There is significant overlap with Catalan.jl, the combinatorics package: https://github.com/andrioni/Catalan.jl
with code in the base linear algebra library to return pivoted matrix factorizations, e.g. https://github.com/JuliaLang/julia/blob/db8ffe8b47ad00879cb483f4edb205eea18cfbe3/base/linalg/factorization.jl#L72 For a pivoted matrix factorization F, F[:p] should really be a Permutation object and F[:P] is its matrix representation. Perhaps this should go into the base library at some point. Thanks, Jiahao Chen Staff Research Scientist MIT Computer Science and Artificial Intelligence Laboratory
