Define convex

[takasimiz]

Is it the popular one or something else?

What's a difference between conv and a fix point?

Ind conv X f: X -> Y := ....

[takasimiz]

If you wanna compare a global alg vs a local opt, I guess a concrete definition of what a convex is is needed.

Alg A \ Alg B	Local	Global
Local	Concrete	Concrete
Global	Concrete	Abstruct