308 Video lectures of mathematics courses available online for free 2011-02-05T18:34:58.897

277 Thinking and Explaining 2010-09-14T02:13:50.010

240 Why do so many textbooks have so much technical detail and so little enlightenment? 2010-01-27T01:52:40.797

235 Widely accepted mathematical results that were later shown to be wrong? 2010-08-13T10:12:59.930

210 Mathematical games interesting to both you and a 5+-year-old child 2017-09-18T21:29:35.607

207 A single paper everyone should read? 2009-10-23T18:42:05.273

207 What are some examples of colorful language in serious mathematics papers? 2010-04-23T05:01:02.703

203 Examples of unexpected mathematical images 2014-08-09T07:01:31.603

191 What's a mathematician to do? 2010-10-26T16:53:25.853

188 Refereeing a Paper 2010-08-24T22:45:04.400

179 Awfully sophisticated proof for simple facts 2010-10-17T15:16:59.150

177 Intuitive crutches for higher dimensional thinking 2010-05-26T09:49:53.130

176 Fundamental Examples 2009-11-11T07:52:13.173

170 Have any long-suspected irrational numbers turned out to be rational? 2010-07-22T16:06:17.797

168 Your favorite surprising connections in Mathematics 2010-02-08T00:10:18.557

151 Magic trick based on deep mathematics 2009-12-25T22:07:11.903

150 Most interesting mathematics mistake? 2009-10-17T14:28:43.527

147 Do good math jokes exist? 2009-10-18T21:47:45.010

147 What are your favorite instructional counterexamples? 2010-03-02T05:57:45.173

146 Best online mathematics videos? 2009-10-21T20:21:43.117

141 Famous mathematical quotes 2009-11-29T20:18:38.147

141 Interesting mathematical documentaries 2012-06-19T18:47:55.263

138 Examples of great mathematical writing 2009-10-12T17:12:16.123

138 Which math paper maximizes the ratio (importance)/(length)? 2009-12-01T01:12:30.173

137 Most harmful heuristic? 2009-10-24T20:54:56.270

132 Too old for advanced mathematics? 2009-11-29T08:44:17.350

126 How does one justify funding for mathematics research? 2014-07-11T13:55:15.687

122 Generalizing a problem to make it easier 2010-09-26T08:09:31.003

122 What non-categorical applications are there of homotopical algebra? 2014-06-06T06:50:41.107

119 Jokes in the sense of Littlewood: examples? 2010-09-15T18:30:40.780

117 How to escape the inclination to be a universalist or: How to learn to stop worrying and do some research. 2010-08-17T15:30:57.800

