Why is it so common for pure mathematicians to start publishing "good" quality paper a bit late? Maybe towards the end of PhD or start of Post-doc. Whereas in some fields people start publishing research papers as early as in their masters.
I know there are some undergrad research programs, for e.g.- REU, but only in some cases do they get published; but not in some good quality journals. Most of the times they maybe just arxived or in some cases not even that.
I know some people, from different fields, who had 2 or 3 publications in their masters itself, while some of them are in their 2nd/3rd year of PhD and already have around 10 publications.
Maybe such a thing is also possible in mathematics, but there must be some good reason why mathematicians or graduate student, along with their supervisor, agree to publish good results in good journals, a bit late.