Strong convexity for harmonic functions on compact symmetric spaces
نویسندگان
چکیده
Let $h$ be a harmonic function defined on spherical disk. It is shown that $\Delta ^k |h|^2$ nonnegative for all $k\in \mathbb {N}$ where $\Delta$ the Laplace-Beltrami operator. This fact generalized to functions disk in normal homogeneous compact Riemannian manifold, and particular symmetric space of type. complements similar property $\mathbb {R}^n$ discovered by first two authors related strong convexity $L^2$-growth functions.
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ژورنال
عنوان ژورنال: Proceedings of the American Mathematical Society
سال: 2021
ISSN: ['2330-1511']
DOI: https://doi.org/10.1090/proc/15735