Results 71 to 80 of about 136,089 (106)

CASTELNUOVO-MUMFORD REGULARITY AND BRIDGELAND STABILITY OF POINTS IN THE PROJECTIVE PLANE

open access: yes, 2018
In this paper, we study the relation between Castelnuovo-Mumford regularity and Bridgeland stability for the Hilbert scheme of n points on P-2. For the largest [n/2] Bridgeland walls, we show that the general ideal sheaf destabilized along a smaller ...
J Park (45161)   +2 more
core  

Irrational asymptotic behaviour of Castelnuovo-Mumford regularity

open access: yesJournal für die reine und angewandte Mathematik (Crelles Journal), 2000
We give examples of nonsingular curves in projective 3 space such that the regularity of powers of their ideal sheaves are highly nonlinear. This is in constrast to the case of an ideal I in a polynomial ring, where the regularity of I^n is a linear polynomial in n for large n.
openaire   +3 more sources

Veronese transform, and Castelnuovo-Mumford regularity of modules

open access: yes, 2014
Veronese rings, Segre embeddings or more generally Segre-Veronese embeddings are very important rings in Algebraic Geometry. In this paper we present an original, elementary way to compute the Hilbert-Poincare series of these rings, as a consequence we ...
Marcel Morales, Nguyen Thi Dung
core  

Hilbert series of Segre transform, and Castelnuovo-Mumford regularity

open access: yes, 2013
In a recent preprint, Ilse Fischer and Martina Kubitzke, proved the bilinearity of the Segre transform under some restricted hypothesis, motivated by their results we show in this paper the bilinearity of the Segre transform in general.
Morales, Marcel, Nguyen Thi, Dung
core   +1 more source

Multigraded Castelnuovo-Mumford Regularity

open access: yes, 2003
We develop a multigraded variant of Castelnuovo-Mumford regularity. Motivated by toric geometry, we work with modules over a polynomial ring graded by a finitely generated abelian group.
Diane Maclagan   +3 more
core  

Higher resonance schemes and Koszul modules of simplicial complexes. [PDF]

open access: yesJ Algebr Comb (Dordr)
Aprodu M   +4 more
europepmc   +1 more source

Castelnuovo-Mumford regularity of unprojections and the Eisenbud-Goto regularity conjecture [PDF]

open access: yes
McCullough and Peeva found sequences of counterexamples to the Eisenbud--Goto conjecture on the Castelnuovo--Mumford regularity by using Rees-like algebras, where entries of each sequence have increasing dimensions and codimensions.
Choe, Junho
core  

Castelnuovo-Mumford regularity of products of ideals.

open access: yes, 2003
The Castelnuovo-Mumford regularity reg(M) is one of the most important invariants of a finitely generated graded module M over a polynomial ring R. For instance, it measures the amount of computational resources that working with M requires.
CONCA, ALDO, HERZOG J.
core  

Castelnuovo-Mumford Regularity over Scrolls and Splitting Criteria

open access: yes
We introduce and study a notion of Castelnuovo-Mumford regularity suitable for scrolls obtained as projectivisations of sums of line bundles on $\mathbb P^m$.
Malaspina, F., Sankaran, G.
core   +1 more source

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