« first day (2548 days earlier)      last day (1358 days later) » 

Martin Sleziak
Martin Sleziak
9:41 AM
specific-question This question was recently bumped by a new answer: How to partition R^3 into pairwise non-parallel lines? The tag tag-removed should be removed. And we could also replace the deprecated tag - I guess mg.metric-geometry could be a suitable candidate.
5
Q: How to partition R^3 into pairwise non-parallel lines?

subshiftProblem. How to partition R^3 into pairwise non-parallel lines? A possible solution is to stack infinitely many ``concentric'' hyperboloids, by increasing radius and decreasing slope. And don't forget the line on the $z$ axis at the center. The prototype hyperboloid looks like this. I heard a t...

geometry gn.general-topology fibre-bundles tag-removed
 

« first day (2548 days earlier)      last day (1358 days later) »