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View File Name :
sortcol.m2
i = id_(ZZ^1) f = 2 * i ++ 6 * i ++ 30 * i sortColumns f f = f _ oo assert( sortColumns f === toList ( 0 .. 2) ) f = matrix {{0, 0, 1}, {0, 3, 2}, {390, 103, 251}} sortColumns f f = f _ oo sortColumns f assert( sortColumns f === toList ( 0 .. 2) ) R = ZZ[a..d] m = matrix{{a,0,0,d},{0,0,c,0},{b^2,b^2,2*b^2,0}} sortColumns m m = m_oo sortColumns m assert( sortColumns m === toList ( 0 .. 3) )