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math.CO2003
Concave cocirculations in a triangular grid
Alexander V. Karzanov
Let be a planar digraph embedded in the plane in which all inner faces are equilateral triangles (with three edges in each), and let the union $\Rscr$ of these face…
math.CO2003
Maximum Skew-Symmetric Flows and Matchings
Andrew V. Goldberg, Alexander V. Karzanov
The maximum integer skew-symmetric flow problem (MSFP) generalizes both the maximum flow and maximum matching problems. It was introduced by Tutte in terms of self-conjugate flows…