| 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 12941 | . 2 ⊢ ℝ+ ⊆ ℝ | |
| 2 | ressxr 11180 | . 2 ⊢ ℝ ⊆ ℝ* | |
| 3 | 1, 2 | sstri 3932 | 1 ⊢ ℝ+ ⊆ ℝ* |
| Colors of variables: wff setvar class |
| Syntax hints: ⊆ wss 3890 ℝcr 11028 ℝ*cxr 11169 ℝ+crp 12933 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-ext 2709 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-tru 1545 df-ex 1782 df-sb 2069 df-clab 2716 df-cleq 2729 df-clel 2812 df-rab 3391 df-v 3432 df-un 3895 df-ss 3907 df-xr 11174 df-rp 12934 |
| This theorem is referenced by: cnrefiisplem 46275 |
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