Courant 1943 + Argyris 1955 + Clough 1956 FEM: discretize PDE on simplicial mesh; weak form Galerkin minimization; basis of structural-analysis + electromagnetic-design + CFD.
Courant 1943 + Argyris 1955 + Clough 1956 FEM: discretize PDE on simplicial mesh; weak form Galerkin minimization; basis of structural-analysis + electromagnetic-design + CFD.