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| Mirrors > Home > ILE Home > Th. List > eqcomd | Unicode version | ||
| Description: Deduction from commutative law for class equality. (Contributed by NM, 15-Aug-1994.) | 
| Ref | Expression | 
|---|---|
| eqcomd.1 | 
 | 
| Ref | Expression | 
|---|---|
| eqcomd | 
 | 
| Step | Hyp | Ref | Expression | 
|---|---|---|---|
| 1 | eqcomd.1 | 
. 2
 | |
| 2 | eqcom 2198 | 
. 2
 | |
| 3 | 1, 2 | sylib 122 | 
1
 | 
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