| Step | Hyp | Ref | Expression | 
						
							| 1 |  | dihord6apre.b |  | 
						
							| 2 |  | dihord6apre.l |  | 
						
							| 3 |  | dihord6apre.a |  | 
						
							| 4 |  | dihord6apre.h |  | 
						
							| 5 |  | dihord6apre.p |  | 
						
							| 6 |  | dihord6apre.o |  | 
						
							| 7 |  | dihord6apre.t |  | 
						
							| 8 |  | dihord6apre.e |  | 
						
							| 9 |  | dihord6apre.i |  | 
						
							| 10 |  | dihord6apre.u |  | 
						
							| 11 |  | dihord6apre.s |  | 
						
							| 12 |  | dihord6apre.g |  | 
						
							| 13 | 1 4 7 8 6 | tendo1ne0 |  | 
						
							| 14 | 13 | 3ad2ant1 |  | 
						
							| 15 | 14 | neneqd |  | 
						
							| 16 |  | eqid |  | 
						
							| 17 |  | eqid |  | 
						
							| 18 | 1 2 16 17 3 4 | lhpmcvr2 |  | 
						
							| 19 | 18 | 3adant3 |  | 
						
							| 20 |  | simpl1 |  | 
						
							| 21 |  | simpl2 |  | 
						
							| 22 |  | simpr |  | 
						
							| 23 |  | eqid |  | 
						
							| 24 |  | eqid |  | 
						
							| 25 | 1 2 16 17 3 4 9 23 24 10 11 | dihvalcq |  | 
						
							| 26 | 20 21 22 25 | syl3anc |  | 
						
							| 27 |  | simpl3 |  | 
						
							| 28 | 1 2 4 9 23 | dihvalb |  | 
						
							| 29 | 20 27 28 | syl2anc |  | 
						
							| 30 | 26 29 | sseq12d |  | 
						
							| 31 | 4 10 20 | dvhlmod |  | 
						
							| 32 |  | eqid |  | 
						
							| 33 | 32 | lsssssubg |  | 
						
							| 34 | 31 33 | syl |  | 
						
							| 35 |  | simprl |  | 
						
							| 36 | 2 3 4 10 24 32 | diclss |  | 
						
							| 37 | 20 35 36 | syl2anc |  | 
						
							| 38 | 34 37 | sseldd |  | 
						
							| 39 |  | simpl1l |  | 
						
							| 40 | 39 | hllatd |  | 
						
							| 41 |  | simpl2l |  | 
						
							| 42 |  | simpl1r |  | 
						
							| 43 | 1 4 | lhpbase |  | 
						
							| 44 | 42 43 | syl |  | 
						
							| 45 | 1 17 | latmcl |  | 
						
							| 46 | 40 41 44 45 | syl3anc |  | 
						
							| 47 | 1 2 17 | latmle2 |  | 
						
							| 48 | 40 41 44 47 | syl3anc |  | 
						
							| 49 | 1 2 4 10 23 32 | diblss |  | 
						
							| 50 | 20 46 48 49 | syl12anc |  | 
						
							| 51 | 34 50 | sseldd |  | 
						
							| 52 | 11 | lsmub1 |  | 
						
							| 53 | 38 51 52 | syl2anc |  | 
						
							| 54 |  | sstr |  | 
						
							| 55 |  | eqidd |  | 
						
							| 56 | 4 7 8 | tendoidcl |  | 
						
							| 57 | 20 56 | syl |  | 
						
							| 58 |  | fvex |  | 
						
							| 59 | 7 | fvexi |  | 
						
							| 60 |  | resiexg |  | 
						
							| 61 | 59 60 | ax-mp |  | 
						
							| 62 | 2 3 4 5 7 8 24 12 58 61 | dicopelval2 |  | 
						
							| 63 | 20 35 62 | syl2anc |  | 
						
							| 64 | 55 57 63 | mpbir2and |  | 
						
							| 65 |  | ssel2 |  | 
						
							| 66 |  | eqid |  | 
						
							| 67 | 1 2 4 7 6 66 23 | dibopelval2 |  | 
						
							| 68 | 20 27 67 | syl2anc |  | 
						
							| 69 |  | simpr |  | 
						
							| 70 | 68 69 | biimtrdi |  | 
						
							| 71 | 65 70 | syl5 |  | 
						
							| 72 | 64 71 | mpan2d |  | 
						
							| 73 | 54 72 | syl5 |  | 
						
							| 74 | 53 73 | mpand |  | 
						
							| 75 | 30 74 | sylbid |  | 
						
							| 76 | 75 | exp44 |  | 
						
							| 77 | 76 | imp4a |  | 
						
							| 78 | 77 | rexlimdv |  | 
						
							| 79 | 19 78 | mpd |  | 
						
							| 80 | 15 79 | mtod |  | 
						
							| 81 | 80 | pm2.21d |  | 
						
							| 82 | 81 | imp |  |