Description: The set of words over a set is a set, inference form. (Contributed by AV, 23-May-2021)
| Ref | Expression | ||
|---|---|---|---|
| Hypothesis | wrdexi.1 | |- S e. _V | |
| Assertion | wrdexi | |- Word S e. _V | 
| Step | Hyp | Ref | Expression | 
|---|---|---|---|
| 1 | wrdexi.1 | |- S e. _V | |
| 2 | wrdexg | |- ( S e. _V -> Word S e. _V ) | |
| 3 | 1 2 | ax-mp | |- Word S e. _V |