Description: Define class of all Abelian groups. (Contributed by NM, 17-Oct-2011) (Revised by Mario Carneiro, 6-Jan-2015)
| Ref | Expression | ||
|---|---|---|---|
| Assertion | df-abl | |- Abel = ( Grp i^i CMnd )  | 
				
| Step | Hyp | Ref | Expression | 
|---|---|---|---|
| 0 | cabl | |- Abel  | 
						|
| 1 | cgrp | |- Grp  | 
						|
| 2 | ccmn | |- CMnd  | 
						|
| 3 | 1 2 | cin | |- ( Grp i^i CMnd )  | 
						
| 4 | 0 3 | wceq | |- Abel = ( Grp i^i CMnd )  |