If His a G-crossed module, the set of derivations of Gin H is a monoid under the Whitehead product of derivations. We interpret the Whitehead product using the correspondence between crossed modules and internal groupoids in the category of groups. Working in the general context of internal groupoids in a finitely complete category, we relate derivations to holomorphisms, translations, affine transformations, and to the embedding category of a groupoid. (C) 2007 Elsevier B.V. All rights reserved.
|Number of pages||18|
|Journal||Journal of Pure and Applied Algebra|
|Publication status||Published - 2008|
All Science Journal Classification (ASJC) codes
- Algebra and Number Theory