Are there meditation practices that improve logical problem solving skills?

I meditate daily, for around 30 minutes or so, I have been on and off for the last few yew years. I only ever do a simple breathing meditation and I find it tends to make my mind smoother and more relaxed (compared to days I do not sit). I am also in the process of becoming a mathematician (hopefully completing my PhD in the next few months). Before embarking on my PhD I worked in IT as a developer/support manager, so my work has always been fairly cerebral. Given this context, I was wondering - are there particular types of meditation that specifically improve mental ability ? I know one of the obvious answers is that solving a problem in pure math is really a form of meditation, and I should probably just continue with the daily grind. I'm hoping for a bit more though. Thanks