Interior $C^{1,\alpha}$ regularity on the linearized Monge-Amp$\grave{e}$re equation with $\mathrm{VMO}$ type coefficients

TL;DR

This paper proves interior $C^{1,eta}$ regularity for solutions of the linearized Monge-Ampère equation under VMO-type conditions on the measure density, extending regularity results to less regular coefficients.

Contribution

It establishes interior $C^{1,eta}$ estimates for the linearized Monge-Ampère equation with VMO-type coefficients, broadening the scope of regularity theory.

Findings

Proves interior $C^{1,eta}$ regularity under VMO conditions.

Extends regularity results to equations with less regular coefficients.

Provides a framework for analyzing linearized Monge-Ampère equations with VMO-type densities.

Abstract

In this paper, we establish interior $C^{1,\alpha}$ estimates for solutions of the linearized Monge-Amp$\grave{e}$re equation $$\mathcal{L}_{\phi}u:=\mathrm{tr}[\Phi D^2 u]=f,$$ where the density of the Monge-Amp$\grave{e}$re measure $g:=\mathrm{det}D^2\phi$ satisfies a $\mathrm{VMO}$-type condition and $\Phi:=(\mathrm{det}D^2\phi)(D^2\phi)^{-1}$ is the cofactor matrix of $D^2\phi$.