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This paper considers the decomposition of a coincidence isometry of a lattice into coincidence reflections and the use of decomposition to study the structure of the coincidence symmetry group.
Keywords: coincidence symmetry groups.
short communications
This short communication discusses the connections between sublattice counting methods and their relation to Gaussian binomials.
research papers
Explicit formulas for the indices of certain coincidence isometries of the hypercubic lattice are obtained by analyzing the normal form of a rational orthogonal matrix.
