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Description: Deduction version of the power set axiom. (Contributed by Glauco Siliprandi, 26-Jun-2021)
| Ref | Expression | ||
|---|---|---|---|
| Hypothesis | pwexd.1 | ||
| Assertion | pwexd |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | pwexd.1 | ||
| 2 | pwexg | ||
| 3 | 1 2 | syl |