| Step | Hyp | Ref | Expression | 
						
							| 1 |  | noinfdm.1 |  | 
						
							| 2 |  | iffalse |  | 
						
							| 3 | 1 2 | eqtrid |  | 
						
							| 4 | 3 | dmeqd |  | 
						
							| 5 |  | iotaex |  | 
						
							| 6 |  | eqid |  | 
						
							| 7 | 5 6 | dmmpti |  | 
						
							| 8 |  | eleq1w |  | 
						
							| 9 |  | suceq |  | 
						
							| 10 | 9 | reseq2d |  | 
						
							| 11 | 9 | reseq2d |  | 
						
							| 12 | 10 11 | eqeq12d |  | 
						
							| 13 | 12 | imbi2d |  | 
						
							| 14 | 13 | ralbidv |  | 
						
							| 15 | 8 14 | anbi12d |  | 
						
							| 16 | 15 | rexbidv |  | 
						
							| 17 |  | dmeq |  | 
						
							| 18 | 17 | eleq2d |  | 
						
							| 19 |  | breq1 |  | 
						
							| 20 | 19 | notbid |  | 
						
							| 21 |  | reseq1 |  | 
						
							| 22 | 21 | eqeq1d |  | 
						
							| 23 | 20 22 | imbi12d |  | 
						
							| 24 | 23 | ralbidv |  | 
						
							| 25 |  | breq2 |  | 
						
							| 26 | 25 | notbid |  | 
						
							| 27 |  | reseq1 |  | 
						
							| 28 | 27 | eqeq2d |  | 
						
							| 29 | 26 28 | imbi12d |  | 
						
							| 30 | 29 | cbvralvw |  | 
						
							| 31 | 24 30 | bitrdi |  | 
						
							| 32 | 18 31 | anbi12d |  | 
						
							| 33 | 32 | cbvrexvw |  | 
						
							| 34 | 16 33 | bitrdi |  | 
						
							| 35 | 34 | cbvabv |  | 
						
							| 36 | 7 35 | eqtri |  | 
						
							| 37 | 4 36 | eqtrdi |  |