| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > ILE Home > Th. List > r19.21bi | Unicode version | ||
| Description: Inference from Theorem 19.21 of [Margaris] p. 90. (Restricted quantifier version.) (Contributed by NM, 20-Nov-1994.) |
| Ref | Expression |
|---|---|
| r19.21bi.1 |
|
| Ref | Expression |
|---|---|
| r19.21bi |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | r19.21bi.1 |
. . . 4
| |
| 2 | df-ral 2480 |
. . . 4
| |
| 3 | 1, 2 | sylib 122 |
. . 3
|
| 4 | 3 | 19.21bi 1572 |
. 2
|
| 5 | 4 | imp 124 |
1
|
| Copyright terms: Public domain | W3C validator |