I am sorry to ask. There was an MO Q. by me (which addressed in an elementary way the infinity axiom, actually by just providing another formulation of algebraic flavor). I have carelessly deleted my Q. without quite committing it to memory or other media.
I see that there is a bunch of related meta-questions about the deleted MO-posts but somehow I am not able to take advantage of them and the answers. I just see that any moderator can help--thus, please, help. Thank you.