| Step | Hyp | Ref | Expression | 
						
							| 1 |  | mapdat.h |  | 
						
							| 2 |  | mapdat.m |  | 
						
							| 3 |  | mapdat.u |  | 
						
							| 4 |  | mapdat.a |  | 
						
							| 5 |  | mapdat.c |  | 
						
							| 6 |  | mapdat.b |  | 
						
							| 7 |  | mapdat.k |  | 
						
							| 8 |  | mapdcnvat.q |  | 
						
							| 9 |  | eqid |  | 
						
							| 10 | 1 3 7 | dvhlmod |  | 
						
							| 11 |  | eqid |  | 
						
							| 12 | 11 9 | lsssn0 |  | 
						
							| 13 | 10 12 | syl |  | 
						
							| 14 | 1 2 3 9 7 13 | mapdcnvid1N |  | 
						
							| 15 |  | eqid |  | 
						
							| 16 | 1 2 3 11 5 15 7 | mapd0 |  | 
						
							| 17 | 16 | fveq2d |  | 
						
							| 18 | 14 17 | eqtr3d |  | 
						
							| 19 |  | eqid |  | 
						
							| 20 | 1 5 7 | lcdlvec |  | 
						
							| 21 | 15 6 19 20 8 | lsatcv0 |  | 
						
							| 22 | 1 5 7 | lcdlmod |  | 
						
							| 23 |  | eqid |  | 
						
							| 24 | 15 23 | lsssn0 |  | 
						
							| 25 | 22 24 | syl |  | 
						
							| 26 | 1 2 5 23 7 | mapdrn2 |  | 
						
							| 27 | 25 26 | eleqtrrd |  | 
						
							| 28 | 1 2 7 27 | mapdcnvid2 |  | 
						
							| 29 | 23 6 22 8 | lsatlssel |  | 
						
							| 30 | 29 26 | eleqtrrd |  | 
						
							| 31 | 1 2 7 30 | mapdcnvid2 |  | 
						
							| 32 | 21 28 31 | 3brtr4d |  | 
						
							| 33 |  | eqid |  | 
						
							| 34 | 1 2 3 9 7 27 | mapdcnvcl |  | 
						
							| 35 | 1 2 3 9 7 30 | mapdcnvcl |  | 
						
							| 36 | 1 2 3 9 33 5 19 7 34 35 | mapdcv |  | 
						
							| 37 | 32 36 | mpbird |  | 
						
							| 38 | 18 37 | eqbrtrd |  | 
						
							| 39 | 1 3 7 | dvhlvec |  | 
						
							| 40 | 11 9 4 33 39 35 | lsat0cv |  | 
						
							| 41 | 38 40 | mpbird |  |