115 When and how is it appropriate for an undergraduate to email a professor out of the blue? 2010-08-04T18:19:56.767

115 Most memorable titles 2010-10-31T14:11:28.240

115 How To Present Mathematics To Non-Mathematicians? 2010-11-24T09:29:31.743

111 Most helpful math resources on the web 2009-10-23T18:54:36.030

110 What are the most misleading alternate definitions in taught mathematics? 2009-12-02T15:59:43.357

105 Why are flat morphisms "flat?" 2009-11-25T11:41:08.330

104 How do you keep your research notes organized? 2009-10-22T02:38:40.237

104 Are there examples of non-orientable manifolds in nature? 2010-11-12T15:04:51.417

101 Counterexamples in Algebra? 2010-06-21T23:10:07.347

100 Periods and commas in mathematical writing 2009-11-24T11:00:37.490

97 eBook readers for mathematics 2010-07-04T12:59:45.767

97 Mathematical habits of thought and action which would be of use to non-mathematicians 2011-09-07T03:45:14.740

94 What recent discoveries have amateur mathematicians made? 2010-10-30T14:20:24.430

94 Does Physics need non-analytic smooth functions? 2012-11-26T16:58:48.853

93 Which popular games are the most mathematical? 2010-02-01T09:42:11.693

93 What are some famous rejections of correct mathematics? 2010-02-03T00:50:28.910

93 What are some very important papers published in non-top journals? 2015-11-06T16:38:14.340

91 Which mathematicians have influenced you the most? 2009-11-14T13:28:17.443

90 New grand projects in contemporary math 2012-12-30T21:08:08.743

90 Mistakes in mathematics, false illusions about conjectures 2014-06-03T12:06:13.590

90 What is the most useful non-existing object of your field? 2014-09-28T21:58:53.573

89 When should a result be made into a paper? 2010-10-10T22:41:58.550

86 How do you decide whether a question in abstract algebra is worth studying? 2010-09-24T06:17:01.583

85 Work of plenary speakers at ICM 2014 2013-10-17T10:28:19.270

84 How do I see LaTeX math on any web page and in email? 2010-04-22T02:19:12.500

84 Analogues of P vs. NP in the history of mathematics 2014-03-13T20:12:02.987

83 How Much Work Does it Take to be a Successful Mathematician? 2009-12-26T16:16:34.237

81 Top specialized journals 2009-10-31T05:13:36.823

80 Mathematicians who were late learners?-list 2009-10-31T20:34:53.330

80 Is there a database for tracking the dependencies of mathematical theorems? 2016-09-08T17:53:43.413

79 What is the definition of "canonical"? 2010-03-28T18:16:39.353

78 Can a mathematical definition be wrong? 2010-07-11T04:18:27.257

77 Which are the best mathematics journals, and what are the differences between them? 2009-09-30T22:14:11.017

77 Quick proofs of hard theorems 2010-05-16T19:11:01.790

77 Modern Mathematical Achievements Accessible to Undergraduates 2013-05-05T19:02:58.223

76 Theorems with unexpected conclusions 2010-03-13T21:15:12.933

76 What is the oldest open problem in mathematics? 2010-06-04T18:30:16.613

76 Blackbox Theorems 2012-06-13T20:58:36.810

75 How does an academic mathematician educate him/herself about job opportunities outside academia? 2010-05-05T01:16:45.063

75 Are there any good websites for hosting discussions of mathematical papers? 2011-01-03T20:14:46.187

75 Why should one still teach Riemann integration? 2011-01-21T02:25:40.993

74 Why is it a good idea to study a ring by studying its modules? 2009-11-12T19:55:23.767

73 Favorite popular math book 2009-12-11T22:11:12.853

73 Depressed graduate student. 2010-01-02T00:07:33.040

73 Pseudonyms of famous mathematicians 2010-11-07T17:56:35.487

73 How do you not forget old math? 2013-09-27T07:46:39.277

72 How has "what every mathematician should know" changed? 2010-03-25T21:34:00.523

71 What is sheaf cohomology intuitively? 2010-09-16T12:39:18.877

71 More open problems 2010-12-04T20:12:03.513

71 Theorems that are 'obvious' but hard to prove 2011-01-09T11:19:49.657

71 What notions are used but not clearly defined in modern mathematics? 2011-02-25T20:43:24.550

70 Have you solved problems in your sleep? 2014-04-27T00:19:23.330

70 Parodies of abstruse mathematical writing 2015-03-14T00:19:01.867

70 Coming out as transgender in the mathematical community 2017-11-26T00:01:09.333

69 Tools for long-distance collaboration 2010-12-14T13:11:45.687

68 What's a nice argument that shows the volume of the unit ball in $\mathbb R^n$ approaches 0? 2009-12-08T22:08:04.490

68 Why didn't Vladimir Arnold get the Fields Medal in 1974? 2010-06-05T09:07:41.550

68 How to write popular mathematics well? 2011-12-21T19:04:01.580

68 Proofs shown to be wrong after formalization with proof assistant 2018-01-21T01:29:30.550

67 books well-motivated with explicit examples 2009-12-06T04:05:23.357

67 Good papers/books/essays about the thought process behind mathematical research 2010-05-13T17:49:36.667

67 Why are matrices ubiquitous but hypermatrices rare? 2010-12-02T13:21:14.013

67 Examples of theorems with proofs that have dramatically improved over time 2012-05-03T10:07:24.083

66 When should you, and should you not, share your mathematical ideas? 2010-10-27T03:39:47.607

66 What could be some potentially useful mathematical databases? 2011-06-21T22:05:43.347

66 Lost soul: loneliness in pursing math. Advice needed. 2012-10-19T02:00:19.053

65 Which mathematical ideas have done most to change history? 2010-02-01T14:43:02.030

65 Good ways to engage in mathematics outreach? 2010-12-28T04:37:08.930