| Step | Hyp | Ref | Expression | 
						
							| 1 |  | riinrab |  | 
						
							| 2 |  | inss2 |  | 
						
							| 3 | 2 | sseli |  | 
						
							| 4 | 3 | biantrud |  | 
						
							| 5 |  | vex |  | 
						
							| 6 | 5 | snss |  | 
						
							| 7 | 6 | bicomi |  | 
						
							| 8 |  | elin |  | 
						
							| 9 | 4 7 8 | 3bitr4g |  | 
						
							| 10 | 9 | imbi1d |  | 
						
							| 11 | 10 | ralbiia |  | 
						
							| 12 |  | elpwi |  | 
						
							| 13 | 12 | ssrind |  | 
						
							| 14 | 13 | adantl |  | 
						
							| 15 |  | ralss |  | 
						
							| 16 | 14 15 | syl |  | 
						
							| 17 | 11 16 | bitr4id |  | 
						
							| 18 | 17 | rabbidva |  | 
						
							| 19 | 1 18 | eqtrid |  | 
						
							| 20 |  | mreacs |  | 
						
							| 21 | 20 | adantr |  | 
						
							| 22 |  | ssralv |  | 
						
							| 23 | 2 22 | ax-mp |  | 
						
							| 24 |  | simpll |  | 
						
							| 25 |  | simpr |  | 
						
							| 26 |  | inss1 |  | 
						
							| 27 | 26 | sseli |  | 
						
							| 28 | 27 | ad2antlr |  | 
						
							| 29 | 28 | snssd |  | 
						
							| 30 |  | snfi |  | 
						
							| 31 | 30 | a1i |  | 
						
							| 32 |  | acsfn |  | 
						
							| 33 | 24 25 29 31 32 | syl22anc |  | 
						
							| 34 | 33 | ex |  | 
						
							| 35 | 34 | ralimdva |  | 
						
							| 36 | 23 35 | syl5 |  | 
						
							| 37 | 36 | imp |  | 
						
							| 38 |  | mreriincl |  | 
						
							| 39 | 21 37 38 | syl2anc |  | 
						
							| 40 | 19 39 | eqeltrrd |  |