%0 Journal Article %T Evolution of Yamabe constant under Ricci flow %A Shu-Cheng Chang %A Peng Lu %J Mathematics %D 2006 %I arXiv %X In this note under a crucial technical assumption we derive a differential equality of the Yamabe constant $\mathcal{Y} (g (t))$ where $g (t)$ is a solution of the Ricci flow on a closed manifold. %U http://arxiv.org/abs/math/0604546v1