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Aug
26
awarded  Popular Question
Jul
23
awarded  Popular Question
Jul
23
awarded  Yearling
Jun
25
comment Comparing geodesics on a hypersphere
@AmitaiYuval maybe I misunderstood your comment, but I'm not interested in the distance between the two sets, rather I'm looking to see if the two paths moving along the hypercoordinates in the same way. I know that this is vague (hence the question), but imagine a normal two sphere: you can parameterize it by spherical coordinates $\phi, \psi$. Two arcs would be 100% similar if the change along the parametrized paths would invoke approximately the same change in these coordinates.
Jun
25
comment Comparing geodesics on a hypersphere
@AmitaiYuval there is absolutely no guarantee that they intersect, in fact most of them don't.
Jun
25
asked Comparing geodesics on a hypersphere
Jun
3
accepted Spare storage of a tree
Jun
2
comment Spare storage of a tree
Perfect! I was looking for a labeling like this! I knew there was some $N$ at which you couldn't store a tree using a single 64-bit integer -- obviously there are an infinite such trees.
Jun
2
comment Spare storage of a tree
@Gamamal even for connected graphs, isn't every tree a spanning tree to some graph? For example, shouldn't every tree be a spanning tree to the complete graph?
Jun
2
comment Spare storage of a tree
@Gamamal there was no restriction that the graph had to be connected, thus a spanning tree might not exist.
Jun
2
comment Spare storage of a tree
This question may be more suited for one of the CS SE's, if you agree let me know and I can close and repost.
Jun
2
asked Spare storage of a tree
May
27
revised If I know the order of every element in a group, do I know the group?
word "order" was doubled (typo), corrected to obvious intention
Apr
26
accepted What is a $0\times0$ or $0\times3$ matrix?
Apr
25
comment What is a $0\times0$ or $0\times3$ matrix?
@DavidH Since this question has been around for awhile, do you want to write up your comment as an answer? I'll accept it if you do and essentially close this question.
Apr
20
comment Percolation over the integers
I'm unsure why I this question has both a favorite (STAR) and a downvote. If the question is poor, please let me know how to improve it or provide some additional feedback!
Apr
20
asked Percolation over the integers
Mar
17
accepted Use of FFT in the multiplication of multinomials
Mar
5
comment “The Egg:” Bizarre behavior of the roots of a family of polynomials.
@Stephen Look at the dates posted. The answer by myself and Gottfried Helms against the above post are about two years apart. There is often a correlation between delayed answers and score (though not always).
Feb
14
comment What gambling/board game or real life thing can (surprisingly) be modelled as a linear programming problem?
I'm not sure what you are looking for in an answer. I'm giving you a couple of really neat cutting edge problems concerning transportation, but it is sometimes surprising that linear programming can handle such large problems in practice.