| Mathbox for Glauco Siliprandi |
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| Mirrors > Home > MPE Home > Th. List > Mathboxes > zxrd | Structured version Visualization version GIF version | ||
| Description: An integer is an extended real number. (Contributed by Glauco Siliprandi, 2-Jan-2022.) |
| Ref | Expression |
|---|---|
| zxrd.1 | ⊢ (𝜑 → 𝐴 ∈ ℤ) |
| Ref | Expression |
|---|---|
| zxrd | ⊢ (𝜑 → 𝐴 ∈ ℝ*) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | zxrd.1 | . . 3 ⊢ (𝜑 → 𝐴 ∈ ℤ) | |
| 2 | 1 | zred 12816 | . 2 ⊢ (𝜑 → 𝐴 ∈ ℝ) |
| 3 | 2 | rexrd 11372 | 1 ⊢ (𝜑 → 𝐴 ∈ ℝ*) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2146 ℝ*cxr 11355 ℤcz 12706 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1944 ax-6 2001 ax-7 2042 ax-8 2148 ax-9 2156 ax-ext 2735 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-sb 2101 df-clab 2742 df-cleq 2755 df-clel 2839 df-rab 3417 df-v 3456 df-ss 3901 df-dif 4050 df-un 4154 df-nul 4282 df-if 4486 df-sn 4589 df-pr 4591 df-op 4839 df-uni 4871 df-br 5107 df-iota 6501 df-fv 6555 df-ov 7433 df-xr 11360 df-neg 11557 df-z 12707 |
| This theorem is used by: hoicvr 47700 |
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