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1. • CommentRowNumber1.
   • CommentAuthorUrs
   • CommentTimeOct 29th 2022
   • PermaLink
   Author: Urs
   Format: MarkdownItexadded pointer to: * [[Johannes Huebschmann]], *On the history of Lie brackets, crossed modules, and Lie-Rinehart algebras* &lbrack;[arXiv:2208.02539](https://arxiv.org/abs/2208.02539)&rbrack; <a href="https://ncatlab.org/nlab/revision/diff/differential+crossed+module/9">diff</a>, <a href="https://ncatlab.org/nlab/revision/differential+crossed+module/9">v9</a>, <a href="https://ncatlab.org/nlab/show/differential+crossed+module">current</a>

   added pointer to:

   • Johannes Huebschmann, On the history of Lie brackets, crossed modules, and Lie-Rinehart algebras [arXiv:2208.02539]

   diff, v9, current

2. • CommentRowNumber2.
   • CommentAuthorUrs
   • CommentTimeSep 4th 2024
   • PermaLink
   Author: Urs
   Format: MarkdownItexadded the original reference: * [[Christian Kassel]], [[Jean-Louis Loday]]: appendix of: *Extensions centrales d'algèbres de Lie*, Annales de l'Institut Fourier, **32** 4 (1982) 119-142 &lbrack;[numdam:AIF_1982__32_4_119_0](http://www.numdam.org/item/?id=AIF_1982__32_4_119_0)&rbrack; <a href="https://ncatlab.org/nlab/revision/diff/differential+crossed+module/13">diff</a>, <a href="https://ncatlab.org/nlab/revision/differential+crossed+module/13">v13</a>, <a href="https://ncatlab.org/nlab/show/differential+crossed+module">current</a>

   added the original reference:

   • Christian Kassel, Jean-Louis Loday: appendix of: Extensions centrales d’algèbres de Lie, Annales de l’Institut Fourier, 32 4 (1982) 119-142 [numdam:AIF_1982__32_4_119_0]

   diff, v13, current

3. • CommentRowNumber3.
   • CommentAuthorUrs
   • CommentTimeDec 2nd 2024
   • PermaLink
   Author: Urs
   Format: MarkdownItexadded pointer to * [[Friedrich Wagemann]]: *On Lie algebra crossed modules*, Comm. Algebra **34** 5 (2006) 1699-1722 &lbrack;[arXiv:math/0611375](https://arxiv.org/abs/math/0611375), [doi:10.1080/00927870500542705](https://doi.org/10.1080/00927870500542705)&rbrack; <a href="https://ncatlab.org/nlab/revision/diff/differential+crossed+module/14">diff</a>, <a href="https://ncatlab.org/nlab/revision/differential+crossed+module/14">v14</a>, <a href="https://ncatlab.org/nlab/show/differential+crossed+module">current</a>

   added pointer to

   • Friedrich Wagemann: On Lie algebra crossed modules, Comm. Algebra 34 5 (2006) 1699-1722 [arXiv:math/0611375, doi:10.1080/00927870500542705]

   diff, v14, current