| Step | Hyp | Ref | Expression | 
						
							| 1 |  | cdlemg12.l |  | 
						
							| 2 |  | cdlemg12.j |  | 
						
							| 3 |  | cdlemg12.m |  | 
						
							| 4 |  | cdlemg12.a |  | 
						
							| 5 |  | cdlemg12.h |  | 
						
							| 6 |  | cdlemg12.t |  | 
						
							| 7 |  | cdlemg12b.r |  | 
						
							| 8 |  | simp11 |  | 
						
							| 9 |  | simp2l |  | 
						
							| 10 |  | simp2r |  | 
						
							| 11 |  | simp12 |  | 
						
							| 12 | 1 4 5 6 | ltrnel |  | 
						
							| 13 | 8 10 11 12 | syl3anc |  | 
						
							| 14 | 1 2 3 4 5 6 7 | trlval2 |  | 
						
							| 15 | 8 9 13 14 | syl3anc |  | 
						
							| 16 |  | simp13 |  | 
						
							| 17 | 1 4 5 6 | ltrnel |  | 
						
							| 18 | 8 10 16 17 | syl3anc |  | 
						
							| 19 | 1 2 3 4 5 6 7 | trlval2 |  | 
						
							| 20 | 8 9 18 19 | syl3anc |  | 
						
							| 21 | 15 20 | eqtr3d |  | 
						
							| 22 | 1 2 3 4 5 6 7 | cdlemg13a |  | 
						
							| 23 | 22 | oveq1d |  | 
						
							| 24 |  | simp2 |  | 
						
							| 25 |  | simp31 |  | 
						
							| 26 | 1 4 5 6 | ltrnatneq |  | 
						
							| 27 | 8 9 11 16 25 26 | syl131anc |  | 
						
							| 28 |  | simp32 |  | 
						
							| 29 |  | simp33 |  | 
						
							| 30 |  | simp11l |  | 
						
							| 31 |  | simp12l |  | 
						
							| 32 | 1 4 5 6 | ltrncoat |  | 
						
							| 33 | 8 24 31 32 | syl3anc |  | 
						
							| 34 |  | simp13l |  | 
						
							| 35 | 1 4 5 6 | ltrncoat |  | 
						
							| 36 | 8 24 34 35 | syl3anc |  | 
						
							| 37 | 2 4 | hlatjcom |  | 
						
							| 38 | 30 33 36 37 | syl3anc |  | 
						
							| 39 | 2 4 | hlatjcom |  | 
						
							| 40 | 30 31 34 39 | syl3anc |  | 
						
							| 41 | 29 38 40 | 3netr3d |  | 
						
							| 42 | 1 2 3 4 5 6 7 | cdlemg13a |  | 
						
							| 43 | 8 16 11 24 27 28 41 42 | syl313anc |  | 
						
							| 44 | 43 | oveq1d |  | 
						
							| 45 | 21 23 44 | 3eqtr4d |  |