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| Description: Rule of Generalization.
The postulated inference rule of pure predicate
calculus. See e.g. Rule 2 of [Hamilton] p. 74. This rule says that if
something is unconditionally true, then it is true for all values of a
variable. For example, if we have proved |
| Ref | Expression |
|---|---|
| ax-g.1 |
|
| Ref | Expression |
|---|---|
| ax-gen |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | wph |
. 2
| |
| 2 | vx |
. 2
| |
| 3 | 1, 2 | wal 1134 |
1
|