| Mathbox for Glauco Siliprandi |
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| Mirrors > Home > MPE Home > Th. List > Mathboxes > rpssxr | Structured version Visualization version GIF version | ||
| Description: The positive reals are a subset of the extended reals. (Contributed by Glauco Siliprandi, 5-Feb-2022.) |
| Ref | Expression |
|---|---|
| rpssxr | ⊢ ℝ+ ⊆ ℝ* |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | rpssre 12994 | . 2 ⊢ ℝ+ ⊆ ℝ | |
| 2 | ressxr 11219 | . 2 ⊢ ℝ ⊆ ℝ* | |
| 3 | 1, 2 | sstri 3943 | 1 ⊢ ℝ+ ⊆ ℝ* |
| Colors of variables: wff setvar class |
| Syntax hints: ⊆ wss 3902 ℝcr 11065 ℝ*cxr 11208 ℝ+crp 12986 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-ext 2733 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-tru 1562 df-ex 1799 df-sb 2090 df-clab 2740 df-cleq 2753 df-clel 2836 df-rab 3414 df-v 3455 df-un 3907 df-ss 3919 df-xr 11213 df-rp 12987 |
| This theorem is referenced by: cnrefiisplem 46363 |
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