Home › Forums › density functional theory › functions and functionals › Functional examples This topic has 0 replies, 1 voice, and was last updated 2 years, 2 months ago by ilias.vandevenne. Viewing 1 post (of 1 total) Author Posts October 3, 2022 at 9:40 am #6793 ilias.vandevenneParticipant In classical/Lagrangian mechanics the action s in a functional (s = F[L]) from the Lagrangian (L = T-V). Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In