| Step | Hyp | Ref | Expression | 
						
							| 1 |  | isslmd.v |  | 
						
							| 2 |  | isslmd.a |  | 
						
							| 3 |  | isslmd.s |  | 
						
							| 4 |  | isslmd.0 |  | 
						
							| 5 |  | isslmd.f |  | 
						
							| 6 |  | isslmd.k |  | 
						
							| 7 |  | isslmd.p |  | 
						
							| 8 |  | isslmd.t |  | 
						
							| 9 |  | isslmd.u |  | 
						
							| 10 |  | isslmd.o |  | 
						
							| 11 |  | fvex |  | 
						
							| 12 |  | fvex |  | 
						
							| 13 |  | fvex |  | 
						
							| 14 |  | fvex |  | 
						
							| 15 |  | fvex |  | 
						
							| 16 |  | fvex |  | 
						
							| 17 |  | fvex |  | 
						
							| 18 |  | simp1 |  | 
						
							| 19 |  | simp2 |  | 
						
							| 20 | 19 | oveqd |  | 
						
							| 21 | 20 | oveq1d |  | 
						
							| 22 | 21 | eqeq1d |  | 
						
							| 23 | 22 | 3anbi3d |  | 
						
							| 24 |  | simp3 |  | 
						
							| 25 | 24 | oveqd |  | 
						
							| 26 | 25 | oveq1d |  | 
						
							| 27 | 26 | eqeq1d |  | 
						
							| 28 | 27 | 3anbi1d |  | 
						
							| 29 | 23 28 | anbi12d |  | 
						
							| 30 | 29 | 2ralbidv |  | 
						
							| 31 | 18 30 | raleqbidv |  | 
						
							| 32 | 18 31 | raleqbidv |  | 
						
							| 33 | 32 | anbi2d |  | 
						
							| 34 | 15 16 17 33 | sbc3ie |  | 
						
							| 35 |  | simpr |  | 
						
							| 36 | 35 | eleq1d |  | 
						
							| 37 | 35 | fveq2d |  | 
						
							| 38 |  | simpl |  | 
						
							| 39 | 38 | oveqd |  | 
						
							| 40 | 39 | eleq1d |  | 
						
							| 41 | 38 | oveqd |  | 
						
							| 42 | 38 | oveqd |  | 
						
							| 43 | 39 42 | oveq12d |  | 
						
							| 44 | 41 43 | eqeq12d |  | 
						
							| 45 | 35 | fveq2d |  | 
						
							| 46 | 45 | oveqd |  | 
						
							| 47 |  | eqidd |  | 
						
							| 48 | 38 46 47 | oveq123d |  | 
						
							| 49 | 38 | oveqd |  | 
						
							| 50 | 49 39 | oveq12d |  | 
						
							| 51 | 48 50 | eqeq12d |  | 
						
							| 52 | 40 44 51 | 3anbi123d |  | 
						
							| 53 | 35 | fveq2d |  | 
						
							| 54 | 53 | oveqd |  | 
						
							| 55 | 38 54 47 | oveq123d |  | 
						
							| 56 |  | eqidd |  | 
						
							| 57 | 38 56 39 | oveq123d |  | 
						
							| 58 | 55 57 | eqeq12d |  | 
						
							| 59 | 35 | fveq2d |  | 
						
							| 60 | 38 59 47 | oveq123d |  | 
						
							| 61 | 60 | eqeq1d |  | 
						
							| 62 | 35 | fveq2d |  | 
						
							| 63 | 38 62 47 | oveq123d |  | 
						
							| 64 | 63 | eqeq1d |  | 
						
							| 65 | 58 61 64 | 3anbi123d |  | 
						
							| 66 | 52 65 | anbi12d |  | 
						
							| 67 | 66 | 2ralbidv |  | 
						
							| 68 | 37 67 | raleqbidv |  | 
						
							| 69 | 37 68 | raleqbidv |  | 
						
							| 70 | 36 69 | anbi12d |  | 
						
							| 71 | 34 70 | bitrid |  | 
						
							| 72 | 13 14 71 | sbc2ie |  | 
						
							| 73 |  | simpl |  | 
						
							| 74 | 73 | eleq2d |  | 
						
							| 75 |  | simpr |  | 
						
