Has anyone else found that this is not the best way of describing higher math? I feel like abstract is not a good categorization of higher maths. I've found the hard parts, what I spend most my time on and what's the hardest to keep track of are technical things and subtle details. Random variables converge in many different ways, probability, distribution, mean, almost surely, etc. Some modes of convergence imply other modes, and under certain conditions those other modes imply the first modes, but not always. I wouldn't really call it abstract, just technical and detailed. I'm not saying there isn't abstraction, because there is, it's just that it's not the first word I would use. Would you call higher math "abstract"? Is there a better word?