| Step | Hyp | Ref | Expression | 
						
							| 1 |  | trlset.b |  | 
						
							| 2 |  | trlset.l |  | 
						
							| 3 |  | trlset.j |  | 
						
							| 4 |  | trlset.m |  | 
						
							| 5 |  | trlset.a |  | 
						
							| 6 |  | trlset.h |  | 
						
							| 7 |  | trlset.t |  | 
						
							| 8 |  | trlset.r |  | 
						
							| 9 | 1 2 3 4 5 6 | trlfset |  | 
						
							| 10 | 9 | fveq1d |  | 
						
							| 11 | 8 10 | eqtrid |  | 
						
							| 12 |  | fveq2 |  | 
						
							| 13 |  | breq2 |  | 
						
							| 14 | 13 | notbid |  | 
						
							| 15 |  | oveq2 |  | 
						
							| 16 | 15 | eqeq2d |  | 
						
							| 17 | 14 16 | imbi12d |  | 
						
							| 18 | 17 | ralbidv |  | 
						
							| 19 | 18 | riotabidv |  | 
						
							| 20 | 12 19 | mpteq12dv |  | 
						
							| 21 |  | eqid |  | 
						
							| 22 |  | fvex |  | 
						
							| 23 | 22 | mptex |  | 
						
							| 24 | 20 21 23 | fvmpt |  | 
						
							| 25 | 7 | mpteq1i |  | 
						
							| 26 | 24 25 | eqtr4di |  | 
						
							| 27 | 11 26 | sylan9eq |  |