| 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 12728 | . 2 ⊢ (𝜑 → 𝐴 ∈ ℝ) |
| 3 | 2 | rexrd 11286 | 1 ⊢ (𝜑 → 𝐴 ∈ ℝ*) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2145 ℝ*cxr 11269 ℤcz 12618 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-ext 2732 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-sb 2100 df-clab 2739 df-cleq 2752 df-clel 2835 df-rab 3413 df-v 3452 df-dif 3902 df-un 3904 df-ss 3916 df-nul 4280 df-if 4483 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-br 5104 df-iota 6489 df-fv 6541 df-ov 7417 df-xr 11274 df-neg 11471 df-z 12619 |
| This theorem is used by: hoicvr 47379 |
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