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Related theorems GIF version |
| Description: Restricted specialization, using implicit substitition. |
| Ref | Expression |
|---|---|
| rcla4v.1 | ⊢ (x = A → (φ ↔ ψ)) |
| Ref | Expression |
|---|---|
| rcla4v | ⊢ (A ∈ B → (∀x ∈ B φ → ψ)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ax-17 1007 | . 2 ⊢ (ψ → ∀xψ) | |
| 2 | rcla4v.1 | . 2 ⊢ (x = A → (φ ↔ ψ)) | |
| 3 | 1, 2 | rcla4 1917 | 1 ⊢ (A ∈ B → (∀x ∈ B φ → ψ)) |