Keywords
- Direct Summand
- Cohomology Class
- Projective Cover
- Essential Extension
- Split Extension
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Gruenberg, K.W. (1970). Extension categories : General theory. In: Cohomological Topics in Group Theory. Lecture Notes in Mathematics, vol 143. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0059171
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DOI: https://doi.org/10.1007/BFb0059171
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