rational Scilab objects, rational in Scilab A rational r is a quotient of two polynomials r=num/den. The internal representation of a rational is a list. r=tlist(['r','num','den','dt'],num,den,[]) is the same as r=num/den. A rational matrix can be defined with the usual syntax e.g. [r11,r12;r21,r22] is a 2x2 matrix where rij are 1x1 rationals. A rational matrix can also be defined as above as a list rlist(num,den,[]) with num and den polynomial matrices. poly syslin simp