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5 votes
1 answer
315 views

On optimal dual solutions for the minimum weight perfect matching problems in the case of metric weights

Following Lovasz-Plummer (Matching theory, North-Holland 1986, Theorem 9.2.1), the minimum weight perfect matching problem on a complete graph $G$ with even number of vertices and weight $w:E(G)\to \...
Mikhail Ostrovskii's user avatar
4 votes
2 answers
318 views

Connecting $2n$ points in $\mathbb R^2$ with line segments s.t. each point belongs to exactly one line segment

I'm trying to do a certain simulation related to the toric code and I'm looking for an algorithm that connects $2n$ points ($n \in \mathbb Z_+$) in $\mathbb R^2$ with line segments with the following ...
Sanchayan Dutta's user avatar
1 vote
1 answer
104 views

Symmetry of optimal solutions to symmetric assignment problems

Is there a sound proof of or a counter example to the following conjecture: if $\boldsymbol{A}^T=\boldsymbol{A}$ is the cost-matrix of a bipartite assignment problem with unique optimal assignment, ...
Manfred Weis's user avatar
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1 vote
0 answers
17 views

Complexity of optimal cartesian matching

Question: what is known about the algorithmic aspects of optimally matching a set $\mathcal{P} = \prod\limits_{i=1}^n \left(1,\,\cdots,\,k_i\right)$ of grid-points to a set of $\prod\limits_{i=1}^...
Manfred Weis's user avatar
  • 13.2k
-2 votes
1 answer
174 views

What is known about iterated matching as a TSP heuristic

A fairly wellknown heuristic for TSP that is based on matching is described in the 2003 paper Match twice and stitch: a new TSP tour construction heuristic by Andrew B. Kahng and Sherief Reda. Its ...
Manfred Weis's user avatar
  • 13.2k