Abstract
Recent results on the Gupta representation of the unique stem cover of a free Bieberbach group lead to explicite determination of its Schur multiplicator. The aim of this note is to estimate the free-abelian rank of the Schur multiplicator, using only the 8-term Eckmann-Hilton-Stammbach exact homology sequence induced by the free Bieberbach group modulo its nontrivial center. The note ends with a discussion about the structure of torsion-free Bieberbach groups constructed by S.Rosset.
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Tan, E.T. Remarks on free Bieberbach groups. Manuscripta Math 60, 477–486 (1988). https://doi.org/10.1007/BF01258665
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DOI: https://doi.org/10.1007/BF01258665