| Step | Hyp | Ref | Expression | 
						
							| 1 |  | cdlemk4.b |  | 
						
							| 2 |  | cdlemk4.l |  | 
						
							| 3 |  | cdlemk4.j |  | 
						
							| 4 |  | cdlemk4.m |  | 
						
							| 5 |  | cdlemk4.a |  | 
						
							| 6 |  | cdlemk4.h |  | 
						
							| 7 |  | cdlemk4.t |  | 
						
							| 8 |  | cdlemk4.r |  | 
						
							| 9 |  | cdlemk4.z |  | 
						
							| 10 |  | cdlemk4.y |  | 
						
							| 11 |  | cdlemk4.x |  | 
						
							| 12 | 1 2 3 4 5 6 7 8 9 10 11 | cdlemk36 |  | 
						
							| 13 |  | simp11l |  | 
						
							| 14 | 13 | hllatd |  | 
						
							| 15 |  | simp22l |  | 
						
							| 16 |  | simp11 |  | 
						
							| 17 |  | simp13l |  | 
						
							| 18 |  | simp13r |  | 
						
							| 19 | 1 5 6 7 8 | trlnidat |  | 
						
							| 20 | 16 17 18 19 | syl3anc |  | 
						
							| 21 | 1 3 5 | hlatjcl |  | 
						
							| 22 | 13 15 20 21 | syl3anc |  | 
						
							| 23 |  | simp3l |  | 
						
							| 24 |  | simp3r1 |  | 
						
							| 25 | 1 5 6 7 8 | trlnidat |  | 
						
							| 26 | 16 23 24 25 | syl3anc |  | 
						
							| 27 | 1 3 5 | hlatjcl |  | 
						
							| 28 | 13 15 26 27 | syl3anc |  | 
						
							| 29 |  | simp21 |  | 
						
							| 30 | 2 5 6 7 | ltrnat |  | 
						
							| 31 | 16 29 15 30 | syl3anc |  | 
						
							| 32 | 1 5 | atbase |  | 
						
							| 33 | 31 32 | syl |  | 
						
							| 34 |  | simp12l |  | 
						
							| 35 | 6 7 | ltrncnv |  | 
						
							| 36 | 16 34 35 | syl2anc |  | 
						
							| 37 | 6 7 | ltrnco |  | 
						
							| 38 | 16 23 36 37 | syl3anc |  | 
						
							| 39 | 1 6 7 8 | trlcl |  | 
						
							| 40 | 16 38 39 | syl2anc |  | 
						
							| 41 | 1 3 | latjcl |  | 
						
							| 42 | 14 33 40 41 | syl3anc |  | 
						
							| 43 | 1 4 | latmcl |  | 
						
							| 44 | 14 28 42 43 | syl3anc |  | 
						
							| 45 | 9 44 | eqeltrid |  | 
						
							| 46 | 6 7 | ltrncnv |  | 
						
							| 47 | 16 23 46 | syl2anc |  | 
						
							| 48 | 6 7 | ltrnco |  | 
						
							| 49 | 16 17 47 48 | syl3anc |  | 
						
							| 50 | 1 6 7 8 | trlcl |  | 
						
							| 51 | 16 49 50 | syl2anc |  | 
						
							| 52 | 1 3 | latjcl |  | 
						
							| 53 | 14 45 51 52 | syl3anc |  | 
						
							| 54 | 1 2 4 | latmle1 |  | 
						
							| 55 | 14 22 53 54 | syl3anc |  | 
						
							| 56 | 10 55 | eqbrtrid |  | 
						
							| 57 | 12 56 | eqbrtrd |  |