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7 votes
1 answer
757 views

Length of nearest neighbor path in travel salesman problem

Given $n$ nodes uniformly distributed in $[0,1]^2$, consider the nearest neighbor algorithm to solve traveling salesman problem, i.e., each time I select the nearest neighbor not visited so far as the ...
lchen's user avatar
  • 367
4 votes
2 answers
2k views

Do Random Walks on the Hexagonal Lattice have a limit?

For every positive integer $n$, consider a regular hexagon $\mathrm{H}_n$ such that the distance of each vertex from the center is $\frac{1}{\sqrt{n}}$. That in turn induces a tiling of $\mathbb{R}^...
Ritwik's user avatar
  • 3,245
11 votes
2 answers
968 views

Clique sizes in a unit disk graph

This is a spiritual successor to a question that Peter Shor answered here: Generalized Euclidean TSP Are there any results known on the asymptotic behavior of clique sizes in a unit disk graph with ...
John Gunnar Carlsson's user avatar
15 votes
2 answers
755 views

Random noncrossing chords of a circle

Suppose you generate random chords of a circle, with endpoints selected uniformly over the circumference, rejecting any chord that crosses a previously generated chord. The disk is then partitioned ...
Joseph O'Rourke's user avatar