Sven Czarnian 27b422d806 add Eigen as a dependency 3 lat temu
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Amd.h 27b422d806 add Eigen as a dependency 3 lat temu
Eigen_Colamd.h 27b422d806 add Eigen as a dependency 3 lat temu
Ordering.h 27b422d806 add Eigen as a dependency 3 lat temu