| Step | Hyp | Ref | Expression | 
						
							| 1 |  | htth.1 |  | 
						
							| 2 |  | htth.2 |  | 
						
							| 3 |  | htth.3 |  | 
						
							| 4 |  | htth.4 |  | 
						
							| 5 |  | oveq12 |  | 
						
							| 6 | 5 | anidms |  | 
						
							| 7 | 3 6 | eqtrid |  | 
						
							| 8 | 7 | eleq2d |  | 
						
							| 9 |  | fveq2 |  | 
						
							| 10 | 1 9 | eqtrid |  | 
						
							| 11 |  | fveq2 |  | 
						
							| 12 | 2 11 | eqtrid |  | 
						
							| 13 | 12 | oveqd |  | 
						
							| 14 | 12 | oveqd |  | 
						
							| 15 | 13 14 | eqeq12d |  | 
						
							| 16 | 10 15 | raleqbidv |  | 
						
							| 17 | 10 16 | raleqbidv |  | 
						
							| 18 | 8 17 | anbi12d |  | 
						
							| 19 |  | oveq12 |  | 
						
							| 20 | 19 | anidms |  | 
						
							| 21 | 4 20 | eqtrid |  | 
						
							| 22 | 21 | eleq2d |  | 
						
							| 23 | 18 22 | imbi12d |  | 
						
							| 24 |  | eqid |  | 
						
							| 25 |  | eqid |  | 
						
							| 26 |  | eqid |  | 
						
							| 27 |  | eqid |  | 
						
							| 28 |  | eqid |  | 
						
							| 29 |  | eqid |  | 
						
							| 30 | 29 | cnchl |  | 
						
							| 31 | 30 | elimel |  | 
						
							| 32 |  | simpl |  | 
						
							| 33 |  | simpr |  | 
						
							| 34 |  | oveq1 |  | 
						
							| 35 |  | fveq2 |  | 
						
							| 36 | 35 | oveq1d |  | 
						
							| 37 | 34 36 | eqeq12d |  | 
						
							| 38 |  | fveq2 |  | 
						
							| 39 | 38 | oveq2d |  | 
						
							| 40 |  | oveq2 |  | 
						
							| 41 | 39 40 | eqeq12d |  | 
						
							| 42 | 37 41 | cbvral2vw |  | 
						
							| 43 | 33 42 | sylib |  | 
						
							| 44 |  | oveq1 |  | 
						
							| 45 | 44 | cbvmptv |  | 
						
							| 46 |  | fveq2 |  | 
						
							| 47 | 46 | oveq2d |  | 
						
							| 48 | 47 | mpteq2dv |  | 
						
							| 49 | 45 48 | eqtrid |  | 
						
							| 50 | 49 | cbvmptv |  | 
						
							| 51 |  | fveq2 |  | 
						
							| 52 | 51 | breq1d |  | 
						
							| 53 | 52 | cbvrabv |  | 
						
							| 54 | 53 | imaeq2i |  | 
						
							| 55 | 24 25 26 27 28 31 29 32 43 50 54 | htthlem |  | 
						
							| 56 | 23 55 | dedth |  | 
						
							| 57 | 56 | 3impib |  |