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Tuesday, December 6, 2022
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December 6, 2022 -Positive semigroups in lattices and totally real number fields (Lenny Fukshansky, CMC)
Positive semigroups in lattices and totally real number fields (Lenny Fukshansky, CMC)
Let L be a full-rank lattice in R^n and write L+ for the semigroup of all vectors with nonnegative coordinates in L. We call a basis X for L positive if it is contained in L+. There are infinitely many such bases, and each of them spans a conical semigroup S(X) consisting of all nonnegative […]
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