I like to answer more introductory questions, especially about basic calculus. The issues are usually more subtle.
I also enjoy enumerative combinatorics (counting). My master's thesis dealt with abelian difference sets, their uses and constructions, existence proofs, and such. I may do my doctorate someday, but we shall see. I am tired and old, and I do not like formal academia very much.
I do like jazz, my dog, and my wife. That is not an ordered list.
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