Joel David Hamkins's user avatar
Joel David Hamkins's user avatar
Joel David Hamkins's user avatar
Joel David Hamkins
  • Member for 14 years, 4 months
  • Last seen this week
382 votes

What are some reasonable-sounding statements that are independent of ZFC?

262 votes

What are the most misleading alternate definitions in taught mathematics?

235 votes
Accepted

Is the analysis as taught in universities in fact the analysis of definable numbers?

171 votes

Most 'unintuitive' application of the Axiom of Choice?

171 votes
Accepted

Solutions to the Continuum Hypothesis

147 votes
Accepted

Nontrivial theorems with trivial proofs

140 votes
Accepted

Reductio ad absurdum or the contrapositive?

136 votes

Has philosophy ever clarified mathematics?

136 votes
Accepted

Why do we have two theorems when one implies the other?

133 votes

What is a chess piece mathematically?

125 votes

The most outrageous (or ridiculous) conjectures in mathematics

114 votes

Examples of common false beliefs in mathematics

113 votes

Why worry about the axiom of choice?

105 votes

Theorems with unexpected conclusions

105 votes

Where to buy premium white chalk in the U.S., like they have at RIMS?

105 votes
Accepted

Have you solved problems in your sleep?

98 votes
Accepted

Adapting arguments and plagiarism

94 votes

Mistakes in mathematics, false illusions about conjectures

86 votes

Examples of common false beliefs in mathematics

84 votes

Examples of eventual counterexamples

84 votes

Has incorrect notation ever led to a mistaken proof?

82 votes

Value of "of course" in the mathematical literature

79 votes

Which mathematical ideas have done most to change history?

78 votes

What are some reasonable-sounding statements that are independent of ZFC?

78 votes
Accepted

Will this Turing machine find a proof of its halting?

72 votes

Jokes in the sense of Littlewood: examples?

71 votes

Can a problem be simultaneously polynomial time and undecidable?

71 votes
Accepted

What's wrong with the surreals?

71 votes

Nontrivial theorems with trivial proofs

70 votes
Accepted

A remark of Connes on non-standard analysis

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