400

Answers

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250

Proofs without words

229

Famous mathematical quotes (10)

69

Periods and commas in mathematical writing

59

Most memorable titles (3)

42

Why do so many textbooks have so much technical detail and so little enlightenment?

38

Can infinity shorten proofs a lot?

37

What the heck is the Continuum Hypothesis doing in Weibel’s Homological Algebra?

35

ADE type Dynkin diagrams (5)

31

Fundamental Examples

28

Can the symmetric groups on sets of different cardinalities be isomorphic?

28

What are some examples of colorful language in serious mathematics papers?

27

Experimental Mathematics

27

Old books still used

26

Geodesics on spheres are great circles

26

Is a topology determined by its convergent sequences?

26

Is there a name for this algebraic structure?

24

Permutation representation inner product (2)

23

Should there be a specified standard knowledge of mathematicians?

22

Explanation why $x,y,z$ are always variables

22

Thinking and Explaining

22

Proving “almost all matrices over C are diagonalizable”.

21

Are all Hawaiian Earrings homeomorphic?

20

Sheaves and Differential Equations

20

Heuristic behind $A_{\infty}$ - algebras

19

Compact surfaces of negative curvature

19

What is your favorite “strange” function?

19

Modular Arithmetic in LaTeX

19

Which journals publish expository work?

19

Favourite scholarly books? (3)

18

Good Algebraic Number Theory Books