MathOverflow by Kiwix

Q&A for professional mathematicians

Most popular questions

835 Examples of common false beliefs in mathematics 2010-05-04T21:02:58.510

477 Polynomial bijection from $\mathbb Q\times\mathbb Q$ to $\mathbb Q$? 2010-04-11T12:03:13.993

372 Why do roots of polynomials tend to have absolute value close to 1? 2014-10-02T20:54:13.120

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

349 Proofs without words 2009-12-14T06:04:14.923

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

323 Not especially famous, long-open problems which anyone can understand 2012-06-21T18:30:34.743

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

290 Geometric interpretation of trace 2010-01-31T01:49:07.330

282 Philosophy behind Mochizuki's work on the ABC conjecture 2012-09-07T01:06:48.947

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

277 Polynomial representing all nonnegative integers 2009-12-25T06:40:19.630

276 Why is a topology made up of 'open' sets? 2010-03-23T22:25:01.557

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

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

251 Which journals publish expository work? 2010-02-15T21:24:03.663

243 What are some reasonable-sounding statements that are independent of ZFC? 2009-10-22T19:26:48.983

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

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

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

221 John Nash's Mathematical Legacy 2015-05-24T15:58:37.680

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

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

214 Conway's lesser-known results 2020-04-12T01:50:36.827

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

206 What elementary problems can you solve with schemes? 2011-03-21T15:48:21.763

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

203 A Game on Noetherian Rings 2012-04-06T03:24:54.820

202 If $f$ is infinitely differentiable then $f$ coincides with a polynomial 2010-07-31T21:37:22.197

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

196 Best algebraic geometry textbook? (other than Hartshorne) 2009-10-25T10:19:33.363

195 Is there an introduction to probability theory from a structuralist/categorical perspective? 2010-04-08T15:18:55.203

194 Proofs that require fundamentally new ways of thinking 2010-12-09T15:08:32.523

191 Why worry about the axiom of choice? 2010-04-29T02:57:58.080

190 Is $\mathbb R^3$ the square of some topological space? 2011-04-02T18:42:06.113

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

188 Demonstrating that rigour is important 2010-09-03T13:08:22.820

187 How can a mathematician handle the pressure to discover something new? 2018-03-11T13:39:40.263

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

184 Real-world applications of mathematics, by arxiv subject area? 2009-10-26T04:38:56.293

182 Ways to prove the fundamental theorem of algebra 2010-01-02T22:11:26.197

180 Two commuting mappings in the disk 2009-10-29T20:16:45.327

179 Issue UPDATE: in graph theory, different definitions of edge crossing numbers - impact on applications? 2020-07-28T07:51:28.653

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

176 What is torsion in differential geometry intuitively? 2010-04-06T13:00:40.060

176 How to memorise (understand) Nakayama's lemma and its corollaries? 2011-04-12T19:02:53.887

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

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

172 Why doesn't mathematics collapse even though humans quite often make mistakes in their proofs? 2019-08-18T12:32:00.483

171 Books you would like to read (if somebody would just write them...) 2011-01-24T10:23:39.420


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