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| Mirrors > Home > MPE Home > Th. List > xrnltled | Structured version Visualization version GIF version | ||
| Description: "Not less than" implies "less than or equal to". (Contributed by Glauco Siliprandi, 11-Dec-2019.) |
| Ref | Expression |
|---|---|
| xrnltled.1 | ⊢ (𝜑 → 𝐴 ∈ ℝ*) |
| xrnltled.2 | ⊢ (𝜑 → 𝐵 ∈ ℝ*) |
| xrnltled.3 | ⊢ (𝜑 → ¬ 𝐵 < 𝐴) |
| Ref | Expression |
|---|---|
| xrnltled | ⊢ (𝜑 → 𝐴 ≤ 𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | xrnltled.3 | . 2 ⊢ (𝜑 → ¬ 𝐵 < 𝐴) | |
| 2 | xrnltled.1 | . . 3 ⊢ (𝜑 → 𝐴 ∈ ℝ*) | |
| 3 | xrnltled.2 | . . 3 ⊢ (𝜑 → 𝐵 ∈ ℝ*) | |
| 4 | 2, 3 | xrlenltd 11279 | . 2 ⊢ (𝜑 → (𝐴 ≤ 𝐵 ↔ ¬ 𝐵 < 𝐴)) |
| 5 | 1, 4 | mpbird 260 | 1 ⊢ (𝜑 → 𝐴 ≤ 𝐵) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 → wi 4 ∈ wcel 2143 class class class wbr 5109 ℝ*cxr 11246 < clt 11247 ≤ cle 11248 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-ext 2735 ax-sep 5257 ax-pr 5404 |
| This proof depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-sb 2097 df-clab 2742 df-cleq 2755 df-clel 2838 df-ral 3080 df-rex 3090 df-rab 3417 df-v 3457 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-nul 4287 df-if 4488 df-sn 4590 df-pr 4592 df-op 4596 df-br 5110 df-opab 5174 df-xp 5667 df-cnv 5669 df-le 11253 |
| This theorem is used by: supxrub 13354 infxrlb 13365 ixxub 13397 ixxlb 13398 supicclub2 13535 radcnvle 26592 xrge0infssd 33115 infxrge0lb 33118 pimxrneun 46230 liminflbuz2 46557 icccncfext 46629 |
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