Thread: Push-forward ? View Single Post
 P: 55 Can someone help me understand what this is, in as simple terms as possible? If I have a function $$f: A\rightarrow B$$ and another one $$g:B\rightarrow C$$ I know the "pullback" $$f^{*}g: A\rightarrow C$$ is $$f^{*}g = g\circ f$$ (correct?) But what about the push forward $$f_{*}g$$? What is that? Thanks for any help.