Hi, I want to know difference that between 'functional' and 'function'.
Of course, in Wikipedia, http://en.wikipedia.org/wiki/Functional_(mathematics), there is many texts.
But what's the simple answer for this question? ;-)
MathOverflow is a question and answer site for professional mathematicians. It only takes a minute to sign up.
Sign up to join this communityHi, I want to know difference that between 'functional' and 'function'.
Of course, in Wikipedia, http://en.wikipedia.org/wiki/Functional_(mathematics), there is many texts.
But what's the simple answer for this question? ;-)
No difference really, just convention.
A functional normally acts on other functions, whereas a function normally acts on some underlying vector space or field. But this is not always true.