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Mirrors > Home > MPE Home > Th. List > uzid | Structured version Visualization version GIF version |
Description: Membership of the least member in an upper set of integers. (Contributed by NM, 2-Sep-2005.) |
Ref | Expression |
---|---|
uzid | ⊢ (𝑀 ∈ ℤ → 𝑀 ∈ (ℤ≥‘𝑀)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | id 22 | . 2 ⊢ (𝑀 ∈ ℤ → 𝑀 ∈ ℤ) | |
2 | zre 12332 | . . 3 ⊢ (𝑀 ∈ ℤ → 𝑀 ∈ ℝ) | |
3 | 2 | leidd 11550 | . 2 ⊢ (𝑀 ∈ ℤ → 𝑀 ≤ 𝑀) |
4 | eluz1 12595 | . 2 ⊢ (𝑀 ∈ ℤ → (𝑀 ∈ (ℤ≥‘𝑀) ↔ (𝑀 ∈ ℤ ∧ 𝑀 ≤ 𝑀))) | |
5 | 1, 3, 4 | mpbir2and 710 | 1 ⊢ (𝑀 ∈ ℤ → 𝑀 ∈ (ℤ≥‘𝑀)) |
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