Results 21 to 30 of about 177 (175)

Minimal Systems of Binomial Generators for the Ideals of Certain Monomial Curves

open access: yesMathematics, 2021
Let a,b and n>1 be three positive integers such that a and ∑j=0n−1bj are relatively prime. In this paper, we prove that the toric ideal I associated to the submonoid of N generated by {∑j=0n−1bj}∪{∑j=0n−1bj+a∑j=0i−2bj∣i=2,…,n} is determinantal. Moreover,
Manuel B. Branco   +2 more
doaj   +1 more source

Generic Cohen-Macaulay Monomial Ideals [PDF]

open access: yesAnnals of Combinatorics, 2004
18 pages, 8 ...
Jarrah, Abdul Salam   +1 more
openaire   +2 more sources

Extremal Betti Numbers of t-Spread Strongly Stable Ideals

open access: yesMathematics, 2019
Let K be a field and let S = K [ x 1 , ⋯ , x n ] be a polynomial ring over K. We analyze the extremal Betti numbers of special squarefree monomial ideals of S known as the t-spread strongly stable ideals, where t is an integer ≥ 1
Luca Amata, Marilena Crupi
doaj   +1 more source

Free Resolutions and Generalized Hamming Weights of Binary Linear Codes

open access: yesMathematics, 2022
In this work, we explore the relationship between the graded free resolution of some monomial ideals and the Generalized Hamming Weights (GHWs) of binary codes.
Ignacio García-Marco   +3 more
doaj   +1 more source

Monomial ideals of minimal depth

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2013
Let S be a polynomial algebra over a field. We study classes of monomial ideals (as for example lexsegment ideals) of S having minimal depth. In particular, Stanley's conjecture holds for these ideals.
Ishaq Muhammad
doaj   +1 more source

Symbolic Powers of Monomial Ideals [PDF]

open access: yesProceedings of the Edinburgh Mathematical Society, 2016
AbstractWe investigate symbolic and regular powers of monomial ideals. For a square-free monomial ideal I ⊆ 𝕜[x0, … , xn] we show that for all positive integers m, t and r, where e is the big-height of I and . This captures two conjectures (r = 1 and r = e): one of Harbourne and Huneke, and one of Bocci et al. We also introduce the symbolic polyhedron
Cooper, Susan M.   +3 more
openaire   +2 more sources

Multiplicities of monomial ideals

open access: yesJournal of Algebra, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Herzog, Jürgen, Srinivasan, Hema
openaire   +2 more sources

Divisors on graphs, Connected flags, and Syzygies [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2013
We study the binomial and monomial ideals arising from linear equivalence of divisors on graphs from the point of view of Gröbner theory. We give an explicit description of a minimal Gröbner basis for each higher syzygy module.
Fatemeh Mohammadi, Farbod Shokrieh
doaj   +1 more source

Integer sequences and monomial ideals

open access: yesProceedings - Mathematical Sciences, 2021
Let $\mathfrak{S}_n$ be the set of all permutations of $[n]=\{1,\ldots,n\}$ and let $W$ be the subset consisting of permutations $σ\in \mathfrak{S}_n$ avoiding 132 and 312-patterns. The monomial ideal $I_W = \left\langle \mathbf{x}^σ = \prod_{i=1}^n x_i^{σ(i)} : σ\in W \right\rangle $ in the polynomial ring $R = k[x_1,\ldots,x_n]$ over a field $k$ is ...
Kumar, Chanchal, Roy, Amit
openaire   +2 more sources

Algebraic Analysis of Variants of Multi-State k-out-of-n Systems

open access: yesMathematics, 2021
We apply the algebraic reliability method to the analysis of several variants of multi-state k-out-of-n systems. We describe and use the reliability ideals of multi-state consecutive k-out-of-n systems with and without sparse, and show the results of ...
Patricia Pascual-Ortigosa   +1 more
doaj   +1 more source

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