| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > eqcomd | Structured version Visualization version Unicode version | ||
| Description: Deduction from commutative law for class equality. (Contributed by NM, 15-Aug-1994.) Allow shortening of eqcom 2629. (Revised by Wolf Lammen, 19-Nov-2019.) |
| Ref | Expression |
|---|---|
| eqcomd.1 |
|
| Ref | Expression |
|---|---|
| eqcomd |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqid 2622 |
. 2
| |
| 2 | eqcomd.1 |
. . 3
| |
| 3 | 2 | eqeq1d 2624 |
. 2
|
| 4 | 1, 3 | mpbii 223 |
1
|
| Copyright terms: Public domain | W3C validator |