DERIVATION AND ACTOR OF CROSSED POLYMODULES
Journal of the Korean Society of Mathematical Education Series B: The Pure and Applied Mathematics / Journal of the Korean Society of Mathematical Education Series B: The Pure and Applied Mathematics, (P)1226-0657; (E)2287-6081
2018, v.25 no.3, pp.203-218
https://doi.org/10.7468/jksmeb.2018.25.3.203
Davvaz, Bijan
Alp, Murat
Davvaz,,
B.
, &
Alp,,
M.
(2018). DERIVATION AND ACTOR OF CROSSED POLYMODULES. Journal of the Korean Society of Mathematical Education Series B: The Pure and Applied Mathematics, 25(3), 203-218, https://doi.org/10.7468/jksmeb.2018.25.3.203
Abstract
An old result of Whitehead says that the set of derivations of a group with values in a crossed G-module has a natural monoid structure. In this paper we introduce derivation of crossed polymodule and actor crossed polymodules by using Lue's and Norrie's constructions. We prove that the set of derivations of a crossed polygroup has a semihypergroup structure with identity. Then, we consider the polygroup of invertible and reversible elements of it and we obtain actor crossed polymodule.
- keywords
-
action,
crossed module,
polygroup,
crossed polymodule,
derivation,
fundamental relation