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We define a general class of elliptic equations for 2-forms on 4-manifolds, of which the complex Monge-Ampere equation is a prototype. We obtain some regularity results and discuss various connections (some speculative) with modern…

Differential Geometry · Mathematics 2007-05-23 S. K. Donaldson

We show existence and uniqueness of solutions to the Monge-Ampere equation on compact almost complex manifolds with non-integrable almost complex structure.

Analysis of PDEs · Mathematics 2019-06-10 Jianchun Chu , Valentino Tosatti , Ben Weinkove

We consider two natural problems arising in geometry which are equivalent to the local solvability of specific equations of Monge-Ampere type. These are: the problem of locally prescribed Gaussian curvature for surfaces in R^3, and the…

Analysis of PDEs · Mathematics 2010-03-12 Marcus A. Khuri

In this paper we describe the algebra of differential invariants for GL(n,C)-structures. This leads to classification of almost complex structures of general positions. The invariants are applied to the existence problem of…

Differential Geometry · Mathematics 2007-12-21 Boris Kruglikov

The object of investigations are almost hypercomplex structures with Hermitian-Norden metrics on 4-dimensional Lie groups considered as smooth manifolds. There are studied both the basic classes of a classification of 4-dimensional…

Differential Geometry · Mathematics 2019-09-16 Hristo Manev

We are concerned with fully nonlinear elliptic equations on complex manifolds and search for technical tools to overcome difficulties in deriving a priori estimates which arise due to the nontrivial torsion and curvature, as well as the…

Analysis of PDEs · Mathematics 2013-07-01 Bo Guan , Qun Li

We study complex Monge-Ampere equations on Hermitian manifolds, extending classical existence results of Yau and Aubin in the Kahler case, and those of Caffarelli, Kohn, Nirenberg and Spruck for the Dirichlet problem in $C^n$. As an…

Differential Geometry · Mathematics 2009-06-22 Bo Guan , Qun Li

We study a fully nonlinear equation of complex Monge-Ampere type on Hermitian manifolds. We establish the a priori estimates for solutions of the equation up to the second order derivatives with the help of a subsolution.

Analysis of PDEs · Mathematics 2012-10-23 Bo Guan , Qun Li

This is a survey of some of the recent developments in the theory of complex Monge-Ampere equations. The topics discussed include refinements and simplifications of classical a priori estimates, methods from pluripotential theory,…

Differential Geometry · Mathematics 2012-10-02 D. H. Phong , Jian Song , J. Sturm

This article deals with 3-forms on 6-dimensional manifodls, the first dimension where the classification of 3-forms is not trivial. There are three classes of multisymplectic 3-forms there. We study the class which is closely related to…

Differential Geometry · Mathematics 2007-05-23 Martin Panak , Jiri Vanzura

A (bounded) manifold of circular type is a complex manifold M of dimension n admitting a (bounded) exhaustive real function u, defined on M minus a point x_o, so that: a) it is a smooth solution on $M\setminus {x_o}$ to the Monge-Amp\`ere…

Complex Variables · Mathematics 2007-07-10 Giorgio Patrizio , Andrea Spiro

We consider two natural problems arising in geometry which are equivalent to the local solvability of specific equations of Monge-Ampere type. These two problems are: the local isometric embedding problem for two-dimensional Riemannian…

Analysis of PDEs · Mathematics 2010-03-12 Marcus A. Khuri

Distributions of Monge type are a class of strongly regular bracket-generating distributions introduced by I. Anderson, Zh. Nie and P. Nurowski. Their symbol algebras prolong to simple graded Lie algebras, thus allowing one to associate a…

Differential Geometry · Mathematics 2016-06-30 Jan Gutt

An examples of Monge-Ampere equations connected with six-dimensional generalization of the Plebanski four-dimensional space are considered. Their particular solutions are constructed.

General Physics · Physics 2008-12-10 V. Dryuma , L. Bogdanov

We study a number of local and global classification problems in generalized complex geometry. In the first topic, we characterize the local structure of generalized complex manifolds by proving that a generalized complex structure near a…

Differential Geometry · Mathematics 2012-05-27 Michael Bailey

We consider three fundamental classes of compact almost homogeneous manifolds and show that the complements of singular complex orbits in such manifolds are endowed with plurisubharmonic exhaustions satisfying complex homogeneous…

Complex Variables · Mathematics 2017-06-06 Morris Kalka , Giorgio Patrizio , Andrea Spiro

We review the recent development of Hodge theory for almost complex manifolds. This includes the determination of whether the Hodge numbers defined by $\bar\partial$-Laplacian are almost complex, almost K\"ahler, or birational invariants in…

Differential Geometry · Mathematics 2022-03-18 Weiyi Zhang

We derive a priori $C^2$ estimates for a class of complex Monge-Ampere type equations on Hermitian manifolds. As an application we solve the Dirichlet problem for these equations under the assumption of existence of a subsolution; the…

Analysis of PDEs · Mathematics 2013-01-25 Bo Guan , Wei Sun

In this chapter, I formulate four challenging conjectures in Nonlinear Analysis. More precisely: a conjecture on the Monge-Amp\`ere equation; a conjecture on an eigenvalue problem; a conjecture on a non-local problem; a conjecture on…

Analysis of PDEs · Mathematics 2017-06-20 Biagio Ricceri

The Dirichlet problem for a Monge-Ampere equation corresponding to a nonnegative, possible degenerate cohomology class on a Kaehler manifold with boundary is studied. C^{1,\alpha} estimates away from a divisor are obtained, by combining…

Differential Geometry · Mathematics 2009-04-14 D. H. Phong , Jacob Sturm
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