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Related papers: On a vanishing theorem for surfaces

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We refine Osserman's argument on the exceptional values of the Gauss map of algebraic minimal surfaces. This gives an effective estimate for the number of exceptional values and the totally ramified value number for a wider class of…

Differential Geometry · Mathematics 2007-05-23 Y. Kawakami , R. Kobayashi , R. Miyaoka

In this paper we prove a local removable singularity theorem for certain minimal laminations with isolated singularities in a Riemannian three-manifold. This removable singularity theorem is the key result used in our proof that a complete,…

Differential Geometry · Mathematics 2013-08-30 William H. Meeks , Joaquin Perez , Antonio Ros

We develop the theory of Hodge ideals for Q-divisors by means of log resolutions, extending our previous work on reduced hypersurfaces. We prove local (non-)triviality criteria and a global vanishing theorem, as well as other analogues of…

Algebraic Geometry · Mathematics 2018-11-08 Mircea Mustata , Mihnea Popa

The purpose of this survey is to present analytic versions of the injectivity theorem and their applications. The proof of our injectivity theorems is based on a combination of the L^2-method for the dbar-equation and the theory of harmonic…

Complex Variables · Mathematics 2015-11-16 Shin-ichi Matsumura

In this article we prove a relative Kawamata-Viehweg vanishing-type theorem for PLT $3$-folds in characteristic $p>5$. We use this to prove the normality of minimal log canonical centers and the adjunction formula for codimension $2$…

Algebraic Geometry · Mathematics 2016-05-24 Omprokash Das , Christopher D. Hacon

We generalize the construction of Raynaud of smooth projective surfaces of general type in positive characteristic that violate the Kodaira vanishing theorem. This corrects an earlier paper of the same purpose. These examples are smooth…

Algebraic Geometry · Mathematics 2015-09-17 Xudong Zheng

We study the uniform computational content of the Vitali Covering Theorem for intervals using the tool of Weihrauch reducibility. We show that a more detailed picture emerges than what a related study by Giusto, Brown, and Simpson has…

Logic · Mathematics 2018-08-23 Vasco Brattka , Guido Gherardi , Rupert Hölzl , Arno Pauly

We derive a generalized Stokes' theorem, valid in any dimension and for arbitrary loops, even if self intersecting or knotted. The generalized theorem does not involve an auxiliary surface, but inherits a higher rank gauge symmetry from the…

High Energy Physics - Theory · Physics 2008-02-03 N. Bralic

In this paper, we build up a min-max theory for minimal surfaces using sweepouts of surfaces of genus $g\geq 2$. We develop a direct variational methods similar to the proof of the famous Plateau problem by J. Douglas and T. Rado. As a…

Differential Geometry · Mathematics 2015-10-09 Xin Zhou

For a holomorphic function on a complex manifold, we show that the vanishing cohomology of lower degree at a point is determined by that for the points near it, using the perversity of the vanishing cycle complex. We calculate it explicitly…

Algebraic Geometry · Mathematics 2007-05-23 Alexandru Dimca , Morihiko Saito

This treats the base-point-freeness of the adjoint bundles on normal surfaces with a boundary. This is an extension of the non-relative version of the theorem of Ein-Lazarsfeld-Masek and the theorem of Kawachi-Masek.

alg-geom · Mathematics 2008-02-03 Takeshi Kawachi

The nonvanishing conjecture for projective log canonical pairs plays a key role in the minimal model program of higher dimensional algebraic geometry. The numerical nonvanishing conjecture considered in this paper is a weaker version of the…

Algebraic Geometry · Mathematics 2020-02-05 Jingjun Han , Wenfei Liu

We generalize the logarithmic decomposition theorem of Deligne-Illusie to a filtered version. There are two applications. The easier one provides a mod $p$ proof for a vanishing theorem in characteristic zero. The deeper one gives rise to a…

Algebraic Geometry · Mathematics 2021-09-07 Zebao Zhang

We study the weighted spectrum and vanishing cohomology for several classes of isolated hypersurface singularities, and how they contribute to the limiting mixed Hodge structure of a smoothing. Applications are given to several types of…

Algebraic Geometry · Mathematics 2024-01-23 Matt Kerr , Radu Laza

We extend an energy introduced by Mather to the setting of Almgren-Pitts min-max theory and obtain a parametric, higher-dimensional analogue of Mather's variational barrier theory for twist maps and geodesics on tori. We use this energy to…

Differential Geometry · Mathematics 2026-05-13 Hoan Nguyen

We compute the class groups of very general normal surfaces in complex projective three-space containing an arbitrary base locus $Z$, thereby extending the classic Noether-Lefschetz theorem (the case when $Z$ is empty). Our method is an…

Algebraic Geometry · Mathematics 2012-11-21 John Brevik , Scott Nollet

We classify minimal complex surfaces of general type with $p_g=q=3$. More precisely, we show that such a surface is either the symmetric product of a curve of genus 3 or a free $\Z_2-$quotient of the product of a curve of genus 2 and a…

Algebraic Geometry · Mathematics 2007-05-23 Christopher D. Hacon , Rita Pardini

We generalize Iskovskih's theorem about surfaces without irregularity and bigenus from the smooth case to regular surfaces over arbitrary fields, with special focus on the case of imperfect fields. This includes surfaces that are…

Algebraic Geometry · Mathematics 2025-03-14 Andrea Fanelli , Stefan Schröer

We give a reduction of the irregular case for the effective non-vanishing conjecture by virtue of the Fourier-Mukai transform. As a consequence, we reprove that the effective non-vanishing conjecture holds on algebraic surfaces.

Algebraic Geometry · Mathematics 2008-02-27 Qihong Xie

We show that, under the definiteness of holomorphic sectional curvature, the spaces of some holomorphic tensor fields on compact Chern-K\"{a}hler-like Hermitian manifolds are trivial. These can be viewed as counterparts to Bochner's…

Differential Geometry · Mathematics 2024-09-06 Ping Li