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pro vyhledávání: '"Antônio Kelson Silva"'
Autor:
Abdênago Barros, Antônio Kelson Silva
Publikováno v:
Differential Geometry and its Applications. 60:147-155
The aim of this paper is to present a gradient estimate for eigenfunctions associated to the operator Δ V on a Riemannian manifold with m-Bakry–Emery–Ricci tensor bounded from below. As a consequence of this estimate we obtain a Harnack type ine