INFORMATION ON THE IMAGE IN PSL(2,Z) OF THE GROUP OF PURE MODULAR GROUP LIFTABLES UNDER ITS PULLBACK ACTION ON THE UPPER HALF-PLANE Index in PSL(2,Z): 96 Minimal number of generators: 17 Number of equivalence classes of cusps: 16 Genus: 1 REPRESENTATIVES OF THE CUSP EQUIVALENCE CLASSSES -4/1 -10/3 -2/1 -4/3 0/1 1/1 4/3 3/2 2/1 8/3 3/1 4/1 16/3 6/1 8/1 1/0 CUSPS AT THE FUNDAMENTAL DOMAIN AND THEIR IMAGES UNDER THE PULLBACK MAP CUSP IMAGE PSEUDOIMAGES -4/1 1/0 -7/2 1/0 -10/3 -3/1 -3/1 -3/2 1/0 -2/1 -1/1 1/1 -5/3 -3/2 1/0 -8/5 -1/1 -3/2 -1/2 -4/3 0/1 -5/4 1/0 -16/13 0/1 -11/9 1/4 1/2 -6/5 1/1 -7/6 1/0 -8/7 1/0 -1/1 -1/2 1/0 0/1 0/1 1/1 1/2 1/0 4/3 1/1 7/5 3/2 1/0 10/7 -1/1 1/1 3/2 1/2 2/1 1/1 5/2 1/0 8/3 1/1 3/1 3/2 1/0 4/1 0/1 2/1 5/1 3/2 1/0 16/3 2/1 11/2 5/2 6/1 1/1 3/1 7/1 7/2 1/0 8/1 1/0 1/0 1/0 GENERATING SET ASSOCIATED TO THE FUNDAMENTAL DOMAIN GENERATOR EDGE PAIRING TYPE Matrix(7,32,-2,-9) (-4/1,1/0) -> (-4/1,-7/2) Parabolic Matrix(33,112,-28,-95) (-7/2,-10/3) -> (-6/5,-7/6) Hyperbolic Matrix(39,128,-32,-105) (-10/3,-3/1) -> (-11/9,-6/5) Hyperbolic Matrix(7,16,-4,-9) (-3/1,-2/1) -> (-2/1,-5/3) Parabolic Matrix(39,64,14,23) (-5/3,-8/5) -> (8/3,3/1) Hyperbolic Matrix(41,64,16,25) (-8/5,-3/2) -> (5/2,8/3) Hyperbolic Matrix(23,32,-18,-25) (-3/2,-4/3) -> (-4/3,-5/4) Parabolic Matrix(207,256,38,47) (-5/4,-16/13) -> (16/3,11/2) Hyperbolic Matrix(209,256,40,49) (-16/13,-11/9) -> (5/1,16/3) Hyperbolic Matrix(55,64,6,7) (-7/6,-8/7) -> (8/1,1/0) Hyperbolic Matrix(57,64,8,9) (-8/7,-1/1) -> (7/1,8/1) Hyperbolic Matrix(1,0,2,1) (-1/1,0/1) -> (0/1,1/1) Parabolic Matrix(25,-32,18,-23) (1/1,4/3) -> (4/3,7/5) Parabolic Matrix(79,-112,12,-17) (7/5,10/7) -> (6/1,7/1) Hyperbolic Matrix(89,-128,16,-23) (10/7,3/2) -> (11/2,6/1) Hyperbolic Matrix(9,-16,4,-7) (3/2,2/1) -> (2/1,5/2) Parabolic Matrix(9,-32,2,-7) (3/1,4/1) -> (4/1,5/1) Parabolic IMAGES OF THE GENERATORS UNDER THE VIRTUAL ENDOMORPHISM Matrix(7,32,-2,-9) -> Matrix(1,-2,0,1) Matrix(33,112,-28,-95) -> Matrix(1,4,0,1) Matrix(39,128,-32,-105) -> Matrix(1,2,2,5) Matrix(7,16,-4,-9) -> Matrix(1,0,0,1) Matrix(39,64,14,23) -> Matrix(3,4,2,3) Matrix(41,64,16,25) -> Matrix(1,0,2,1) Matrix(23,32,-18,-25) -> Matrix(1,0,2,1) Matrix(207,256,38,47) -> Matrix(5,2,2,1) Matrix(209,256,40,49) -> Matrix(7,-2,4,-1) Matrix(55,64,6,7) -> Matrix(1,0,0,1) Matrix(57,64,8,9) -> Matrix(1,4,0,1) Matrix(1,0,2,1) -> Matrix(1,0,2,1) Matrix(25,-32,18,-23) -> Matrix(3,-2,2,-1) Matrix(79,-112,12,-17) -> Matrix(1,2,0,1) Matrix(89,-128,16,-23) -> Matrix(1,2,0,1) Matrix(9,-16,4,-7) -> Matrix(3,-2,2,-1) Matrix(9,-32,2,-7) -> Matrix(1,0,0,1) INFORMATION ON THE IMAGE OF THIS GROUP UNDER THE VIRTUAL ENDOMORPHISM Index in PSL(2,Z): 6 Minimal number of generators: 2 Number of equivalence classes of cusps: 3 Genus: 0 Degree of H/liftables -> H/(image of liftables): 5 Degree of the the map X: 5 Degree of the the map Y: 16 Permutation triple for Y: ((2,6)(3,4)(11,12)(13,14); (1,4,10,13,15,11,5,2)(3,8,14,16,12,7,6,9); (1,2,7,12,15,13,8,3)(4,9,6,5,11,16,14,10)) ----------------------------------------------------------------------- Elements among 0, lambda1, lambda2 and lambda1+lambda2 which lift elements of DeckMod(f) via pi_1: 0 DeckMod(f) is trivial. Elements among 0, lambda1, lambda2 and lambda1+lambda2 which lift modular group liftables via pi_1: 0 The subgroup of modular group liftables which arise from translations is trivial. ----------------------------------------------------------------------- The image of the modular group liftables in PSL(2,Z) equals the image of the pure modular group liftables. ----------------------------------------------------------------------- The image of the extended modular group liftables in PGL(2,Z) equals the image of the modular liftables. ----------------------------------------------------------------------- The pullback map was not drawn because it is too complicated.