yes Bernstein-schroeder wasn't interesting except in its "universality". Cantor diagonalization yes was very formative for me in my mathematical maturation and

yes Bernstein-schroeder wasn't interesting except in its "universality". Cantor diagonalization yes was very formative for me in my mathematical maturation and Godel too but no the complexity towers - recursively enumerable and nondenumerable don't interest me (or whatever the class that NP belongs to is called - I've forgotten most of the recursion theory I learned now). so yes computability theory was very boring to me. in the parlance I'm a geometer rather than an algebraist (so analysis, manifolds, relativity, etc.)