John Stillwell

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Name John Stillwell
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11

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Jokes in the sense of Littlewood: examples? [closed]

dec 10 at 11:42 Michael Hardy 4,439●1●22●48

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What are the most elegant proofs that you have learned from MO?

jul 25 11 at 3:13 Ali Enayat 4,459●1●9●23

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Books you would like to see translated into English.

jan 3 12 at 5:02 Yemon Choi 8,437●1●19●44

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Are any natural examples of Gödel speed-up known?

may 19 11 at 5:27 John Stillwell 8,121●5●41●79

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In search of an early picture of Max Dehn

jun 4 at 6:08 Dirk 1,767●8●22

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118

Answers
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68
What are the most attractive Turing undecidable problems in mathematics?
48
Major mathematical advances past age fifty (2)
41
Your favorite surprising connections in Mathematics
37
New proofs to major theorems leading to new insights and results?
34
Widely accepted mathematical results that were later shown wrong?
34
What is the difference between matrix theory and linear algebra?
33
What are some famous rejections of correct mathematics? (2)
30
What are some examples of colorful language in serious mathematics papers?
29
nontrivial theorems with trivial proofs
28
What is the Cayley projective plane?
28
What was Gödel’s real achievement?
24
Counterexamples in Algebra?
24
What are some examples of “chimeras” in mathematics?
23
Turning pants inside-out (or backwards) while tied together
22
Books about history of recent mathematics
22
Fundamental groups of noncompact surfaces
22
Pair of curves joining opposite corners of a square must intersect---proof?
22
Demonstrating that rigour is important
21
Theorems that are ‘obvious’ but hard to prove
21
Do you read the masters?
20
Which math paper maximizes the ratio (importance)/(length)?
19
What are your favorite instructional counterexamples?
19
Most ‘unintuitive’ application of the Axiom of Choice?
19
What Are Some Naturally-Occurring High-Degree Polynomials?
19
Applications of infinite graph theory
19
Does anyone know a polynomial whose lack of roots can’t be proved?
19
Proofs that require fundamentally new ways of thinking
17
Mathematicians failing to solve problems despite having all methods required
17
Work of ICM 2010 plenary speakers (and other humans) (2)
17
Historically first uses of mathematical induction
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