267

Answers

votes newest views recent

113

Examples of common false beliefs in mathematics.

5

Proofs without words

1

Video lectures of mathematics courses available online for free

9

Awfully sophisticated proof for simple facts

5

Jokes in the sense of Littlewood: examples?

4

Applications of the Chinese remainder theorem

29

Counterexamples in Algebra?

8

Algebraic geometry examples

8

What are examples of mathematical concepts named after the wrong people? (Stigler’s law)

51

Blackbox Theorems (4)

10

Is there a nice application of category theory to functional/complex/harmonic analysis?

6

Should the formula for the inverse of a 2x2 matrix be obvious?

1

Sexy vacuity …

5

Is there a slick proof of the classification of finitely generated abelian groups?

10

Categories First Or Categories Last In Basic Algebra?

15

Does any research mathematics involve solving functional equations?

4

Proofs of the uncountability of the reals.

10

A symbol to denote the set of prime numbers ?

8

Canonical examples of algebraic structures

13

Proof synopsis collection

30

Rings in which every non-unit is a zero divisor

5

What’s the notation for a function restricted to a subset of the codomain?

9

Natural transformations as categorical homotopies

13

A Game on Noetherian Rings

3

How to introduce notions of flat, projective and free modules?

2

How should one think about non-Hausdorff topologies?

1

Arbitrary products of schemes don’t exist, do they?

11

Algebraic geometry used “externally” (in problems without obvious algebraic structure).

20

Elementary Number Theory Text from a Categorical Perspective

17

Geometric intuition for limits