Home › Forums › density functional theory › functions and functionals › Functional This topic has 0 replies, 1 voice, and was last updated 1 year, 2 months ago by Iulia ZAI. Viewing 1 post (of 1 total) Author Posts October 8, 2023 at 4:55 am #9378 Iulia ZAIParticipant A simple example of a functional would be the evaluation of a derivative at a special point, for instance to determine an area of interest underneath the graph of a positive function. 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