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https://hdl.handle.net/10316/89426| Title: | The Nine Lemma and the push forward construction for special Schreier extensions of monoids with operations | Authors: | Martins-Ferreira, Nelson Montoli, Andrea Sobral, Manuela |
Keywords: | Monoids with operations; Special Schreier extension; Nine Lemma; Push forward; Baer sum | Issue Date: | 2018 | Publisher: | Springer Verlag | Project: | CMUC-UID/MAT/00324/2013 | metadata.degois.publication.title: | Semigroup Forum | metadata.degois.publication.volume: | 97 | Abstract: | We show that the Nine Lemma holds for special Schreier extensions of monoids with operations. This fact is used to obtain a push forward construction for special Schreier extensions with abelian kernel. This construction permits to give a functorial description of the Baer sum of such extensions. | URI: | https://hdl.handle.net/10316/89426 | DOI: | 10.1007/s00233-018-9962-1 | Rights: | embargoedAccess |
| Appears in Collections: | I&D CMUC - Artigos em Revistas Internacionais |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| push forward Schreier revised.pdf | 328.08 kB | Adobe PDF | View/Open |
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