Description: Generalization of antecedent. (Contributed by NM, 5-Jan-1993)
| Ref | Expression | ||
|---|---|---|---|
| Hypothesis | sps.1 | |- ( ph -> ps ) |
|
| Assertion | sps | |- ( A. x ph -> ps ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | sps.1 | |- ( ph -> ps ) |
|
| 2 | sp | |- ( A. x ph -> ph ) |
|
| 3 | 2 1 | syl | |- ( A. x ph -> ps ) |