中文
相关论文

相关论文: Subadjunction theorem for pluricanonical divisors

200 篇论文

Consider a homogeneous multifold convex conic system $$ Ax = 0, \; x\in K_1\times...\times K_r $$ and its alternative system $$ A\transp y \in K_1^*\times...\times K_r^*, $$ where $K_1,..., K_r$ are regular closed convex cones. We show that…

最优化与控制 · 数学 2011-08-04 Javier Peña , Vera Roshchina

We construct a relative Chow-Kunneth decomposition for a conic bundle over a surface such that the middle projector gives the Prym variety of the associated double covering of the discriminant of the conic bundle. This gives a refinement…

代数几何 · 数学 2009-04-08 Jan Nagel , Morihiko Saito

This thesis is concerned with the theory of invariant bilinear differential pairings on parabolic geometries. It introduces the concept formally with the help of the jet bundle formalism and provides a detailed analysis. More precisely,…

微分几何 · 数学 2009-04-22 Jens Kroeske

We introduce a multiple conjugation biquandle, and show that it is the universal algebra to define a semi-arc coloring invariant for handlebody-links. A multiple conjugation biquandle is a generalization of a multiple conjugation quandle.…

We continue to develop the theory of monads and multitensors. The central result of this paper - the lifting theorem for multitensors - enables us to see the Gray tensor product of 2-categories and the Crans tensor product of Gray…

范畴论 · 数学 2011-06-13 Michael Batanin , Denis-Charles Cisinski , Mark Weber

We adapt the definition of the Vietoris map to the framework of finite topological spaces and we prove some coincidence theorems. From them, we deduce a Lefschetz fixed point theorem for multivalued maps that improves recent results in the…

动力系统 · 数学 2020-10-27 Pedro J. Chocano , Manuel A. Morón , Francisco R. Ruiz del Portal

We give a necessary and sufficient condition for a system of linear inhomogeneous fractional differential equations to have at least one bounded solution. We also obtain an explicit description for the set of all bounded (or decay)…

经典分析与常微分方程 · 数学 2018-08-24 N. D. Cong , T. S. Doan , H. T. Tuan

The linear transports along paths in vector bundles introduced in Ref. [1] are applied to the special case of tensor bundles over a given differentiable manifold. Links with the transports along paths generated by derivations of tensor…

微分几何 · 数学 2007-05-23 Bozhidar Z. Iliev

We show that the anti-canonical bundle of any $\mathbb Q$-factorial surface is numerically effective if and only if it is pseudo-effective. To prove this, we establish a numerical non-vanishing theorem for surfaces polarized with…

代数几何 · 数学 2024-10-22 Jihao Liu , Lingyao Xie

We prove that certain vector bundles over surfaces are ample if they are so when restricted to divisors, certain numerical criteria hold, and they are semistable (with respect to $\det(E)$). This result is a higher-rank version of a theorem…

代数几何 · 数学 2023-11-15 Indranil Biswas , Vamsi Pritham Pingali

We prove two theorems on the locally finite decompositions of the cones of divisors by the cones which correspond to canonical and minimal models. We introduce the concept of the numerical linear systems in order to simplify the argument on…

代数几何 · 数学 2009-09-22 Yujiro Kawamata

Article explicitly expresses Subgraph Isomorphism by a polynomial size asymmetric linear system.

离散数学 · 计算机科学 2008-11-10 Sergey Gubin

We give an elementary proof of an analogue of Fej\'er's theorem in weighted Dirichlet spaces with superharmonic weights. This provides a simple way of seeing that polynomials are dense in such spaces.

复变函数 · 数学 2020-11-06 Javad Mashreghi , Thomas Ransford

Diers developed a general theory of right multi-adjoint functors leading to a purely categorical, point-set construction of spectra. Situations of multiversal properties return sets of canonical solutions rather than a unique one. In the…

范畴论 · 数学 2021-04-27 Axel Osmond

In this paper, we define the topological pressure for sub-additive potentials via separated sets in random dynamical systems and we give a proof of the relativized variational principle for the topological pressure.

动力系统 · 数学 2009-10-06 Yun Zhao , Yongluo Cao

Let $X$ be a weakly pseudoconvex manifold and $L\longrightarrow X$ be a holomorphic line bundle with a singular positive Hermitian metric $h$. In this article, we provide a points separation theorem and an embedding for the adjoint linear…

复变函数 · 数学 2025-12-16 Yuta Watanabe

In his work on log-concavity of multiplicities, Okounkov showed in passing that one could associate a convex body to a linear series on a projective variety, and then use convex geometry to study such linear systems. Although Okounkov was…

代数几何 · 数学 2008-05-30 Robert Lazarsfeld , Mircea Mustata

We revisit a subexponential bound for the $abc$ conjecture due to the first author, and we establish a variation of it using linear forms in logarithms. As an application, we prove an unconditional subexponential bound towards the $4$-terms…

数论 · 数学 2024-06-10 Hector Pasten , Rocío Sepúlveda-Manzo

We consider when a smooth vector bundle endowed with a connection possesses non-trivial, local parallel sections. This is accomplished by means of a derived flag of subsets of the bundle. The procedure is algebraic and rests upon the…

微分几何 · 数学 2008-04-11 Richard Atkins

We present a novel Type II variational principle on the cotangent bundle of a Lie group which enforces Type II boundary conditions, i.e., fixed initial position and final momentum. In general, such Type II variational principles are only…

数值分析 · 数学 2025-02-19 Brian K. Tran , Melvin Leok