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48 results for complex equations

Paper establishes LL^{\infty} estimates for complex Monge-Ampere and Hessian equations.

problem Estimating solutions to complex Monge-Ampere and Hessian equations.
method Uses PDE techniques similar to Phong et al to prove LL^{\infty} and Hölder estimates.
result Establishes LL^{\infty} estimates for both complex Monge-Ampere and Hessian equations.

Proves solvability of general inverse σ_k equations with constant coefficients.

problem Solvability of general inverse σ_k equations with constant coefficients.
method Proves existence of unique solution if a C-subsolution exists.
result Confirms analytical conjecture for deformed Hermitian--Yang--Mills equation.

The note provides uniform estimates for complex Hessian equations on compact Hermitian manifolds.

problem Uniform estimates for solutions to degenerate complex Hessian equations on compact Hermitian manifolds.
method The approach relies on corresponding a priori estimates for Monge-Ampère equations.
result Extension and short alternative proof of results for complex Hessian equations.

Criterion for solvability of complex 2-Hessian equation on compact Kähler manifolds.

problem Solvability of complex 2-Hessian equation on compact Kähler manifolds.
method Nakai--Moishezon-type criterion associated with the complex 2-Hessian equation.
result Criterion equivalent to existence of a smooth 2-admissible representative in complex dimension three.

New proof for stability estimates in complex equations without pluripotential theory.

problem Stability estimates for complex Monge-Ampère and Hessian equations.
method New proof using general degenerations of background metrics.
result Uniform stability estimates for both equations under various degenerations.

Sharp LL^\infty estimates proved for complex Monge-Ampère equations.

problem Proving sharp LL^\infty estimates for complex Monge-Ampère equations.
method PDE proof covering fixed and degenerating background metrics, extends to general fully non-linear equations.
result Sharp LL^\infty estimates proved for complex Monge-Ampère equations.

The paper introduces new functionals and equations for complex vector bundles.

problem Complex vector bundle equations and their solutions.
method Introducing generalized Donaldson's functionals and discussing their Euler-Lagrange equations.
result Uniqueness of solutions to complex vector bundle equations.

We prove uniqueness of solutions to complex Monge-Ampère equations for small temperature.

problem Proving uniqueness of solutions to complex Monge-Ampère equations.
method Local and global analysis of bounded hyperconvex domains and compact complex manifolds.
result Uniqueness of solutions confirmed for small temperature parameters.

We describe a method to reduce partial differential equations of Monge-Ampère type in 4 variables to complex partial differential equations in 2 variables. To illustrate this method, we construct explicit holomorphic solutions of the special lagrangian equation, the real Monge-Ampère equations and the Plebanski equatio…

2011-04-03abs ↗pdf ↗

Proves smooth solution uniqueness and long-term existence for a parabolic equation on a complex manifold.

problem Existence and uniqueness of solutions to a parabolic equation on compact complex manifolds.
method Uses parabolic Donaldson's equation to prove existence and uniqueness of smooth solutions.
result Smooth solutions to the parabolic Donaldson's equation on compact complex manifolds exist and are unique for all time.

Characterizes complex Hessian equations for bounded energy functions.

problem Understanding degenerate complex Hessian equations for bounded energy functions.
method Proving sublevel set estimates and using Sobolev inequalities.
result Characterization of degenerate complex Hessian equations for bounded (p,m)(p,m)-energy functions.

Gradient and Laplacian estimates for complex Monge-Ampère equations found.

problem Estimating solutions to complex Monge-Ampère equations with singularities.
method Integral method applied to obtain gradient and Laplacian estimates.
result Gradient and Laplacian estimates for the solution to the singular complex Monge-Ampère equation.

Solves Calabi-Yau equation on complex manifolds with non-positive astheno-Ricci curvature.

problem Solving the form type Calabi-Yau equation on complex manifolds.
method Defined astheno-Ricci curvature and proved existence of solution under non-positive curvature condition.
result Existence of solution for Calabi-Yau equation with non-positive astheno-Ricci curvature.

Note on gradient estimates for complex Monge-Ampere equation.

problem Gradient estimates for solutions of complex Monge-Ampere equation.
method Estimates LpL^p and LL^{\infty} for gradient in terms of continuity of the right-hand side.
result Gradient estimates for solutions of complex Monge-Ampere equation.

Paper derives estimates for complex Hessian equations on Hermitian manifolds.

problem Estimating solutions to complex Hessian equations on Hermitian manifolds.
method Derives second order estimates for solutions in a specific cone.
result Establishes second order estimates for solutions in Γk+1Γ_{k+1} cone.

Solves complex Monge-Ampère equations with Hölder continuous solutions in Kähler manifolds.

problem Finding Hölder continuous solutions to complex Monge-Ampère equations.
method Analyzes the complex Monge-Ampère equation in Kähler manifolds using Sobolev spaces and Hölder continuity.
result Hölder continuity of solutions is equivalent to the measure's Hölder continuity in a complex Sobolev space.

This expository article introduces the Kapustin-Witten equations to mathematicians. We discuss the connections between the Complex Yang-Mills equations and the Kapustin-Witten equations. In addition, we show the relation between the Kapustin-Witten equations, the moment map condition and the gradient Chern-Simons flow.…

2014-01-28abs ↗pdf ↗

Study on positivity properties of vector bundle Monge-Ampère equation.

problem Analyzing positivity in vector bundle Monge-Ampère equation.
method Investigates MA-positivity and MA-semi-positive solutions for different ranks of holomorphic bundles over complex surfaces and manifolds.
result Positivity preservation in rank-two holomorphic bundles but not in higher ranks.

