Perfectoid multiplier/test ideals in regular rings and bounds on symbolic powers

L Ma, K Schwede - Inventiones mathematicae, 2018 - Springer
Using perfectoid algebras we introduce a mixed characteristic analog of the multiplier ideal,
respectively test ideal, from characteristic zero, respectively p> 0 p> 0, in the case of a …

Quantifying singularities with differential operators

H Brenner, J Jeffries, L Núñez-Betancourt - Advances in Mathematics, 2019 - Elsevier
The F-signature of a local ring of prime characteristic is a numerical invariant that detects
many interesting properties. For example, this invariant detects (non) singularity and strong …

Asymptotic resurgence via integral closures

M DiPasquale, C Francisco, J Mermin… - Transactions of the …, 2019 - ams.org
Given an ideal in a polynomial ring, we show that the asymptotic resurgence studied by
Guardo, Harbourne, and Van Tuyl can be computed using integral closures. As a …

Equality of ordinary and symbolic powers of edge ideals of weighted oriented graphs

A Banerjee, B Chakraborty, KK Das… - Communications in …, 2023 - Taylor & Francis
Full article: Equality of ordinary and symbolic powers of edge ideals of weighted oriented
graphs Skip to Main Content Taylor and Francis Online homepage Taylor and Francis Online …

Symbolic powers of monomial ideals and Cohen-Macaulay vertex-weighted digraphs

P Gimenez, J Martínez-Bernal, A Simis… - … Algebra, and Related …, 2018 - Springer
In this paper we study irreducible representations and symbolic Rees algebras of monomial
ideals. Then we examine edge ideals associated to vertex-weighted oriented graphs. These …

Chudnovsky's conjecture and the stable Harbourne–Huneke containment

S Bisui, E Grifo, H Hà - … of the American Mathematical Society, Series B, 2022 - ams.org
We investigate containment statements between symbolic and ordinary powers and bounds
on the Waldschmidt constant of defining ideals of points in projective spaces. We establish …

Graph rings and ideals: Wolmer Vasconcelos contributions

MV Pinto, RH Villarreal - arXiv preprint arXiv:2305.06270, 2023 - arxiv.org
This is a survey article featuring some of Wolmer Vasconcelos contributions to commutative
algebra, and explaining how Vasconcelos' work and insights have contributed to the …

Symbolic powers of edge ideals of graphs

Y Gu, HT Hà, JL O'Rourke… - Communications in …, 2020 - Taylor & Francis
Let G be a graph and let I= I (G) be its edge ideal. When G is unicyclic, we give a
decomposition of symbolic powers of I in terms of its ordinary powers. This allows us to …

The v-number of edge ideals

D Jaramillo, RH Villarreal - Journal of Combinatorial Theory, Series A, 2021 - Elsevier
The aim of this work is to study the v-number of edge ideals of clutters. We relate the v-
number with the regularity of edge ideals and classify W 2 graphs. If the edge ideal of a …

The Structure of Symbolic Powers of Matroids

P Mantero, V Nguyen - arXiv preprint arXiv:2406.13759, 2024 - arxiv.org
We describe the structure of the symbolic powers $ I^{(\ell)} $ of the Stanley-Reisner ideals,
and cover ideals, $ I $, of matroids. We (a) prove a structure theorem describing a minimal …