| Step | Hyp | Ref | Expression | 
						
							| 1 |  | ismon.b |  | 
						
							| 2 |  | ismon.h |  | 
						
							| 3 |  | ismon.o |  | 
						
							| 4 |  | ismon.s |  | 
						
							| 5 |  | ismon.c |  | 
						
							| 6 |  | ismon.x |  | 
						
							| 7 |  | ismon.y |  | 
						
							| 8 | 1 2 3 4 5 6 7 | ismon |  | 
						
							| 9 | 5 | ad2antrr |  | 
						
							| 10 |  | simprl |  | 
						
							| 11 | 6 | ad2antrr |  | 
						
							| 12 | 7 | ad2antrr |  | 
						
							| 13 |  | simprr |  | 
						
							| 14 |  | simplr |  | 
						
							| 15 | 1 2 3 9 10 11 12 13 14 | catcocl |  | 
						
							| 16 | 15 | anassrs |  | 
						
							| 17 | 16 | ralrimiva |  | 
						
							| 18 |  | eqid |  | 
						
							| 19 | 18 | fmpt |  | 
						
							| 20 |  | df-f1 |  | 
						
							| 21 | 20 | baib |  | 
						
							| 22 | 19 21 | sylbi |  | 
						
							| 23 |  | oveq2 |  | 
						
							| 24 | 18 23 | f1mpt |  | 
						
							| 25 | 24 | baib |  | 
						
							| 26 | 22 25 | bitr3d |  | 
						
							| 27 | 17 26 | syl |  | 
						
							| 28 | 27 | ralbidva |  | 
						
							| 29 | 28 | pm5.32da |  | 
						
							| 30 | 8 29 | bitrd |  |