One approach you may want to take to staying on top of things is going through problem books in mathematics. There are several goods one, Berkeley Problems in Mathematics being one of them.
Munkres is usually the standard undergrad text for Math majors. Alternatives you may consider include 'Introduction to Topology' by Bert Mendelson, very good introduction and Dover publications make it quite a bit cheaper than Munkres.
The other alternative that comes to mind is Introduction to...
Hi All,
I am contemplating which graph theory text to purchase. I am stuck between
a) Graph Theory by Bondy and Murty
B) Graph Theory by Richard Diestel
I have already been through Trudeau's intro text on my own and am looking for something deeper and more advanced. I am...
You'd definitely need Statistics (atleast i year long sequence at my university) beyond that it depends on what area of the social sciences you're working in. Social networks are being analyzed using graph theory and what not.
This is as much as I know. Hope it helps