| Step | Hyp | Ref | Expression | 
						
							| 1 |  | cvrcmp.b |  | 
						
							| 2 |  | cvrcmp.l |  | 
						
							| 3 |  | cvrcmp.c |  | 
						
							| 4 |  | opposet |  | 
						
							| 5 | 4 | 3ad2ant1 |  | 
						
							| 6 |  | simp1 |  | 
						
							| 7 |  | simp22 |  | 
						
							| 8 |  | eqid |  | 
						
							| 9 | 1 8 | opoccl |  | 
						
							| 10 | 6 7 9 | syl2anc |  | 
						
							| 11 |  | simp21 |  | 
						
							| 12 | 1 8 | opoccl |  | 
						
							| 13 | 6 11 12 | syl2anc |  | 
						
							| 14 |  | simp23 |  | 
						
							| 15 | 1 8 | opoccl |  | 
						
							| 16 | 6 14 15 | syl2anc |  | 
						
							| 17 | 1 8 3 | cvrcon3b |  | 
						
							| 18 | 17 | 3adant3r2 |  | 
						
							| 19 | 1 8 3 | cvrcon3b |  | 
						
							| 20 | 19 | 3adant3r1 |  | 
						
							| 21 | 18 20 | anbi12d |  | 
						
							| 22 | 21 | biimp3a |  | 
						
							| 23 | 22 | ancomd |  | 
						
							| 24 | 1 2 3 | cvrcmp |  | 
						
							| 25 | 5 10 13 16 23 24 | syl131anc |  | 
						
							| 26 | 1 2 8 | oplecon3b |  | 
						
							| 27 | 6 11 7 26 | syl3anc |  | 
						
							| 28 | 1 8 | opcon3b |  | 
						
							| 29 | 6 11 7 28 | syl3anc |  | 
						
							| 30 | 25 27 29 | 3bitr4d |  |