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math.AC2020
Principal Matrices of Numerical Semigroups
Papri Dey, Hema Srinivasan
Principal matrices of a numerical semigroup of embedding dimension n are special types of matrices over integers of rank . We show that such matrices and e…
math.AG2020
The orthostochastic variety
Justin Chen, Papri Dey
Orthostochastic matrices are the entrywise squares of orthogonal matrices, and naturally arise in various contexts, including notably definite symmetric determinantal representatio…