11

Answers
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7
What is your favorite isomorphism?
6
Problems where we can’t make a canonical choice, solved by looking at all choices at once
5
What’s your favorite equation, formula, identity or inequality?
4
Which mathematicians have influenced you the most?
4
Where is number theory used in the rest of mathematics?
3
How do you decide whether a question in abstract algebra is worth studying?
3
Proofs that require fundamentally new ways of thinking
3
the central issues in complex geometry
2
Positive vector bundles
1
Atiyah Bott localisation applied to Euler characteristic
1
Why were matrix determinants once such a big deal?