| Step | Hyp | Ref | Expression | 
						
							| 1 |  | ordtypelem.1 |  | 
						
							| 2 |  | ordtypelem.2 |  | 
						
							| 3 |  | ordtypelem.3 |  | 
						
							| 4 |  | ordtypelem.5 |  | 
						
							| 5 |  | ordtypelem.6 |  | 
						
							| 6 |  | ordtypelem.7 |  | 
						
							| 7 |  | ordtypelem.8 |  | 
						
							| 8 | 1 2 3 4 5 6 7 | ordtypelem2 |  | 
						
							| 9 | 1 | tfr1a |  | 
						
							| 10 | 9 | simpri |  | 
						
							| 11 |  | limord |  | 
						
							| 12 | 10 11 | ax-mp |  | 
						
							| 13 |  | ordin |  | 
						
							| 14 | 8 12 13 | sylancl |  | 
						
							| 15 | 1 2 3 4 5 6 7 | ordtypelem4 |  | 
						
							| 16 | 15 | fdmd |  | 
						
							| 17 |  | ordeq |  | 
						
							| 18 | 16 17 | syl |  | 
						
							| 19 | 14 18 | mpbird |  | 
						
							| 20 | 15 | ffdmd |  | 
						
							| 21 | 19 20 | jca |  |