| Step | Hyp | Ref | Expression | 
						
							| 1 |  | 3dim0.j |  | 
						
							| 2 |  | 3dim0.l |  | 
						
							| 3 |  | 3dim0.a |  | 
						
							| 4 |  | simp33 |  | 
						
							| 5 |  | simp11 |  | 
						
							| 6 | 5 | hllatd |  | 
						
							| 7 |  | simp13 |  | 
						
							| 8 |  | eqid |  | 
						
							| 9 | 8 3 | atbase |  | 
						
							| 10 | 7 9 | syl |  | 
						
							| 11 |  | simp2l |  | 
						
							| 12 | 8 3 | atbase |  | 
						
							| 13 | 11 12 | syl |  | 
						
							| 14 |  | simp12 |  | 
						
							| 15 | 8 3 | atbase |  | 
						
							| 16 | 14 15 | syl |  | 
						
							| 17 | 8 1 | latjrot |  | 
						
							| 18 | 6 10 13 16 17 | syl13anc |  | 
						
							| 19 | 18 | breq2d |  | 
						
							| 20 |  | simp2r |  | 
						
							| 21 | 8 1 | latjcl |  | 
						
							| 22 | 6 10 13 21 | syl3anc |  | 
						
							| 23 |  | simp31 |  | 
						
							| 24 | 8 2 1 3 | hlexch1 |  | 
						
							| 25 | 5 20 14 22 23 24 | syl131anc |  | 
						
							| 26 | 19 25 | sylbird |  | 
						
							| 27 | 4 26 | mtod |  |