A factorization algorithm to compute Pfaffians
classification
✦ hep-lat
cond-mat.stat-mechmath.NA
keywords
algorithmpfaffiansallowsantisymmetriccomputationcomputecostdescribe
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We describe an explicit algorithm to factorize an even antisymmetric N^2 matrix into triangular and trivial factors. This allows for a straight forward computation of Pfaffians (including their signs) at the cost of N^3/3 flops.
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