| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > eqeltri | Structured version Visualization version Unicode version | ||
| Description: Substitution of equal classes into membership relation. (Contributed by NM, 21-Jun-1993.) |
| Ref | Expression |
|---|---|
| eqeltr.1 |
|
| eqeltr.2 |
|
| Ref | Expression |
|---|---|
| eqeltri |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqeltr.2 |
. 2
| |
| 2 | eqeltr.1 |
. . 3
| |
| 3 | 2 | eleq1i 2692 |
. 2
|
| 4 | 1, 3 | mpbir 221 |
1
|
| Copyright terms: Public domain | W3C validator |