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Answers
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7
Modern algebraic geometry vs. classical algebraic geometry
10
What elementary problems can you solve with schemes?
33
Should the formula for the inverse of a 2x2 matrix be obvious?
32
Zagier’s one-sentence proof of Fermat’s theorem.
6
Abstract Thought vs Calculation
21
Why is the fundamental group of a compact Riemann surface not free ?
0
On linear independence of exponentials
17
Slick ways to make annoying verifications
8
Elementary results with p-adic numbers
9
Algorithm or theory of diagram chasing
13
Toy Models of Quantum Mechanics
18
A set for which it is hard to determine whether or not it is countable.
7
Simple but serious problems for the edification of non-mathematicians
4
The Fundamental Theorem of Calculus in Lebesgue Theory
46
How to picture $\mathbb{C}_p$?
4
Algebraic geometry used “externally” (in problems without obvious algebraic structure).
2
Angle Maximizing the Distance of a Projectile
1
Deeper meanings of barycentric subdivision
10
One point in the post of Terence Tao on Ax-Grothendieck theorem
3
What is the simplest, most elementary proof that a particular number is transcendental?
4
Flatness and local freeness
9
Shape of snowflakes
1
Is the ultraproduct concept fundamentally category-theoretic?
13
Liouville’s theorem with your bare hands
4
$\exists$ a shot in ideal pocket billiards?
6
a mathematically rigorous introduction to game theory
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Direct construction of the Stone-Čech compactification using ultrafilters?
15
Algebraic P vs. NP
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Can a certain sum converge to 0?
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Special cases of Dirichlet’s theorem
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