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| Mirrors > Home > MPE Home > Th. List > elfznn0 | Structured version Visualization version GIF version | ||
| Description: A member of a finite set of sequential nonnegative integers is a nonnegative integer. (Contributed by NM, 5-Aug-2005.) (Revised by Mario Carneiro, 28-Apr-2015.) |
| Ref | Expression |
|---|---|
| elfznn0 | ⊢ (𝐾 ∈ (0...𝑁) → 𝐾 ∈ ℕ0) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elfz2nn0 13659 | . 2 ⊢ (𝐾 ∈ (0...𝑁) ↔ (𝐾 ∈ ℕ0 ∧ 𝑁 ∈ ℕ0 ∧ 𝐾 ≤ 𝑁)) | |
| 2 | 1 | simp1bi 1145 | 1 ⊢ (𝐾 ∈ (0...𝑁) → 𝐾 ∈ ℕ0) |
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