							| 76 | 75 | oveqd |  | 
						
							| 77 | 76 | oveq2d |  | 
						
							| 78 | 75 | oveqd |  | 
						
							| 79 | 77 78 | eqeq12d |  | 
						
							| 80 | 75 | oveqd |  | 
						
							| 81 | 80 | eqeq2d |  | 
						
							| 82 | 74 79 81 | 3anbi123d |  | 
						
							| 83 | 82 | anbi1d |  | 
						
							| 84 | 73 83 | raleqbidv |  | 
						
							| 85 | 73 84 | raleqbidv |  | 
						
							| 86 | 85 | 2ralbidv |  | 
						
							| 87 | 86 | anbi2d |  | 
						
							| 88 | 72 87 | bitrid |  | 
						
							| 89 | 11 12 88 | sbc2ie |  | 
						
							| 90 |  | fveq2 |  | 
						
							| 91 | 90 5 | eqtr4di |  | 
						
							| 92 | 91 | eleq1d |  | 
						
							| 93 | 91 | fveq2d |  | 
						
							| 94 | 93 6 | eqtr4di |  | 
						
							| 95 |  | fveq2 |  | 
						
							| 96 | 95 1 | eqtr4di |  | 
						
							| 97 |  | fveq2 |  | 
						
							| 98 | 97 3 | eqtr4di |  | 
						
							| 99 | 98 | oveqd |  | 
						
							| 100 | 99 96 | eleq12d |  | 
						
							| 101 |  | eqidd |  | 
						
							| 102 |  | fveq2 |  | 
						
							| 103 | 102 2 | eqtr4di |  | 
						
							| 104 | 103 | oveqd |  | 
						
							| 105 | 98 101 104 | oveq123d |  | 
						
							| 106 | 98 | oveqd |  | 
						
							| 107 | 103 99 106 | oveq123d |  | 
						
							| 108 | 105 107 | eqeq12d |  | 
						
							| 109 | 91 | fveq2d |  | 
						
							| 110 | 109 7 | eqtr4di |  | 
						
							| 111 | 110 | oveqd |  | 
						
							| 112 |  | eqidd |  | 
						
							| 113 | 98 111 112 | oveq123d |  | 
						
							| 114 | 98 | oveqd |  | 
						
							| 115 | 103 114 99 | oveq123d |  | 
						
							| 116 | 113 115 | eqeq12d |  | 
						
							| 117 | 100 108 116 | 3anbi123d |  | 
						
							| 118 | 91 | fveq2d |  | 
						
							| 119 | 118 8 | eqtr4di |  | 
						
							| 120 | 119 | oveqd |  | 
						
							| 121 | 98 120 112 | oveq123d |  | 
						
							| 122 |  | eqidd |  | 
						
							| 123 | 98 122 99 | oveq123d |  | 
						
							| 124 | 121 123 | eqeq12d |  | 
						
							| 125 | 91 | fveq2d |  | 
						
							| 126 | 125 9 | eqtr4di |  | 
						
							| 127 | 98 126 112 | oveq123d |  | 
						
							| 128 | 127 | eqeq1d |  | 
						
							| 129 | 91 | fveq2d |  | 
						
							| 130 | 129 10 | eqtr4di |  | 
						
							| 131 | 98 130 112 | oveq123d |  | 
						
							| 132 |  | fveq2 |  | 
						
							| 133 | 132 4 | eqtr4di |  | 
						
							| 134 | 131 133 | eqeq12d |  | 
						
							| 135 | 124 128 134 | 3anbi123d |  | 
						
							| 136 | 117 135 | anbi12d |  | 
						
							| 137 | 96 136 | raleqbidv |  | 
						
							| 138 | 96 137 | raleqbidv |  | 
						
							| 139 | 94 138 | raleqbidv |  | 
						
							| 140 | 94 139 | raleqbidv |  | 
						
							| 141 | 92 140 | anbi12d |  | 
						
							| 142 | 89 141 | bitrid |  | 
						
							| 143 |  | df-slmd |  | 
						
							| 144 | 142 143 | elrab2 |  | 
						
							| 145 |  | 3anass |  | 
						
							| 146 | 144 145 | bitr4i |  |