| Step | Hyp | Ref | Expression | 
						
							| 1 |  | lsspropd.b1 |  | 
						
							| 2 |  | lsspropd.b2 |  | 
						
							| 3 |  | lsspropd.w |  | 
						
							| 4 |  | lsspropd.p |  | 
						
							| 5 |  | lsspropd.s1 |  | 
						
							| 6 |  | lsspropd.s2 |  | 
						
							| 7 |  | lsspropd.p1 |  | 
						
							| 8 |  | lsspropd.p2 |  | 
						
							| 9 |  | simpll |  | 
						
							| 10 |  | simprl |  | 
						
							| 11 |  | simplr |  | 
						
							| 12 |  | simprrl |  | 
						
							| 13 | 11 12 | sseldd |  | 
						
							| 14 | 5 | ralrimivva |  | 
						
							| 15 | 14 | ad2antrr |  | 
						
							| 16 |  | ovrspc2v |  | 
						
							| 17 | 10 13 15 16 | syl21anc |  | 
						
							| 18 | 3 | ad2antrr |  | 
						
							| 19 |  | simprrr |  | 
						
							| 20 | 11 19 | sseldd |  | 
						
							| 21 | 18 20 | sseldd |  | 
						
							| 22 | 4 | oveqrspc2v |  | 
						
							| 23 | 9 17 21 22 | syl12anc |  | 
						
							| 24 | 6 | oveqrspc2v |  | 
						
							| 25 | 9 10 13 24 | syl12anc |  | 
						
							| 26 | 25 | oveq1d |  | 
						
							| 27 | 23 26 | eqtrd |  | 
						
							| 28 | 27 | eleq1d |  | 
						
							| 29 | 28 | anassrs |  | 
						
							| 30 | 29 | 2ralbidva |  | 
						
							| 31 | 30 | ralbidva |  | 
						
							| 32 | 31 | anbi2d |  | 
						
							| 33 | 32 | pm5.32da |  | 
						
							| 34 |  | 3anass |  | 
						
							| 35 |  | 3anass |  | 
						
							| 36 | 33 34 35 | 3bitr4g |  | 
						
							| 37 | 1 | sseq2d |  | 
						
							| 38 | 7 | raleqdv |  | 
						
							| 39 | 37 38 | 3anbi13d |  | 
						
							| 40 | 2 | sseq2d |  | 
						
							| 41 | 8 | raleqdv |  | 
						
							| 42 | 40 41 | 3anbi13d |  | 
						
							| 43 | 36 39 42 | 3bitr3d |  | 
						
							| 44 |  | eqid |  | 
						
							| 45 |  | eqid |  | 
						
							| 46 |  | eqid |  | 
						
							| 47 |  | eqid |  | 
						
							| 48 |  | eqid |  | 
						
							| 49 |  | eqid |  | 
						
							| 50 | 44 45 46 47 48 49 | islss |  | 
						
							| 51 |  | eqid |  | 
						
							| 52 |  | eqid |  | 
						
							| 53 |  | eqid |  | 
						
							| 54 |  | eqid |  | 
						
							| 55 |  | eqid |  | 
						
							| 56 |  | eqid |  | 
						
							| 57 | 51 52 53 54 55 56 | islss |  | 
						
							| 58 | 43 50 57 | 3bitr4g |  | 
						
							| 59 | 58 | eqrdv |  |