Description: Define the class of ortholattices. Definition from Kalmbach p. 16. (Contributed by NM, 18-Sep-2011)
| Ref | Expression | ||
|---|---|---|---|
| Assertion | df-ol | |- OL = ( Lat i^i OP )  | 
				
| Step | Hyp | Ref | Expression | 
|---|---|---|---|
| 0 | col | |- OL  | 
						|
| 1 | clat | |- Lat  | 
						|
| 2 | cops | |- OP  | 
						|
| 3 | 1 2 | cin | |- ( Lat i^i OP )  | 
						
| 4 | 0 3 | wceq | |- OL = ( Lat i^i OP )  |