Abstract

The aim of this short note is the study of the scalar curvature of a complete gradient Yamabe solitons. In particular we show an integral inequality for a gradient Yamabe soliton and as a consequence we proved that under a linear growth of the potential function f the gradient Yamabe soliton has constant scalar curvature. Also, with natural conditions and non-positive Ricci curvature, any complete Yamabe soliton has constant scalar curvature, namely, it is a Yamabe metric and become rotationally symmetric.

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