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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.
9
votes
Proofs of theorems that proved more or deeper results than what was first supposed or stated...
Here is an example of this happening in 2019.
This article describes what happened.
We had nearly given up on getting the last piece and solving the riddle. We thought we had a minor result, one that …