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Questions that are about research in mathematics, or about the job of a research mathematician, without being mathematical problems or statements in the strictest sense. Do not use this tag for easy or supposedly easy mathematical questions.

3 votes

Applications of ZFA-Set Theory

Arnold Oberschelp used urelements in his relative consistency proof of a set theory with a universal set and the singleton function as a set. I followed his example in my variant of Alonzo Church’s “ …
Flash Sheridan's user avatar
5 votes

Best tablet computer for mathematics

To address part of your question, the iPad is far more than a toy for mathematicians, especially for reading mathematical articles. Goodreader is the best means of reading and annotating PDFs I’ve ev …