| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > ILE Home > Th. List > eqeltrd | Unicode version | ||
| Description: Substitution of equal classes into membership relation, deduction form. (Contributed by Raph Levien, 10-Dec-2002.) |
| Ref | Expression |
|---|---|
| eqeltrd.1 |
|
| eqeltrd.2 |
|
| Ref | Expression |
|---|---|
| eqeltrd |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqeltrd.2 |
. 2
| |
| 2 | eqeltrd.1 |
. . 3
| |
| 3 | 2 | eleq1d 2265 |
. 2
|
| 4 | 1, 3 | mpbird 167 |
1
|
| Copyright terms: Public domain | W3C validator |