Home › Forums › density functional theory › functions and functionals › functional This topic has 0 replies, 1 voice, and was last updated 1 week, 5 days ago by kkm. Viewing 1 post (of 1 total) Author Posts October 5, 2025 at 9:47 am #13410 kkmParticipant The Velocity of a particle is a FUNCTION. The rate of change of VELOCITY is ACCELERATION and is a functional. 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