Regularity comparison of symbolic and ordinary powers of weighted oriented graphs

M Kumar, R Nanduri - arXiv preprint arXiv:2308.04705, 2023 - arxiv.org
In this paper, we compare the regularities of symbolic and ordinary powers of edge ideals of
weighted oriented graphs. For a weighted oriented graph $ D $, we give a lower bound for …

Powers of edge ideals of weighted oriented graphs with linear resolutions

A Banerjee, KK Das, S Selvaraja - Journal of Algebra and its …, 2023 - World Scientific
Let 𝒟=(V (𝒟), E (𝒟)) be a weighted oriented graph and I (𝒟) denote the corresponding edge
ideal. In this paper, we give a combinatorial characterization of I (𝒟) which has a linear …

Regularity and projective dimension of powers of edge ideal of the disjoint union of some weighted oriented gap-free bipartite graphs

G Zhu, L Xu, H Wang, J Zhang - Journal of Algebra and Its …, 2020 - World Scientific
In this paper, we provide some precise formulas for regularity of powers of edge ideal of the
disjoint union of some weighted oriented gap-free bipartite graphs. For the projective …

Regularity of powers of edge ideals of Cohen–Macaulay weighted oriented forests

M Kumar, R Nanduri - Journal of Algebraic Combinatorics, 2023 - Springer
In this paper, we explicitly give combinatorial formulas for the regularity of powers of edge
ideals, reg ( I ( D ) k ) \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} …

Algebraic properties of edge ideals of some vertex-weighted oriented cyclic graphs

H Wang, G Zhu, L Xu, J Zhang - Algebra Colloquium, 2021 - World Scientific
We provide some exact formulas for the projective dimension and regularity of edge ideals
associated to some vertex-weighted oriented cyclic graphs with a common vertex or edge …

The edge ideals of the join of some vertex weighted oriented graphs

Y Cui, G Zhu, X Wei - arXiv preprint arXiv:2209.06649, 2022 - arxiv.org
In this paper, we describe primary decomposition of the edge ideal of the join of some
graphs in terms of that information of the edge ideal of every weighted oriented graph …

Algebraic Properties of Powers of Edge Ideals of Vertex-Weighted Oriented Cycles

H Wang, G Zhu, L Xu - Algebra Colloquium, 2023 - World Scientific
Let t be any positive integer and I (C n) the edge ideal of a vertex-weighted oriented n-cycle
graph C n. We provide explicit formulas for the regularity and depth of I (C n) t. In particular …

Componentwise linearity of edge ideals of weighted oriented graphs

M Kumar, R Nanduri, K Saha - arXiv preprint arXiv:2309.16810, 2023 - arxiv.org
In this paper, we study the componentwise linearity of edge ideals of weighted oriented
graphs. We show that if $ D $ is a weighted oriented graph whose edge ideal $ I (D) $ is …

Regularity of powers of edge ideals of vertex-weighted oriented unicyclic graphs

G Zhu, H Wang, L Xu, J Zhang - arXiv preprint arXiv:1904.02305, 2019 - arxiv.org
In this paper we provide some exact formulas for the regularity of powers of edge ideals of
vertex-weighted oriented cycles and vertex-weighted unicyclic graphs. These formulas are …

Projective dimension and regularity of edge ideals of some vertex-weighted oriented -partite graphs

G Zhu, H Wang, L Xu, J Zhang - arXiv preprint arXiv:1904.04682, 2019 - arxiv.org
In this paper we provide some exact formulas for the projective dimension and the regularity
of edge ideals associated to three special types of vertex-weighted oriented $ m $-partite …