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We study the quaternionic Monge-Amp\`ere equation on HKT manifolds admitting an HKT foliation having corank 4. We show that in this setting the quaternionic Monge-Amp\`ere equation has always a unique solution for every basic datum. This…

Differential Geometry · Mathematics 2022-04-28 Giovanni Gentili , Luigi Vezzoni

Motivated from mathematical aspects of the superstring theory, we introduce a new equation on a balanced, hermitian manifold, with zero first Chern class. Solving the equation, one will obtain, in each Bott--Chern cohomology class, a…

Differential Geometry · Mathematics 2010-10-15 Jixiang Fu , Zhizhang Wang , Damin Wu

We prove a Liouville type theorem for entire maximal $m$-subharmonic functions in $\mathbb C^n$ with bounded gradient. This result, coupled with a standard blow-up argument, yields a (non-explicit) a priori gradient estimate for the complex…

Complex Variables · Mathematics 2017-06-20 Slawomir Dinew , Slawomir Kolodziej

We prove the long time existence and uniqueness of solution to a parabolic Monge-Amp\`ere type equation on compact Hermitian manifolds. We also show that the normalization of the solution converges to a smooth function in the smooth…

Differential Geometry · Mathematics 2019-10-04 Tao Zheng

Let (M, \omega) be a compact symplectic 4-manifold with a compatible almost complex structure J. The problem of finding a J-compatible symplectic form with prescribed volume form is an almost-K\"ahler analogue of Yau's theorem and is…

Differential Geometry · Mathematics 2018-12-14 Ben Weinkove

In this paper we introduce a new equation on the compact Kahler manifolds. Solution of this equation corresponds to the Calabi-Yau metric. New equation differs from the Monge--Ampere equation considered by Calabi and Yau.

Differential Geometry · Mathematics 2012-03-14 Dmitry Egorov

We propose a new class of fundamental solutions for the numerical analysis of boundary value problems for the Maxwell equations. We prove completeness of systems of such fundamental solutions in appropriate Sobolev spaces on a smooth…

Mathematical Physics · Physics 2009-01-24 Kira V. Khmelnytskaya , Vladislav V. Kravchenko , Vladimir S. Rabinovich

We establish a priori upper bounds for solutions to the spatially inhomogeneous Landau equation in the case of moderately soft potentials, with arbitrary initial data, under the assumption that mass, energy and entropy densities stay under…

Analysis of PDEs · Mathematics 2017-01-31 Stephen Cameron , Luis Silvestre , Stanley Snelson

We prove that Calabi-Yau metrics on compact Calabi-Yau manifolds whose Kahler classes shrink the fibers of a holomorphic fibration have a priori estimates of all orders away from the singular fibers. To this end we prove an asymptotic…

Differential Geometry · Mathematics 2024-12-10 Hans-Joachim Hein , Valentino Tosatti

We show the existence and uniqueness of bounded solutions to the degenerate complex Monge-Amp\`ere type equations on compact Hermitian manifolds. We also study the asymptotics of these solutions. As applications, we give partial answers to…

Complex Variables · Mathematics 2023-05-30 Yinji Li , Zhiwei Wang , Xiangyu Zhou

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 the setting of Donaldson's conjecture on the Calabi-Yau equation on symplectic 4-manifolds, we prove an a priori estimate which in the K\"ahler case resembles a classical estimate of Cheng-Yau.

Differential Geometry · Mathematics 2025-07-22 Valentino Tosatti

In this work we establish a gradient bound and Liouville-type theorems for solutions to Quasi-linear elliptic equations on compact Riemannian Manifolds with nonnegative Ricci curvature. Also, we provide a local splitting theorem when the…

Analysis of PDEs · Mathematics 2025-03-17 Dimitrios Gazoulis , George Zacharopoulos

By introducing a more flexible notion of convexity, we obtain a new Omori-Yau maximum principle for harmonic maps. In the spirit of the Calabi-Yau conjectures, this principle is more suitable for studying the unboundedness of certain…

Differential Geometry · Mathematics 2024-04-16 Renan Assimos , Balázs Márk Békési , Giuseppe Gentile

In this paper we prove the existence and uniqueness of the form-type Calabi-Yau equation on K\"ahler manifolds of nonnegative orthogonal bisectional curvature.

Differential Geometry · Mathematics 2011-03-16 Jixiang Fu , Zhizhang Wang , Damin Wu

In 1978, Yau confirmed a conjecture due to Calabi stating the existence of K\"ahler metrics with prescribed Ricci forms on compact K\"ahler manifolds. A version of this statement for effective orbifolds can be found in the literature. In…

Complex Variables · Mathematics 2017-11-01 Mitchell Faulk

In this paper, we obtain the Bedford-Taylor interior $C^{2}$ estimate and local Calabi $C^{3}$ estimate for the solutions to complex Monge-Amp\`ere equations on Hermitian manifolds.

Differential Geometry · Mathematics 2010-07-16 Xi Zhang , XiangWen Zhang

We prove the existence of unique smooth solutions to the quaternionic Monge-Amp\`{e}re equation for $(n-1)$-quaternionic plurisubharmonic functions on a hyperK\"{a}hler manifold and thus obtain solutions for the quaternionic form type…

Differential Geometry · Mathematics 2023-01-24 Jixiang Fu , Xin Xu , Dekai Zhang

We study the parabolic complex Monge-Amp\`ere type equations on closed Hermitian manfolds. We derive uniform $C^\infty$ {\em a priori} estimates for normalized solutions, and then prove the $C^\infty$ convergence. The result also yields a…

Analysis of PDEs · Mathematics 2013-11-14 Wei Sun

By using the global deformation of almost complex structures which are compatible with a symplectic form off a Lebesgue measure zero subset, we construct a (measurable) Lipschitz Kahler metric such that the one-form type Calabi-Yau equation…

Differential Geometry · Mathematics 2023-11-30 Qiang Tan , Hongyu Wang