| 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 |  | simp11l |  | 
						
							| 9 |  | simp12l |  | 
						
							| 10 |  | simp11 |  | 
						
							| 11 |  | simp2r |  | 
						
							| 12 | 1 4 5 6 | ltrnat |  | 
						
							| 13 | 10 11 9 12 | syl3anc |  | 
						
							| 14 | 1 2 4 | hlatlej1 |  | 
						
							| 15 | 8 9 13 14 | syl3anc |  | 
						
							| 16 |  | simp32 |  | 
						
							| 17 |  | simp2l |  | 
						
							| 18 |  | simp12 |  | 
						
							| 19 | 1 4 5 6 | ltrnel |  | 
						
							| 20 | 10 11 18 19 | syl3anc |  | 
						
							| 21 | 1 2 3 4 5 6 7 | trlval2 |  | 
						
							| 22 | 10 17 20 21 | syl3anc |  | 
						
							| 23 | 1 2 3 4 5 6 7 | trlval2 |  | 
						
							| 24 | 10 11 18 23 | syl3anc |  | 
						
							| 25 | 16 22 24 | 3eqtr3d |  | 
						
							| 26 | 25 | oveq2d |  | 
						
							| 27 | 1 4 5 6 | ltrncoat |  | 
						
							| 28 | 10 17 11 9 27 | syl121anc |  | 
						
							| 29 |  | eqid |  | 
						
							| 30 | 1 2 3 4 5 29 | cdleme0cp |  | 
						
							| 31 | 10 20 28 30 | syl12anc |  | 
						
							| 32 |  | eqid |  | 
						
							| 33 | 1 2 3 4 5 32 | cdleme0cq |  | 
						
							| 34 | 10 9 20 33 | syl12anc |  | 
						
							| 35 | 26 31 34 | 3eqtr3rd |  | 
						
							| 36 | 15 35 | breqtrd |  | 
						
							| 37 | 1 2 4 | hlatlej2 |  | 
						
							| 38 | 8 13 28 37 | syl3anc |  | 
						
							| 39 | 8 | hllatd |  | 
						
							| 40 |  | eqid |  | 
						
							| 41 | 40 4 | atbase |  | 
						
							| 42 | 9 41 | syl |  | 
						
							| 43 | 40 4 | atbase |  | 
						
							| 44 | 28 43 | syl |  | 
						
							| 45 | 40 2 4 | hlatjcl |  | 
						
							| 46 | 8 13 28 45 | syl3anc |  | 
						
							| 47 | 40 1 2 | latjle12 |  | 
						
							| 48 | 39 42 44 46 47 | syl13anc |  | 
						
							| 49 | 36 38 48 | mpbi2and |  | 
						
							| 50 |  | simp13 |  | 
						
							| 51 |  | simp33 |  | 
						
							| 52 | 1 2 3 4 5 6 | cdlemg11a |  | 
						
							| 53 | 10 18 50 17 11 51 52 | syl123anc |  | 
						
							| 54 | 53 | necomd |  | 
						
							| 55 | 1 2 4 | ps-1 |  | 
						
							| 56 | 8 9 28 54 13 28 55 | syl132anc |  | 
						
							| 57 | 49 56 | mpbid |  |