Abstract
We show that the Voronoi conjecture is true for parallelohedra with simply connected \(\delta \)-surfaces. That is, we show that if the boundary of parallelohedron \(P\) remains simply connected after removing closed nonprimitive faces of codimension 2, then \(P\) is affinely equivalent to a Dirichlet–Voronoi domain of some lattice. Also, we construct the \(\pi \)-surface associated with a parallelohedron and give another condition in terms of a homology group of the constructed surface. Every parallelohedron with a simply connected \(\delta \)-surface also satisfies the condition on the homology group of the \(\pi \)-surface.
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Acknowledgments
The authors would like to thank Professor Nikolai Dolbilin and Professor Robert Erdahl for fruitful discussions and helpful comments and remarks. The first author is supported by RScF project 14-11-00414.
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Garber, A., Gavrilyuk, A. & Magazinov, A. The Voronoi Conjecture for Parallelohedra with Simply Connected \(\delta \)-Surfaces. Discrete Comput Geom 53, 245–260 (2015). https://doi.org/10.1007/s00454-014-9660-z
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DOI: https://doi.org/10.1007/s00454-014-9660-z