%0 Journal Article %T The group of autoequivalences and the Fourier-Mukai number of a projective manifold %A Kotaro Kawatani %J Mathematics %D 2010 %I arXiv %X Let $X$ be a smooth projective variety and $\Aut (D(X))$ the group of autoequivalences of the derived category of $X$. In this paper we show that $X$ has no Fourier-Mukai partner other than $X$ when $\Aut (D(X))$ is generated by shifts, automorphisms and tensor products of line bundles. %U http://arxiv.org/abs/1005.2866v2