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    • CommentRowNumber1.
    • CommentAuthorMurat_Aygen
    • CommentTimeFeb 14th 2018
    • (edited Feb 14th 2018)

    If one solves


    for x’s when b’s are given, one ends up with


    where \eta is the INCIDENCE MATRIX! Then all proofs about 0-homology groups are just about the ranks of square-submatrices of this matrix. Am I right?