| 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 12624 | . 2 ⊢ (𝜑 → 𝐴 ∈ ℝ) |
| 3 | 2 | rexrd 11186 | 1 ⊢ (𝜑 → 𝐴 ∈ ℝ*) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2119 ℝ*cxr 11169 ℤcz 12515 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-ext 2711 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3or 1093 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-sb 2074 df-clab 2718 df-cleq 2731 df-clel 2814 df-rab 3392 df-v 3433 df-dif 3886 df-un 3888 df-ss 3900 df-nul 4262 df-if 4455 df-sn 4556 df-pr 4558 df-op 4562 df-uni 4839 df-br 5073 df-iota 6441 df-fv 6493 df-ov 7359 df-xr 11174 df-neg 11371 df-z 12516 |
| This theorem is referenced by: hoicvr 46991 |
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