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| Mirrors > Home > MPE Home > Th. List > rsp | Structured version Visualization version GIF version | ||
| Description: Restricted specialization. (Contributed by NM, 17-Oct-1996.) |
| Ref | Expression |
|---|---|
| rsp | ⊢ (∀𝑥 ∈ 𝐴 𝜑 → (𝑥 ∈ 𝐴 → 𝜑)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-ral 3053 | . 2 ⊢ (∀𝑥 ∈ 𝐴 𝜑 ↔ ∀𝑥(𝑥 ∈ 𝐴 → 𝜑)) | |
| 2 | sp 2184 | . 2 ⊢ (∀𝑥(𝑥 ∈ 𝐴 → 𝜑) → (𝑥 ∈ 𝐴 → 𝜑)) | |
| 3 | 1, 2 | sylbi 217 | 1 ⊢ (∀𝑥 ∈ 𝐴 𝜑 → (𝑥 ∈ 𝐴 → 𝜑)) |
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