Abstract
In this paper the “residual complex” is defined when a group and its subgroups act on a complex. With its aid a homological spectral sequence of group products is given. And the author makes a concentrated study of the structure of the residual complex and proves that it becomes a clear “step complex” if the group can be expressed as an amalgamated free product of its subgroups.
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Project supported by the National Natural Science Foundation of China
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Zunxian, L. A homological spectral sequence of group products. Acta Mathematica Sinica 8, 177–183 (1992). https://doi.org/10.1007/BF02629937
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DOI: https://doi.org/10.1007/BF02629937