| Step | Hyp | Ref | Expression | 
						
							| 1 |  | hgmapval.h |  | 
						
							| 2 |  | hgmapfval.u |  | 
						
							| 3 |  | hgmapfval.v |  | 
						
							| 4 |  | hgmapfval.t |  | 
						
							| 5 |  | hgmapfval.r |  | 
						
							| 6 |  | hgmapfval.b |  | 
						
							| 7 |  | hgmapfval.c |  | 
						
							| 8 |  | hgmapfval.s |  | 
						
							| 9 |  | hgmapfval.m |  | 
						
							| 10 |  | hgmapfval.i |  | 
						
							| 11 |  | hgmapfval.k |  | 
						
							| 12 | 1 | hgmapffval |  | 
						
							| 13 | 12 | fveq1d |  | 
						
							| 14 | 10 13 | eqtrid |  | 
						
							| 15 |  | fveq2 |  | 
						
							| 16 | 15 2 | eqtr4di |  | 
						
							| 17 |  | fveq2 |  | 
						
							| 18 | 17 9 | eqtr4di |  | 
						
							| 19 |  | 2fveq3 |  | 
						
							| 20 | 19 | oveqd |  | 
						
							| 21 | 20 | eqeq2d |  | 
						
							| 22 | 21 | ralbidv |  | 
						
							| 23 | 22 | riotabidv |  | 
						
							| 24 | 23 | mpteq2dv |  | 
						
							| 25 | 24 | eleq2d |  | 
						
							| 26 | 18 25 | sbceqbid |  | 
						
							| 27 | 26 | sbcbidv |  | 
						
							| 28 | 16 27 | sbceqbid |  | 
						
							| 29 | 2 | fvexi |  | 
						
							| 30 |  | fvex |  | 
						
							| 31 | 9 | fvexi |  | 
						
							| 32 |  | simp2 |  | 
						
							| 33 |  | simp1 |  | 
						
							| 34 | 33 | fveq2d |  | 
						
							| 35 | 34 5 | eqtr4di |  | 
						
							| 36 | 35 | fveq2d |  | 
						
							| 37 | 32 36 | eqtrd |  | 
						
							| 38 | 37 6 | eqtr4di |  | 
						
							| 39 |  | simp2 |  | 
						
							| 40 |  | simp1 |  | 
						
							| 41 | 40 | fveq2d |  | 
						
							| 42 | 41 3 | eqtr4di |  | 
						
							| 43 |  | simp3 |  | 
						
							| 44 | 40 | fveq2d |  | 
						
							| 45 | 44 4 | eqtr4di |  | 
						
							| 46 | 45 | oveqd |  | 
						
							| 47 | 43 46 | fveq12d |  | 
						
							| 48 |  | eqidd |  | 
						
							| 49 | 48 7 | eqtr4di |  | 
						
							| 50 | 49 | fveq2d |  | 
						
							| 51 | 50 8 | eqtr4di |  | 
						
							| 52 |  | eqidd |  | 
						
							| 53 | 43 | fveq1d |  | 
						
							| 54 | 51 52 53 | oveq123d |  | 
						
							| 55 | 47 54 | eqeq12d |  | 
						
							| 56 | 42 55 | raleqbidv |  | 
						
							| 57 | 39 56 | riotaeqbidv |  | 
						
							| 58 | 39 57 | mpteq12dv |  | 
						
							| 59 | 58 | eleq2d |  | 
						
							| 60 | 38 59 | syld3an2 |  | 
						
							| 61 | 29 30 31 60 | sbc3ie |  | 
						
							| 62 | 28 61 | bitrdi |  | 
						
							| 63 | 62 | eqabcdv |  | 
						
							| 64 |  | eqid |  | 
						
							| 65 | 63 64 6 | mptfvmpt |  | 
						
							| 66 | 14 65 | sylan9eq |  | 
						
							| 67 | 11 66 | syl |  |