Spinor-type fields with linear, affine and general coordinate transformations

The existence of bivalued linear (infinite spinorial representatios of the Group of General Coordinate Transformations is demonstrated. The topology of the G.G.C.T. and its subgroups GA(nR), GL(n,R) SL(nR) for n=2, 3, 4 and the existence of a double covering are discussed. The construction of the half-integer spin representations in terms of Harish-Chandra modules is demonstrated. D.W. Joseph's explicit matrices are given for J0 = 1.2, c=0 in SL(3R), which will act as little group in GA(4R)