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In this paper, we consider a class of prescribed Weingarten curvature equations. Under some sufficient condition, we obtain an existence result by the standard degree theory based on the a prior estimates for the solutions to the prescribed…

Differential Geometry · Mathematics 2019-10-25 Li Chen , Agen Shang , Qiang Tu

In this paper, we consider a class of Hessian quotient equations in the warped product manifold $\overline{M}=I\times_{\lambda}M$. Under some sufficient conditions, we obtain an existence result for the star-shaped compact hypersurface…

Differential Geometry · Mathematics 2021-05-26 Xiaojuan Chen , Qiang Tu , Ni Xiang

In this paper, we consider the Dirichlet problem for a class of Hessian quotient equations on Riemannian manifolds. Under the assumption of an admissible subsolution, we solve the existence and the uniquness for the Dirichlet problem in a…

Analysis of PDEs · Mathematics 2021-05-20 Xiaojuan Chen , Qiang Tu , Ni Xiang

In this paper, we establish the curvature estimates for a class of Hessian type equations. Some applications are also discussed.

Analysis of PDEs · Mathematics 2020-04-14 Jianchun Chu , Heming Jiao

In this paper, we consider the Neumann problem for a class of Hessian quotient equations involving a gradient term on the right-hand side in Euclidean space. More precisely, we derive the interior gradient estimates for the $(\Lambda,…

Analysis of PDEs · Mathematics 2025-01-13 Jiabao Gong , Zixuan Liu , Qiang Tu

In this paper, under suitable settings, we can obtain the existence and uniqueness of solutions to a class of Hessian quotient equations with Dirichlet boundary condition in Lorentz-Minkowski space $\mathbb{R}^{n+1}_{1}$, which can be seen…

Differential Geometry · Mathematics 2021-11-04 Ya Gao , YanLing Gao , Jing Mao

We are concerned with the Dirichlet problem for a class of Hessian type equations. Applying some new methods we are able to establish the $C^2$ estimates for an approximating problem under essentially optimal structure conditions. Based on…

Analysis of PDEs · Mathematics 2016-05-06 Heming Jiao , Tingting Wang

In this paper, we investigate the existence and nonexistence of entire solutions to a general class of Cauchy problems in the positive half line. Our results provide a unified approach to proving sharp local and entire solvability of…

Analysis of PDEs · Mathematics 2026-01-12 Feida Jiang , Neil S. Trudinger , Qiao-Qiao Xu

We consider the Euler system describing a one-dimensional inviscid flows in space along curves of a certain class. Using differential invariants for the Euler system, we obtain its quotient equation. The solutions of the quotient equation…

Mathematical Physics · Physics 2022-02-09 Anna Duyunova , Valentin Lychagin , Sergey Tychkov

This paper aims to provide a careful and self-contained introduction to the theory of topological degree in Euclidean spaces. It is intended for people mostly interested in analysis and, in general, a heavy background in algebraic or…

Functional Analysis · Mathematics 2023-04-14 Pierluigi Benevieri , Massimo Furi , Maria Patrizia Pera , Marco Spadini

In this paper, we consider the Dirichlet problem for a class of prescribed Hessian quotient type curvature equations with homogeneous boundary data in Minkowski space. By establishing the a priori C2 estimates, we obtain the existence…

Analysis of PDEs · Mathematics 2026-01-22 Mengru Guo , Yang Jiao

In this paper, we study Hessian equations and complex quotient equations on closed Hermitian manifolds. We directly derive the uniform estimate for the admissible solution. As an application, we solve general Hessian equations on closed…

Analysis of PDEs · Mathematics 2015-02-11 Wei Sun

We study parabolic equations in variable H\"older spaces on domains of Euclidean spaces. The existence and uniqueness of solutions is proved.

Analysis of PDEs · Mathematics 2020-04-20 Piotr Michał Bies

In this paper, we prove the existence of viscosity solutions to complex Hessian equations on compact Hermitian manifolds, assuming the existence of a strict subsolution in the viscosity sense. The results cover the complex Hessian quotient…

Analysis of PDEs · Mathematics 2025-01-29 Jingrui Cheng , Yulun Xu

In this paper, we study Hessian equations with prescribed contact angle boundary value or oblique derivative boundary value and finally derive the a priori global gradient estimate for the admissible solutions.

Analysis of PDEs · Mathematics 2022-03-08 Peihe Wang

We obtain several formulas for the Euclidean distance degree (ED degree) of an arbitrary nonsingular variety in projective space: in terms of Chern and Segre classes, Milnor classes, Chern-Schwartz-MacPherson classes, and an extremely…

Algebraic Geometry · Mathematics 2018-12-26 Paolo Aluffi , Corey Harris

In this paper, we derive $C^2$ estimates for a class of mixed Hessian type equations with Dirichlet boundary condition, and obtain the existence theorem of admissible solutions for the classical Dirichlet problem of these mixed Hessian type…

Analysis of PDEs · Mathematics 2022-10-26 Xiaojuan Chen , Juhua Shi , Xiaocui Wu , Kang Xiao

A generalization of the quotient integral formula is presented and some of its properties are investigated. Also the relations between two function spaces related to the spacial homogeneous spaces are derived by using general quotient…

Representation Theory · Mathematics 2017-02-22 T. Derikvand , R. A. Kamyabi-Gol , M. Janfada

In this paper, we derive a priori estimates for the gradient and second order derivatives of solutions to a class of Hessian type fully nonlinear parabolic equations with the first initial-boundary value problem on Riemannian manifolds.…

Analysis of PDEs · Mathematics 2015-02-04 Ge-Jun Bao , Wei-Song Dong

We define a class of quadratic differential algebras which are generated as differential graded algebras by the elements of an Euclidean space. Such a differential algebra is a differential calculus over the quadratic algebra of its…

Quantum Algebra · Mathematics 2019-03-20 Michel Dubois-Violette , Giovanni Landi
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