# How to use *Integral-functions* in a sentence

P. Gordan first proved that for any system of forms there exists a finite number of covariants, in terms of which all others are expressible as rational and

**integral functions**.The highest common factor (or common factor of highest degree) of two rational

**integral functions**of x is therefore found in the same way as the G.C.M.In particular if D =o, that is, if the given curve be unicursal, the transformed curve is a line, 4 is a mere linear function of 0, and the theorem is that the co-ordinates x, y, z of a point of the unicursal curve can be expressed as proportional to rational and

**integral functions**of 0; it is easy to see that for a given curve of the order m, these functions of 0 must be of the same order m.And so if D =2, then the transformed curve is a nodal quartic; 4 can be expressed as the square root of a sextic function of 0 and the theorem is, that the co-ordinates x, y, z of a point of the tricursal curve can be expressed as proportional to rational and

**integral functions**of 0, and of the square root of a sextic function of 0.It is a form of the theorem for the case D = r, that the coordinates x, y, z of a point of the bicursal curve, or in particular the co-ordinates of a point of the cubic, can be expressed as proportional to rational and

**integral functions**of the elliptic functions snu, cnu, dnu; in fact, taking the radical to be r -0 2 .r - k 2 0 2, and writing 8 =snu, the radical becomes = cnu, dnu; and we have expressions of the form in question.Advertisement