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when toggle format what by license comment
Aug 31, 2018 at 8:25 comment added Guillaume Aubrun Some authors call it a principal submatrix.
Aug 31, 2018 at 8:22 comment added BayesianMonk I am pretty sure that there exists a specific name for this but I cannot remember it!
Aug 31, 2018 at 8:16 history answered Federico Poloni CC BY-SA 4.0