Fourier分析导论——第8章——Dirichlet定理(E.M. Stein & R. Shakarchi)
Dirichlet,GustavLejeune(DÄuren1805-GÄottingen1859),Germanmathematician.Hewasanumbertheoristatheart.But,whilestudyinginParis,beingaverylike-ableperson,hewasbefriendedbyFourierandotherlike-mindedmathema