| Step | Hyp | Ref | Expression | 
						
							| 1 |  | zlmodzxzldep.z |  | 
						
							| 2 |  | zlmodzxzldep.a |  | 
						
							| 3 |  | zlmodzxzldep.b |  | 
						
							| 4 |  | elmapi |  | 
						
							| 5 |  | prex |  | 
						
							| 6 | 3 5 | eqeltri |  | 
						
							| 7 | 6 | fsn2 |  | 
						
							| 8 |  | oveq1 |  | 
						
							| 9 | 8 | adantl |  | 
						
							| 10 | 1 | zlmodzxzlmod |  | 
						
							| 11 | 10 | simpli |  | 
						
							| 12 | 11 | a1i |  | 
						
							| 13 |  | 2z |  | 
						
							| 14 |  | 4z |  | 
						
							| 15 | 1 | zlmodzxzel |  | 
						
							| 16 | 13 14 15 | mp2an |  | 
						
							| 17 | 3 16 | eqeltri |  | 
						
							| 18 | 17 | a1i |  | 
						
							| 19 |  | simpl |  | 
						
							| 20 |  | eqid |  | 
						
							| 21 | 10 | simpri |  | 
						
							| 22 |  | eqid |  | 
						
							| 23 |  | eqid |  | 
						
							| 24 | 20 21 22 23 | lincvalsng |  | 
						
							| 25 | 12 18 19 24 | syl3anc |  | 
						
							| 26 | 9 25 | eqtrd |  | 
						
							| 27 |  | eqid |  | 
						
							| 28 |  | eqid |  | 
						
							| 29 | 1 27 23 28 2 3 | zlmodzxznm |  | 
						
							| 30 |  | r19.26 |  | 
						
							| 31 |  | oveq1 |  | 
						
							| 32 | 31 | neeq1d |  | 
						
							| 33 | 32 | rspcv |  | 
						
							| 34 |  | zringbas |  | 
						
							| 35 | 34 | eqcomi |  | 
						
							| 36 | 35 | eleq2i |  | 
						
							| 37 | 36 | biimpi |  | 
						
							| 38 | 37 | adantr |  | 
						
							| 39 | 33 38 | syl11 |  | 
						
							| 40 | 39 | adantl |  | 
						
							| 41 | 30 40 | sylbi |  | 
						
							| 42 | 29 41 | ax-mp |  | 
						
							| 43 | 26 42 | eqnetrd |  | 
						
							| 44 | 7 43 | sylbi |  | 
						
							| 45 | 4 44 | syl |  |