Partial differential equations: an introduction Modern methods in partial differential equations :anIntroduction 书名原文:Modern methods in partial differential equations :anIntroduction partial differential equations and the calculus of variations Partial differential equations Hyperbolic partial differential equations and geometric optics Elliptic partial differential equations of second order Fractional partial differential equations and their numerical solutions 并列题名:Hyperbolic partial differential equations and geometric optics 并列题名:Fractional partial differential equations and their numerical solutions