News for hackers. Stuff that matters.

A comment on Differentiation for Hackers. Parent comment

Re:Differentiation for Hackers by eli_gottlieb on Saturday June 22, 2019 @12:48PM (#20250501)
Autodiff only works because analytical calculus can prove that differentiation is a functor over functions.
[ Parent | on HN ]
Re:Differentiation for Hackers by jjtheblunt on Saturday June 22, 2019 @02:20PM (#20250946)
over continuous functions?
[ Parent | on HN ]
Re:Differentiation for Hackers by eli_gottlieb on Sunday June 23, 2019 @02:31PM (#20257681)
Well technically, over differentiable functions, but yes. Derivatives can be evaluated by decomposing functions, taking elementary derivatives, and recomposing the functions, in a way that integrals can't be.
[ Parent | on HN ]