then 𝖯𝖾𝗇𝗍𝖺𝖼𝗍 ( A ) is an object of 𝐫𝐆𝐫 , it has a derived action on A, the object A is action representable and 𝖯𝖾𝗇𝗍𝖺𝖼𝗍 ( A ) represents all actions on A.

MSC 2010: 08A99; 08C05; 22F05

Acknowledgements

It was the second author’s idea to define and describe actions in the category of groups with action. It was stimulating and then interesting to search such a subcategory in this category, where it would be possible to investigate action representability of certain objects.

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Received: 2022-04-14
Revised: 2022-07-04
Accepted: 2022-07-26
Published Online: 2022-11-30
Published in Print: 2023-04-01

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