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math.AC2021

Projective Closure of Affine Monomial Curves II

Joydip Saha, Indranath Sengupta, Pranjal Srivastava

In this paper our aim is twofold. First, we introduce the notion of star gluing of numerical semigroups and show that arithmetically Cohen-Macaulay and Gorenstein properties of the…

math.AC2021

The -number of Monomial Ideals

Kamalesh Saha, Indranath Sengupta

We generalize some results of -number for arbitrary monomial ideals by showing that the -number of an arbitrary monomial ideal is the same as the $\mathrm{v…

math.AC2021

Affine semigroups of maximal projective dimension

Om Prakash Bhardwaj, Kriti Goel, Indranath Sengupta

We generalize the notion of symmetric semigroups, pseudo symmetric semigroups, and row factorization matrices for pseudo Frobenius elements of numerical semigroups to the case of s…

math.AC2021

Colon structure of associated primes of monomial ideals

Ambhore Siddhi Balu, Indranath Sengupta

We find an explicit expression of the associated primes of monomial ideals as a colon by an element , using the unique irredundant irreducible decomposition whose irreducible co…

math.AC2021

On Row-Factorization relations of certain numerical semigroups

Om Prakash Bhardwaj, Kriti Goel, Indranath Sengupta

Let be a numerical semigroup minimally generated by an almost arithmetic sequence. We give a description of a possible row-factorization $(\RF)$ matrix for each pseudo-Frobeniu…

math.AC2021

ASL structures of some quadrics

Joydip Saha, Indranath Sengupta

Let be a field and , denote matrices such that, the entries of are either indeterminates over or and the entries of are indeterminates over which are…