A factorization algorithm to compute Pfaffians

Details A factorization algorithm to compute Pfaffians A factorization algorithm to compute Pfaffians

2011-02-17

arxiv.org/abs/1102.3576v2

Comput.Phys.Commun.182:2530-2532,2011

Physics

High Energy Physics

High Energy Physics - Lattice

6 pages, 1 figure, V2: Minor changes in the text and refs. added, to appear in CPC

Scientific paper

10.1016/j.cpc.2011.07.010

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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