| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > mpteq2dva | Structured version Visualization version GIF version | ||
| Description: Slightly more general equality inference for the maps to notation. (Contributed by Scott Fenton, 25-Apr-2012.) |
| Ref | Expression |
|---|---|
| mpteq2dva.1 | ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 = 𝐶) |
| Ref | Expression |
|---|---|
| mpteq2dva | ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ 𝐵) = (𝑥 ∈ 𝐴 ↦ 𝐶)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | nfv 1843 | . 2 ⊢ Ⅎ𝑥𝜑 | |
| 2 | mpteq2dva.1 | . 2 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 = 𝐶) | |
| 3 | 1, 2 | mpteq2da 4743 | 1 ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ 𝐵) = (𝑥 ∈ 𝐴 ↦ 𝐶)) |
| Copyright terms: Public domain | W3C validator |