Apparently, this user prefers to keep an air of mystery about them.
13 The Surreal numbers satisfy all the field axioms except that its elements constitute a proper class. Is it safe to call it a field? dec 7 '12
6 Is there a conceptual reason why topological spaces have quotient structures while metric spaces don't? mar 6 '13
4 What is an ideal-supporting algebra? feb 12 '13