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Josh Lackman
  • Member for 8 years, 8 months
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281 answers
979 votes
310k views
1k bookmarks
Examples of common false beliefs in mathematics
79 answers
380 votes
174k views
473 bookmarks
Proofs without words
22 answers
363 votes
57k views
377 bookmarks
Thinking and Explaining
51 answers
340 votes
111k views
287 bookmarks
Widely accepted mathematical results that were later shown to be wrong?
22 answers
311 votes
96k views
249 bookmarks
Why do so many textbooks have so much technical detail and so little enlightenment?
34 answers
307 votes
82k views
392 bookmarks
Why is a topology made up of 'open' sets?
34 answers
271 votes
43k views
223 bookmarks
What are some reasonable-sounding statements that are independent of ZFC?
67 answers
247 votes
120k views
277 bookmarks
Awfully sophisticated proof for simple facts
37 answers
224 votes
146k views
402 bookmarks
Best algebraic geometry textbook? (other than Hartshorne)
83 answers
216 votes
38k views
230 bookmarks
Your favorite surprising connections in mathematics
140 answers
215 votes
46k views
310 bookmarks
Fundamental Examples
4 answers
213 votes
13k views
107 bookmarks
Is $\mathbb R^3$ the square of some topological space?
15 answers
213 votes
55k views
210 bookmarks
Why worry about the axiom of choice?
67 answers
212 votes
41k views
235 bookmarks
Proofs that require fundamentally new ways of thinking
40 answers
204 votes
35k views
189 bookmarks
Demonstrating that rigour is important
49 answers
201 votes
72k views
218 bookmarks
Ways to prove the fundamental theorem of algebra
30 answers
196 votes
74k views
241 bookmarks
Real-world applications of mathematics, by arxiv subject area?
71 answers
192 votes
44k views
275 bookmarks
What are your favorite instructional counterexamples?
25 answers
191 votes
44k views
116 bookmarks
The most outrageous (or ridiculous) conjectures in mathematics
94 answers
179 votes
99k views
263 bookmarks
Famous mathematical quotes
58 answers
177 votes
37k views
148 bookmarks
Examples of eventual counterexamples
36 answers
171 votes
38k views
250 bookmarks
Are there other nice math books close to the style of Tristan Needham?
28 answers
162 votes
50k views
150 bookmarks
Cool problems to impress students with group theory
13 answers
162 votes
43k views
128 bookmarks
Knuth's intuition that Goldbach might be unprovable
14 answers
149 votes
35k views
154 bookmarks
What is an integrable system?
13 answers
148 votes
18k views
121 bookmarks
Why is the fundamental group of a compact Riemann surface not free ?
31 answers
142 votes
24k views
95 bookmarks
Extremely messy proofs
43 answers
137 votes
25k views
108 bookmarks
nontrivial theorems with trivial proofs
59 answers
135 votes
28k views
137 bookmarks
Jokes in the sense of Littlewood: examples?
69 answers
134 votes
200k views
384 bookmarks
Mathematical "urban legends"
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