| Step | Hyp | Ref | Expression | 
						
							| 1 |  | axacndlem4 |  | 
						
							| 2 |  | nfnae |  | 
						
							| 3 |  | nfnae |  | 
						
							| 4 |  | nfnae |  | 
						
							| 5 | 2 3 4 | nf3an |  | 
						
							| 6 |  | nfnae |  | 
						
							| 7 |  | nfnae |  | 
						
							| 8 |  | nfnae |  | 
						
							| 9 | 6 7 8 | nf3an |  | 
						
							| 10 |  | nfnae |  | 
						
							| 11 |  | nfnae |  | 
						
							| 12 |  | nfnae |  | 
						
							| 13 | 10 11 12 | nf3an |  | 
						
							| 14 |  | nfcvd |  | 
						
							| 15 |  | nfcvf |  | 
						
							| 16 | 15 | 3ad2ant1 |  | 
						
							| 17 | 14 16 | nfeld |  | 
						
							| 18 |  | nfcvf |  | 
						
							| 19 | 18 | 3ad2ant3 |  | 
						
							| 20 | 16 19 | nfeld |  | 
						
							| 21 | 17 20 | nfand |  | 
						
							| 22 | 5 21 | nfald |  | 
						
							| 23 |  | nfnae |  | 
						
							| 24 |  | nfnae |  | 
						
							| 25 |  | nfnae |  | 
						
							| 26 | 23 24 25 | nf3an |  | 
						
							| 27 |  | nfv |  | 
						
							| 28 | 14 19 | nfeld |  | 
						
							| 29 |  | nfcvf |  | 
						
							| 30 | 29 | 3ad2ant2 |  | 
						
							| 31 | 19 30 | nfeld |  | 
						
							| 32 | 28 31 | nfand |  | 
						
							| 33 | 21 32 | nfand |  | 
						
							| 34 | 26 33 | nfexd |  | 
						
							| 35 | 14 19 | nfeqd |  | 
						
							| 36 | 34 35 | nfbid |  | 
						
							| 37 | 27 36 | nfald |  | 
						
							| 38 | 26 37 | nfexd |  | 
						
							| 39 | 22 38 | nfimd |  | 
						
							| 40 | 13 39 | nfald |  | 
						
							| 41 |  | nfcvd |  | 
						
							| 42 |  | nfcvf2 |  | 
						
							| 43 | 42 | 3ad2ant1 |  | 
						
							| 44 | 41 43 | nfeqd |  | 
						
							| 45 | 13 44 | nfan1 |  | 
						
							| 46 |  | nfcvd |  | 
						
							| 47 |  | nfcvf2 |  | 
						
							| 48 | 47 | 3ad2ant2 |  | 
						
							| 49 | 46 48 | nfeqd |  | 
						
							| 50 | 5 49 | nfan1 |  | 
						
							| 51 |  | simpr |  | 
						
							| 52 | 51 | eleq1d |  | 
						
							| 53 | 52 | anbi1d |  | 
						
							| 54 | 50 53 | albid |  | 
						
							| 55 |  | nfcvd |  | 
						
							| 56 |  | nfcvf2 |  | 
						
							| 57 | 56 | 3ad2ant3 |  | 
						
							| 58 | 55 57 | nfeqd |  | 
						
							| 59 | 26 58 | nfan1 |  | 
						
							| 60 | 51 | eleq1d |  | 
						
							| 61 | 60 | anbi1d |  | 
						
							| 62 | 53 61 | anbi12d |  | 
						
							| 63 | 59 62 | exbid |  | 
						
							| 64 | 51 | eqeq1d |  | 
						
							| 65 | 63 64 | bibi12d |  | 
						
							| 66 | 65 | ex |  | 
						
							| 67 | 9 36 66 | cbvald |  | 
						
							| 68 | 26 67 | exbid |  | 
						
							| 69 | 68 | adantr |  | 
						
							| 70 | 54 69 | imbi12d |  | 
						
							| 71 | 45 70 | albid |  | 
						
							| 72 | 71 | ex |  | 
						
							| 73 | 9 40 72 | cbvald |  | 
						
							| 74 | 5 73 | exbid |  | 
						
							| 75 | 1 74 | mpbii |  | 
						
							| 76 | 75 | 3exp |  | 
						
							| 77 |  | axacndlem3 |  | 
						
							| 78 |  | axacndlem1 |  | 
						
							| 79 | 78 | aecoms |  | 
						
							| 80 |  | nfae |  | 
						
							| 81 |  | en2lp |  | 
						
							| 82 |  | elequ2 |  | 
						
							| 83 | 82 | anbi2d |  | 
						
							| 84 | 81 83 | mtbii |  | 
						
							| 85 | 84 | sps |  | 
						
							| 86 | 85 | pm2.21d |  | 
						
							| 87 | 86 | spsd |  | 
						
							| 88 | 80 87 | alrimi |  | 
						
							| 89 | 88 | axc4i |  | 
						
							| 90 | 89 | 19.8ad |  | 
						
							| 91 | 76 77 79 90 | pm2.61iii |  |