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Mirrors > Home > MPE Home > Th. List > xrletrid | Structured version Visualization version GIF version |
Description: Trichotomy law for extended reals. (Contributed by Glauco Siliprandi, 17-Aug-2020.) |
Ref | Expression |
---|---|
xrletrid.1 | ⊢ (𝜑 → 𝐴 ∈ ℝ*) |
xrletrid.2 | ⊢ (𝜑 → 𝐵 ∈ ℝ*) |
xrletrid.3 | ⊢ (𝜑 → 𝐴 ≤ 𝐵) |
xrletrid.4 | ⊢ (𝜑 → 𝐵 ≤ 𝐴) |
Ref | Expression |
---|---|
xrletrid | ⊢ (𝜑 → 𝐴 = 𝐵) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | xrletrid.3 | . 2 ⊢ (𝜑 → 𝐴 ≤ 𝐵) | |
2 | xrletrid.4 | . 2 ⊢ (𝜑 → 𝐵 ≤ 𝐴) | |
3 | xrletrid.1 | . . 3 ⊢ (𝜑 → 𝐴 ∈ ℝ*) | |
4 | xrletrid.2 | . . 3 ⊢ (𝜑 → 𝐵 ∈ ℝ*) | |
5 | xrletri3 12888 | . . 3 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → (𝐴 = 𝐵 ↔ (𝐴 ≤ 𝐵 ∧ 𝐵 ≤ 𝐴))) | |
6 | 3, 4, 5 | syl2anc 584 | . 2 ⊢ (𝜑 → (𝐴 = 𝐵 ↔ (𝐴 ≤ 𝐵 ∧ 𝐵 ≤ 𝐴))) |
7 | 1, 2, 6 | mpbir2and 710 | 1 ⊢ (𝜑 → 𝐴 = 𝐵) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ wa 396 = wceq 1539 ∈ wcel 2106 class class class wbr 5074 ℝ*cxr 11008 ≤ cle 11010 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2709 ax-sep 5223 ax-nul 5230 ax-pow 5288 ax-pr 5352 ax-un 7588 ax-cnex 10927 ax-resscn 10928 ax-pre-lttri 10945 ax-pre-lttrn 10946 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2889 df-ne 2944 df-nel 3050 df-ral 3069 df-rex 3070 df-rab 3073 df-v 3434 df-sbc 3717 df-csb 3833 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-nul 4257 df-if 4460 df-pw 4535 df-sn 4562 df-pr 4564 df-op 4568 df-uni 4840 df-br 5075 df-opab 5137 df-mpt 5158 df-id 5489 df-po 5503 df-so 5504 df-xp 5595 df-rel 5596 df-cnv 5597 df-co 5598 df-dm 5599 df-rn 5600 df-res 5601 df-ima 5602 df-iota 6391 df-fun 6435 df-fn 6436 df-f 6437 df-f1 6438 df-fo 6439 df-f1o 6440 df-fv 6441 df-er 8498 df-en 8734 df-dom 8735 df-sdom 8736 df-pnf 11011 df-mnf 11012 df-xr 11013 df-ltxr 11014 df-le 11015 |
This theorem is referenced by: supxrre 13061 infxrre 13070 ixxub 13100 ixxlb 13101 pcadd2 16591 psmetsym 23463 xmetsym 23500 imasdsf1olem 23526 ovolunnul 24664 ovolicc 24687 voliunlem3 24716 uniioovol 24743 uniiccvol 24744 ismbfd 24803 mbflimsup 24830 itg2itg1 24901 itg2seq 24907 itg2eqa 24910 itg2split 24914 itg2mono 24918 deg1add 25268 deg1mul2 25279 deg1tm 25283 xrgepnfd 42870 supxrge 42877 infxrpnf 42986 eliccnelico 43067 liminfgelimsup 43323 liminfgelimsupuz 43329 liminflimsupclim 43348 xlimliminflimsup 43403 ismbl4 43534 rrxsnicc 43841 sge0fsum 43925 sge0split 43947 sge0iunmptlemre 43953 sge0isum 43965 sge0xaddlem2 43972 sge0reuz 43985 meale0eq0 44016 carageniuncl 44061 caratheodorylem2 44065 caragenel2d 44070 omess0 44072 ovn0lem 44103 hoidmv1lelem2 44130 hoidmv1lelem3 44131 hoidmvlelem4 44136 ovnhoi 44141 ovolval2lem 44181 ovolval5lem3 44192 |
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