Mathbox for Glauco Siliprandi |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > Mathboxes > ge0lere | Structured version Visualization version GIF version |
Description: A nonnegative extended Real number smaller than or equal to a Real number, is a Real number. (Contributed by Glauco Siliprandi, 24-Dec-2020.) |
Ref | Expression |
---|---|
ge0lere.a | ⊢ (𝜑 → 𝐴 ∈ ℝ) |
ge0lere.b | ⊢ (𝜑 → 𝐵 ∈ (0[,]+∞)) |
ge0lere.l | ⊢ (𝜑 → 𝐵 ≤ 𝐴) |
Ref | Expression |
---|---|
ge0lere | ⊢ (𝜑 → 𝐵 ∈ ℝ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ge0lere.b | . 2 ⊢ (𝜑 → 𝐵 ∈ (0[,]+∞)) | |
2 | iccssxr 12813 | . . . 4 ⊢ (0[,]+∞) ⊆ ℝ* | |
3 | 2, 1 | sseldi 3964 | . . 3 ⊢ (𝜑 → 𝐵 ∈ ℝ*) |
4 | pnfxr 10689 | . . . 4 ⊢ +∞ ∈ ℝ* | |
5 | 4 | a1i 11 | . . 3 ⊢ (𝜑 → +∞ ∈ ℝ*) |
6 | ge0lere.a | . . . . 5 ⊢ (𝜑 → 𝐴 ∈ ℝ) | |
7 | 6 | rexrd 10685 | . . . 4 ⊢ (𝜑 → 𝐴 ∈ ℝ*) |
8 | ge0lere.l | . . . 4 ⊢ (𝜑 → 𝐵 ≤ 𝐴) | |
9 | 6 | ltpnfd 12510 | . . . 4 ⊢ (𝜑 → 𝐴 < +∞) |
10 | 3, 7, 5, 8, 9 | xrlelttrd 12547 | . . 3 ⊢ (𝜑 → 𝐵 < +∞) |
11 | 3, 5, 10 | xrltned 41618 | . 2 ⊢ (𝜑 → 𝐵 ≠ +∞) |
12 | ge0xrre 41800 | . 2 ⊢ ((𝐵 ∈ (0[,]+∞) ∧ 𝐵 ≠ +∞) → 𝐵 ∈ ℝ) | |
13 | 1, 11, 12 | syl2anc 586 | 1 ⊢ (𝜑 → 𝐵 ∈ ℝ) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∈ wcel 2110 ≠ wne 3016 class class class wbr 5058 (class class class)co 7150 ℝcr 10530 0cc0 10531 +∞cpnf 10666 ℝ*cxr 10668 ≤ cle 10670 [,]cicc 12735 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1907 ax-6 1966 ax-7 2011 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2157 ax-12 2173 ax-ext 2793 ax-sep 5195 ax-nul 5202 ax-pow 5258 ax-pr 5321 ax-un 7455 ax-cnex 10587 ax-resscn 10588 ax-1cn 10589 ax-addrcl 10592 ax-rnegex 10602 ax-cnre 10604 ax-pre-lttri 10605 ax-pre-lttrn 10606 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1536 df-ex 1777 df-nf 1781 df-sb 2066 df-mo 2618 df-eu 2650 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ne 3017 df-nel 3124 df-ral 3143 df-rex 3144 df-rab 3147 df-v 3496 df-sbc 3772 df-csb 3883 df-dif 3938 df-un 3940 df-in 3942 df-ss 3951 df-nul 4291 df-if 4467 df-pw 4540 df-sn 4561 df-pr 4563 df-op 4567 df-uni 4832 df-iun 4913 df-br 5059 df-opab 5121 df-mpt 5139 df-id 5454 df-po 5468 df-so 5469 df-xp 5555 df-rel 5556 df-cnv 5557 df-co 5558 df-dm 5559 df-rn 5560 df-res 5561 df-ima 5562 df-iota 6308 df-fun 6351 df-fn 6352 df-f 6353 df-f1 6354 df-fo 6355 df-f1o 6356 df-fv 6357 df-ov 7153 df-oprab 7154 df-mpo 7155 df-1st 7683 df-2nd 7684 df-er 8283 df-en 8504 df-dom 8505 df-sdom 8506 df-pnf 10671 df-mnf 10672 df-xr 10673 df-ltxr 10674 df-le 10675 df-ico 12738 df-icc 12739 |
This theorem is referenced by: hspmbllem2 42903 hspmbllem3 42904 |
Copyright terms: Public domain | W3C validator |