Hello, > >> abs(matrix) is currently returning the determinant (and this goes back > >> to the early implementation in 2006!). If anybody contests the fact > >> that it should return the matrix whose entries are the absolute value > >> of the initial matrix, please tell me. > > > > I don't think that it should be the matrix consisting of absolute > > values of entries, since that only works for matrices over a ring with > > an absolute value. Using > > it as a determinant is consistent with standard notation, though I > > agree that we don't usually say absolute value in this context. > > abs(m) is not a standard notation for the determinant... (though |m| > is as Simon mentioned). My conclusion is that we should just forbid > __abs__ for matrices. > I would also be in favour of deprecating this.
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