Lattices generated by skeletons of reflexive polytopes
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generatedlatticepointsreflexivelatticespolytopesskeletonsalready
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Lattices generated by lattice points in skeletons of reflexive polytopes are essential in determining the fundamental group and integral cohomology of Calabi-Yau hypersurfaces. Here we prove that the lattice generated by all lattice points in a reflexive polytope is already generated by lattice points in codimension two faces. This answers a question of J. Morgan.
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