On the general dual Orlicz-Minkowski problem (1802.06331v1)

Abstract: For $K\subseteq \mathbb{R}^n$ a convex body with the origin $o$ in its interior, and $\phi:\mathbb{R}^n\setminus{o}\rightarrow(0, \infty)$ a continuous function, define the general dual ($L_{\phi})$ Orlicz quermassintegral of $K$ by $$\mathcal{V}\phi(K)=\int{\mathbb{R}^n \setminus K} \phi(x)\,dx.$$ Under certain conditions on $\phi$, we prove a variational formula for the general dual ($L_{\phi})$ Orlicz quermassintegral, which motivates the definition of $\widetilde{C}{\phi,\mathcal{V}}(K, \cdot)$, the general dual ($L{\phi})$ Orlicz curvature measure of $K$. We pose the following general dual Orlicz-Minkowski problem: {\it Given a nonzero finite Borel measure $\mu$ defined on $S^{n-1}$ and a continuous function $\phi: \mathbb{R}^n\setminus{o}\rightarrow (0, \infty)$, can one find a constant $\tau>0$ and a convex body $K$ (ideally, containing $o$ in its interior), such that,} $$\mu=\tau\widetilde{C}{\phi,\mathcal{V}}(K,\cdot)? $$ Based on the method of Lagrange multipliers and the established variational formula for the general dual ($L{\phi})$ Orlicz quermassintegral, a solution to the general dual Orlicz-Minkowski problem is provided. In some special cases, the uniqueness of solutions is proved and the solution for $\mu$ being a discrete measure is characterized.