Abstract
We compare relative cohomology theories arising from using different proper resolutions of modules. Criteria for the vanishing of such distinctions are given in certain cases, and we show that this is related to the generalized Tate cohomology theory. We also demonstrate that the two balance properties admitted by the two different cohomology theories are actually equivalent in some cases. As applications, we recover many results obtained earlier in various contexts. At last we investigate derived functors with respect to the Auslander and Bass classes.
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Acknowledgements
This work was partially supported by the National Natural Science Foundation of China (Grant No. 11571165). The authors would like to give many thanks to the referee for many useful comments and suggestions.
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Presented by Henning Krause.
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Yu, B., Zhu, X. & Zhou, Y. Relative Cohomology and Generalized Tate Cohomology. Algebr Represent Theor 20, 1571–1592 (2017). https://doi.org/10.1007/s10468-017-9702-3
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DOI: https://doi.org/10.1007/s10468-017-9702-3
Keywords
- Auslander class
- Balance
- Bass class
- Generalized Tate cohomology
- Gorenstein modules
- Relative cohomology
- Semidualizing