Stability results for complex Monge-Ampère equations in various classes.

problem Stability of solutions to complex Monge-Ampère equations.
method Weak stability results followed by Ck,α\mathcal{C}^{k,α} stability proofs.
result Proves stability of solutions in relative full mass classes and on quasi-projective varieties.

Solves Calabi-Yau equation on symplectic manifolds using measurable Kahler metrics.

problem Solving the Calabi-Yau equation on symplectic manifolds.
method Global deformation of almost complex structures compatible with symplectic form, constructing measurable Lipschitz Kahler metric.
result Existence theorem for solutions to the one-form type Calabi-Yau equation on closed symplectic manifolds.

The study finds continuous solutions to complex Hessian equations on compact Hermitian manifolds.

problem Finding continuous solutions to complex Hessian equations on compact Hermitian manifolds.
method Deriving an LL^\infty-estimate for bounded solutions to the complex mm-th Hessian equations on compact Hermitian manifolds, assuming a positive right-hand side in the Orlicz space Lnm(logL)n(hloglogL)nL^{\frac{n}{m}}(\log L)^n(h\circ\log \circ \log L)^n.
result Establishing the existence of continuous solutions to the complex Hessian equation under the prescribed assumptions.

Proves projectivity and ampleness of a Kähler manifold using complex Monge-Ampère equation.

problem Projectivity and ampleness of a compact Kähler manifold with negative Ricci curvature.
method An alternate proof using a C2C^2-estimate for a complex Monge-Ampère equation.
result Proves projectivity and ampleness of the Kähler manifold.

Paper generalizes sub-slope definition and solves complex equations on compact manifolds.

problem Solving complex equations on compact almost Hermitian manifolds.
method Generalized sub-slope definition and proved existence of solutions for a class of equations.
result Solved complex Hessian quotient and deformed Hermitian-Yang-Mills equations.

Study deformed Hermitian-Yang-Mills equation on complex projective space blowup.

problem Solving the deformed Hermitian-Yang-Mills equation on complex projective space blowup.
method Expressed the equation as an ODE and solved it using combinatorial methods under an algebraic stability condition.
result Evidence supporting a conjecture on general compact Kahler manifolds.

This paper proves Hölder continuity for complex Monge-Ampère equations on Kähler varieties.

problem Establishing Hölder estimates on singular Kähler varieties.
method Geometric regularization based on partial C0C^0 estimate.
result Uniform Hölder continuity for complex Monge-Ampère equations on Kähler varieties.

Study fully nonlinear elliptic equations on complex manifolds.

problem Solving fully nonlinear elliptic equations on complex manifolds.
method Derive C2,αC^{2,α}-estimate and prove existence theorems for solutions and Dirichlet problems.
result Existence theorems for solutions on closed Hermitian manifolds with unbounded conditions.

Estimates Kähler metrics with noncollapsing volume under complex Monge-Ampère constraints.

problem Volume noncollapsing for Kähler metrics induced by complex Monge-Ampère equations.
method Proves local volume noncollapsing estimate with Ricci curvature lower bound.
result Establishes diameter and gradient estimates for Kähler metrics.

Paper develops techniques to solve complex PDEs involving higher cohomology forms.

problem Develop PDE techniques to study real (p, p) forms on Hermitian manifolds.
method Parabolic approach to establish existence of classical solutions.
result Existence of classical solutions for a large class of fully nonlinear equations.

We consider 3-webs, hyper-para-complex structures and integrable Segre structures on manifolds of even dimension and generalise the second heavenly Plebański equation in the context of higher-dimensional hyper-para-complex structures. We also characterise the Segre structures admitting a compatible hyper-para-complex s…

2015-08-21abs ↗pdf ↗

Adapts PDE method to prove LL^\infty estimates for complex Hessian equations.

problem Proving LL^\infty estimates for complex Hessian equations on transverse Kähler manifolds.
method Adapts PDE approach of Guo-Phong-Tong and Guo-Phong-Tong-Wang [17, 18].
result Obtains LL^\infty estimate for transverse complex Monge-Ampère equations.

Proves existence and uniqueness of viscosity solutions to complex Hessian equations on compact Hermitian manifolds.

problem Existence and uniqueness of viscosity solutions to complex Hessian equations.
method Proves existence and uniqueness using viscosity solutions and determinant domination conditions.
result Viscosity solutions exist and are unique under certain conditions.

We prove uniform gradient and diameter estimates for a family of geometric complex Monge-Ampere equations. Such estimates can be applied to study geometric regularity of singular solutions of complex Monge-Ampere equations. We also prove a uniform diameter estimate for collapsing families of twisted Kahler-Einstein met…

2017-06-05abs ↗pdf ↗

In this note, we derive a Liouville theorem for the complex Monge-Ampère equation. Our result states that if the global solution uu of the complex Monge-Ampère equation with constant right-hand side differs from a quadratic polynomial solution by $o(\abs{x}^2)$ at infinity, then uu is a quadratic polynomial.

2013-03-11abs ↗pdf ↗