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Related papers: A note on Teissier problem for nef classes

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Let $(X,\omega)$ be a compact K\"ahler manifold of dimension $n$ and fix $m\in \mathbb{N}$ such that $1\leq m \leq n$. We prove that any $(\omega,m)$-sh function can be approximated from above by smooth $(\omega,m)$-sh functions. A…

Complex Variables · Mathematics 2014-02-24 Chinh H. Lu , Van-Dong Nguyen

Much inspired by J. A. Wi\'sniewski's nef-value function method, we prove that in a smooth projective family over the unit disk, if the adjoint bundle of the canonical line bundle with a relatively semiample line bundle is nef on one fiber,…

Algebraic Geometry · Mathematics 2025-10-29 Mu-Lin Li , Sheng Rao , Kai Wang

This paper investigates the existence of a global $C^{1,1}$ solution to the Dirichlet problem for the $k$-Hessian equation with a nonnegative right-hand side $f$, focusing on the required conditions for $f$. The conditions $f^{1/(k-1)}\in…

Analysis of PDEs · Mathematics 2025-12-16 Yasheng Lyu

We classify compact K\"ahler manifolds with semi-positive holomorphic bisectional and big tangent bundles. We also classify compact complex surfaces with semi-positive tangent bundles and compact complex $3$-folds of the form $P(T^*X)$…

Differential Geometry · Mathematics 2015-04-24 Xiaokui Yang

We give some estimates of the remainder terms for several conformally-invariant Sobolev-type inequalities on the Heisenberg group, in analogy with the Euclidean case. By considering the variation of associated functionals, we give a…

Analysis of PDEs · Mathematics 2016-01-20 Heping Liu , An Zhang

In this article we studied Nielsen coincidence theory for maps between manifolds of same dimension without hypotheses on orientation. We use the definition of semi-index of a class, we review the definition of defective classes and study…

Algebraic Topology · Mathematics 2007-05-23 Daniel Vendrúscolo

In this article we consider a method of proving a class of inequalities of the form (1). The method is based on the precise approximations of the sine and cosine functions by Maclaurin polynomials of given order. By using this method we…

Classical Analysis and ODEs · Mathematics 2019-10-15 Branko Malesevic , Milica Makragic

Based on the recent work of K.~Zhang, we discuss the Miyaoka-Yau type inequality for projective manifolds with nef anti-canonical line bundle, assuming the lower bound of the delta-invariant introduced by Fujita and Odaka.

Differential Geometry · Mathematics 2024-07-08 Tomoyuki Hisamoto

For $(n-2)$ free divisor classes on a smooth projective variety of dimension $n$, the product of these free divisor classes induces a Lefschetz type operator acting on the N\'{e}ron-Severi space or the cohomology group of $(1,1)$ classes.…

Algebraic Geometry · Mathematics 2025-05-27 Jiajun Hu , Jian Xiao

Solving a decades-old problem we show that Keisler's 1967 order on theories has the maximum number of classes. The theories we build are simple unstable with no nontrivial forking, and reflect growth rates of sequences which may be thought…

Logic · Mathematics 2021-08-12 M. Malliaris , S. Shelah

We establish the canonical class inequality for families of higher dimensional projective manifolds. As an application, we get a new inequality between the Chern numbers of 3-folds with smooth families of minimal surfaces of general type…

Algebraic Geometry · Mathematics 2010-09-30 Jun Lu , Sheng-Li Tan , Kang Zuo

Let (X,H) be a polarized, smooth, complex projective surface, and let v be a Chern character on X with positive rank and sufficiently large discriminant. In this paper, we compute the Gieseker wall for v in a slice of the stability manifold…

Algebraic Geometry · Mathematics 2016-03-11 Izzet Coskun , Jack Huizenga

In this paper, we prove the existence of $C^{1,1}$-solution to the Dirichlet problem for degenerate elliptic $k$-Hessian equations $S_{k}[u]=f$ under a condition which is weaker than the condition $f^{1/k}\in C^{1,1}(\bar\Omega)$.

Analysis of PDEs · Mathematics 2013-09-18 Qi Wang , Chao-Jiang Xu

We state and prove a Cheeger-like inequality for coexact 1-forms on closed orientable Riemannian manifolds.

Differential Geometry · Mathematics 2021-04-30 Adrien Boulanger , Gilles Courtois

In this paper, we consider the Neumann problem of a class of mixed complex Hessian equations, and establish the global C^1 estimates a nd reduce the global second derivative estimate to the estimate of double normal second derivatives on…

Analysis of PDEs · Mathematics 2020-03-16 Chuan-Qiang Chen , Li Chen , Ni Xiang

We consider the Dirichlet problem for the Beltrami equation in some simply connected domain. We consider the class of all homeomorphic solutions of such a problem with a normalization condition and set-theoretic constraints on their complex…

Complex Variables · Mathematics 2021-09-21 Oleksandr Dovhopiatyi , Evgeny Sevost'yanov

The paper aims to investigate the classification problem of low dimensional complex none Lie filiform Leibniz algebras. There are two sources to get classification of filiform Leibniz algebras. The first of them is the naturally graded none…

Rings and Algebras · Mathematics 2007-10-02 I. S. Rakhimov , S. K. Said Husain

In this paper, we consider the Dirichlet problem for a class of prescribed curvature equations. Both degenerate and non-degenerate cases are considered. The existence of the $C^{1,1}$ regular graphic hypersurfaces with prescribing a class…

Analysis of PDEs · Mathematics 2022-08-17 Heming Jiao , Zaichen Sun

The central topic of this thesis is the study of some properties of a class of complex compact manifolds~: Moishezon manifolds. In the first part, we generalize J.-P. Demailly's holomorphic Morse inequalities to the case of a line bundle…

alg-geom · Mathematics 2008-02-03 Laurent Bonavero

We establish sharp Trudinger-Moser inequalities with logarithmic weights for the $k$-Hessian equation and investigate the existence of maximizers. Our analysis extends the classical results of Tian and Wang to $k$-admissible function spaces…

Analysis of PDEs · Mathematics 2025-04-15 João Marcos do Ó , José Francisco de Oliveira , Raoní Cabral Ponciano
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