a Ям┌MutablePolyDenseMatrixax A mutable matrix of objects from poly module or to operate with them. Examples ======== >>> from sympy.polys.polymatrix import PolyMatrix >>> from sympy import Symbol, Poly >>> x = Symbol('x') >>> pm1 = PolyMatrix([[Poly(x**2, x), Poly(-x, x)], [Poly(x**3, x), Poly(-1 + x, x)]]) >>> v1 = PolyMatrix([[1, 0], [-1, 0]], x) >>> pm1*v1 PolyMatrix([ [ x**2 + x, 0], [x**3 - x + 1, 0]], ring=QQ[x]) >>> pm1.ring ZZ[x] >>> v1*pm1 PolyMatrix([ [ x**2, -x], [-x**2, x]], ring=QQ[x]) >>> pm2 = PolyMatrix([[Poly(x**2, x, domain='QQ'), Poly(0, x, domain='QQ'), Poly(1, x, domain='QQ'), Poly(x**3, x, domain='QQ'), Poly(0, x, domain='QQ'), Poly(-x**3, x, domain='QQ')]]) >>> v2 = PolyMatrix([1, 0, 0, 0, 0, 0], x) >>> v2.ring QQ[x] >>> pm2*v2 PolyMatrix([[x**2]], ring=QQ[x]) N)┌ringcsк|s,|durtdГВddgdf\}Й}}РnFt|dtГr▓|d|ddЕ}}|sfddg}Й}nJt|dttfГrЮt|Гt|dГ}ЙddД|DГ}nt|Гd}Й|}n└ddД|ddЕDГtttgkРr■|d|d|d |ddЕf\}Й}}ntd dД|ddЕDГtttddДГgkРrj|d|d|d |ddЕf\}ЙЙ}ЗЗfd dДt|ГDГ}ntdГВt|ГdkРrШt|dtГРrШ|d}|а|И|||бS)Nz6The ring needs to be specified for an empty 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