Search Results
| Search type | Search syntax |
|---|---|
| Tags | [tag] |
| Exact | "words here" |
| Author |
user:1234 user:me (yours) |
| Score |
score:3 (3+) score:0 (none) |
| Answers |
answers:3 (3+) answers:0 (none) isaccepted:yes hasaccepted:no inquestion:1234 |
| Views | views:250 |
| Code | code:"if (foo != bar)" |
| Sections |
title:apples body:"apples oranges" |
| URL | url:"*.example.com" |
| Saves | in:saves |
| Status |
closed:yes duplicate:no migrated:no wiki:no |
| Types |
is:question is:answer |
| Exclude |
-[tag] -apples |
| For more details on advanced search visit our help page | |
Results tagged with puzzle
Search options answers only
not deleted
user 1345
Recreational mathematics or puzzles with serious mathematical content. Note that math contest problems are generally considered off-topic.
5
votes
Accepted
Wrapping a suitcase with large rotational symmetry
Edit: my previous answer was incorrect
No, this one you cannot do. If one had such an arrangement of circles in the solid torus inside $R^3$, and quotiented by a rotation, then by the equivariant Dehn …
- 68.9k
11
votes
Can I wrap a suitcase with hair ties
I shared this question with Michael Freedman who came up with a solution similar to Larsen’s and asked me to post on his behalf.
He made a physical realization too.
I’ll address Anton’s question of …
6
votes
Math puzzles for dinner
Suppose 100 ants are placed randomly (with random orientations) along a yard stick. Each ant walks at a pace of an inch a minute. Each time two ants meet, they instantaneously reverse direction, and i …
34
votes
Is it possible to capture a sphere in a knot?
I would try to "gift wrap" the sphere. Take the 1-skeleton of the octahedron,
and take an Eulerian path. Then make each vertex into a twist, and pull tight, so that it looks like the union of three o …
- 68.9k