Like most of the math bloggers who are still students, I’ve recently gone through a quiet spell, due to various exams (functional analysis and algebraic topology), plus the EBL-SLALM event in Paraty, where I talked about a conjecture of Erdős. I’ve got something like half a dozen nearly-finished posts (unfortunately, at that stage where it’s just polishing, and not that much fun to write), and another half-dozen in the oven, so don’t lose hope!
Meanwhile, here’s a surprising fact. By far the most popular search which brings people to this blog is “borel-cantelli lemma” and “borel-cantelli proof”. I guess it’s listed as an exercise in a lot of textbooks!