Results 1 to 10 of about 347 (26)

Weighted Hodge ideals of reduced divisors

open access: yesForum of Mathematics, Sigma, 2023
We study the Hodge and weight filtrations on the localization along a hypersurface, using methods from birational geometry and the V-filtration induced by a local defining equation.
Sebastián Olano
doaj   +1 more source

THE LIPMAN–ZARISKI CONJECTURE IN GENUS ONE HIGHER

open access: yesForum of Mathematics, Sigma, 2020
We prove the Lipman–Zariski conjecture for complex surface singularities with $p_{g}-g-b\leqslant 2$. Here $p_{g}$ is the geometric genus, $g$ is the sum of the genera of exceptional curves and $b$ is the first Betti number of the dual graph.
HANNAH BERGNER, PATRICK GRAF
doaj   +1 more source

HODGE IDEALS FOR $\mathbb{Q}$-DIVISORS, $V$-FILTRATION, AND MINIMAL EXPONENT

open access: yesForum of Mathematics, Sigma, 2020
We compute the Hodge ideals of $\mathbb{Q}$-divisors in terms of the $V$-filtration induced by a local defining equation, inspired by a result of Saito in the reduced case. We deduce basic properties of Hodge ideals in this generality, and relate them to
MIRCEA MUSTAŢĂ, MIHNEA POPA
doaj   +1 more source

Hironaka's characteristic polygon and effective resolution of surfaces [PDF]

open access: yes, 2006
Hironaka's concept of characteristic polyhedron of a singularity has been one of the most powerful and fruitful ideas of the last decades in singularity theory. In fact, since then combinatorics have become a major tool in many important results. However,
Piedra, R., Tornero, J. M.
core   +4 more sources

Two series of polyhedral fundamental domains for Lorentz bi-quotients [PDF]

open access: yes, 2019
The main aim of this paper is to give two infinite series of examples of Lorentz space forms that can be obtained from Lorentz polyhedra by identification of faces.
Pratoussevitch, Anna, Turki, Nasser Bin
core   +2 more sources

Milnor Fibre Homology via Deformation [PDF]

open access: yes, 2015
In case of one-dimensional singular locus, we use deformations in order to get refined information about the Betti numbers of the Milnor fibre.Comment: 14 pages.
Siersma, Dirk, Tibar, Mihai
core   +2 more sources

On the embedded Nash problem

open access: yesForum of Mathematics, Pi
The embedded Nash problem for a hypersurface in a smooth algebraic variety is to characterize geometrically the maximal irreducible families of arcs with fixed order of contact along the hypersurface.
Nero Budur   +4 more
doaj   +1 more source

An irreducibility criterion for power series

open access: yes, 2016
We prove an irreducibility criterion for polynomials with power series coefficients generalizing previous known results concerning quasi-ordinary ...
Rond, Guillaume, Schober, Bernd
core   +3 more sources

Towards transversality of singular varieties: splayed divisors [PDF]

open access: yes, 2012
We study a natural generalization of transversally intersecting smooth hypersurfaces in a complex manifold: hypersurfaces, whose components intersect in a transversal way but may be themselves singular. Such hypersurfaces will be called splayed divisors.
Faber, Eleonore
core   +1 more source

Free divisors versus stability and coincidence thresholds

open access: yes, 2014
We show that there is an unexpected relation between free divisors and stability and coincidence thresholds for projective ...
Sticlaru, Gabriel
core   +1 more source

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