arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2004.06908math.AP
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外区域上的Hessian商方程

Hessian quotient equations on exterior domains

Haigang Li, Xiaoliang Li, Shuyang Zhao

摘要:

众所周知,蒙日-安培方程的著名的Jörgens-Calabi-Pogorelov定理指出,$\mathbb{R}^n$中的任何经典(粘性)凸解$\det(D^2u)=1$必须是二次多项式。因此,研究这类完全非线性偏微分方程的Dirichlet问题在无穷远处的渐近条件的存在性和唯一性是一个有趣的课题。作为Caffarelli-Li对蒙日-安培方程和Bao-Li-Li对$k$ -Hessian方程工作的继续,本文研究了Hessian商方程$σ_k(λ(D^2u))/σ_l(λ(D^2u))=1$的Dirichlet外问题对任意$1\leq l<k\leq n$在所有维数$n\geq 2$上的可解性.通过引入广义对称下解的概念,利用Perron方法,建立了一类黏性解的存在性定理,该解在无穷远处具有接近于某个二次多项式的渐近性态.

英文摘要:

It is well-known that a celebrated Jörgens-Calabi-Pogorelov theorem for Monge-Ampère equations states that any classical (viscosity) convex solution of $\det(D^2u)=1$ in $\mathbb{R}^n$ must be a quadratic polynomial. Therefore, it is an interesting topic to study the existence and uniqueness theorem of such fully nonlinear partial differential equations' Dirichlet problems on exterior domains with suitable asymptotic conditions at infinity. As a continuation of the works of Caffarelli-Li for Monge-Ampère equation and of Bao-Li-Li for $k$-Hessian equations, this paper is devoted to the solvability of the exterior Dirichlet problem of Hessian quotient equations $σ_k(λ(D^2u))/σ_l(λ(D^2u))=1$ for any $1\leq l<k\leq n$ in all dimensions $n\geq 2$. By introducing the concept of generalized symmetric subsolutions and then using the Perron's method, we establish the existence theorem for viscosity solutions, with prescribed asymptotic behavior which is close to some quadratic polynomial at infinity.

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