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| Mirrors > Home > MPE Home > Th. List > ltsopr | Structured version Visualization version GIF version | ||
| Description: Positive real 'less than' is a strict ordering. Part of Proposition 9-3.3 of [Gleason] p. 122. (Contributed by NM, 25-Feb-1996.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| ltsopr | ⊢ <P Or P |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | pssirr 4059 | . . . 4 ⊢ ¬ 𝑥 ⊊ 𝑥 | |
| 2 | ltprord 11003 | . . . 4 ⊢ ((𝑥 ∈ P ∧ 𝑥 ∈ P) → (𝑥<P 𝑥 ↔ 𝑥 ⊊ 𝑥)) | |
| 3 | 1, 2 | mtbiri 330 | . . 3 ⊢ ((𝑥 ∈ P ∧ 𝑥 ∈ P) → ¬ 𝑥<P 𝑥) |
| 4 | 3 | anidms 576 | . 2 ⊢ (𝑥 ∈ P → ¬ 𝑥<P 𝑥) |
| 5 | psstr 4064 | . . 3 ⊢ ((𝑥 ⊊ 𝑦 ∧ 𝑦 ⊊ 𝑧) → 𝑥 ⊊ 𝑧) | |
| 6 | ltprord 11003 | . . . . . 6 ⊢ ((𝑥 ∈ P ∧ 𝑦 ∈ P) → (𝑥<P 𝑦 ↔ 𝑥 ⊊ 𝑦)) | |
| 7 | 6 | 3adant3 1148 | . . . . 5 ⊢ ((𝑥 ∈ P ∧ 𝑦 ∈ P ∧ 𝑧 ∈ P) → (𝑥<P 𝑦 ↔ 𝑥 ⊊ 𝑦)) |
| 8 | ltprord 11003 | . . . . . 6 ⊢ ((𝑦 ∈ P ∧ 𝑧 ∈ P) → (𝑦<P 𝑧 ↔ 𝑦 ⊊ 𝑧)) | |
| 9 | 8 | 3adant1 1146 | . . . . 5 ⊢ ((𝑥 ∈ P ∧ 𝑦 ∈ P ∧ 𝑧 ∈ P) → (𝑦<P 𝑧 ↔ 𝑦 ⊊ 𝑧)) |
| 10 | 7, 9 | anbi12d 643 | . . . 4 ⊢ ((𝑥 ∈ P ∧ 𝑦 ∈ P ∧ 𝑧 ∈ P) → ((𝑥<P 𝑦 ∧ 𝑦<P 𝑧) ↔ (𝑥 ⊊ 𝑦 ∧ 𝑦 ⊊ 𝑧))) |
| 11 | ltprord 11003 | . . . . 5 ⊢ ((𝑥 ∈ P ∧ 𝑧 ∈ P) → (𝑥<P 𝑧 ↔ 𝑥 ⊊ 𝑧)) | |
| 12 | 11 | 3adant2 1147 | . . . 4 ⊢ ((𝑥 ∈ P ∧ 𝑦 ∈ P ∧ 𝑧 ∈ P) → (𝑥<P 𝑧 ↔ 𝑥 ⊊ 𝑧)) |
| 13 | 10, 12 | imbi12d 347 | . . 3 ⊢ ((𝑥 ∈ P ∧ 𝑦 ∈ P ∧ 𝑧 ∈ P) → (((𝑥<P 𝑦 ∧ 𝑦<P 𝑧) → 𝑥<P 𝑧) ↔ ((𝑥 ⊊ 𝑦 ∧ 𝑦 ⊊ 𝑧) → 𝑥 ⊊ 𝑧))) |
| 14 | 5, 13 | mpbiri 261 | . 2 ⊢ ((𝑥 ∈ P ∧ 𝑦 ∈ P ∧ 𝑧 ∈ P) → ((𝑥<P 𝑦 ∧ 𝑦<P 𝑧) → 𝑥<P 𝑧)) |
| 15 | psslinpr 11004 | . . 3 ⊢ ((𝑥 ∈ P ∧ 𝑦 ∈ P) → (𝑥 ⊊ 𝑦 ∨ 𝑥 = 𝑦 ∨ 𝑦 ⊊ 𝑥)) | |
| 16 | biidd 265 | . . . 4 ⊢ ((𝑥 ∈ P ∧ 𝑦 ∈ P) → (𝑥 = 𝑦 ↔ 𝑥 = 𝑦)) | |
| 17 | ltprord 11003 | . . . . 5 ⊢ ((𝑦 ∈ P ∧ 𝑥 ∈ P) → (𝑦<P 𝑥 ↔ 𝑦 ⊊ 𝑥)) | |
| 18 | 17 | ancoms 463 | . . . 4 ⊢ ((𝑥 ∈ P ∧ 𝑦 ∈ P) → (𝑦<P 𝑥 ↔ 𝑦 ⊊ 𝑥)) |
| 19 | 6, 16, 18 | 3orbi123d 1459 | . . 3 ⊢ ((𝑥 ∈ P ∧ 𝑦 ∈ P) → ((𝑥<P 𝑦 ∨ 𝑥 = 𝑦 ∨ 𝑦<P 𝑥) ↔ (𝑥 ⊊ 𝑦 ∨ 𝑥 = 𝑦 ∨ 𝑦 ⊊ 𝑥))) |
| 20 | 15, 19 | mpbird 260 | . 2 ⊢ ((𝑥 ∈ P ∧ 𝑦 ∈ P) → (𝑥<P 𝑦 ∨ 𝑥 = 𝑦 ∨ 𝑦<P 𝑥)) |
| 21 | 4, 14, 20 | issoi 5596 | 1 ⊢ <P Or P |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ↔ wb 209 ∧ wa 400 ∨ w3o 1100 ∧ w3a 1101 ∈ wcel 2145 ⊊ wpss 3908 class class class wbr 5105 Or wor 5559 Pcnp 10832 <P cltp 10836 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1818 ax-4 1832 ax-5 1933 ax-6 1990 ax-7 2031 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2215 ax-ext 2737 ax-sep 5251 ax-nul 5261 ax-pr 5395 ax-un 7722 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1566 df-fal 1576 df-ex 1803 df-nf 1807 df-sb 2094 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-ral 3080 df-rex 3090 df-rmo 3370 df-reu 3371 df-rab 3418 df-v 3459 df-sbc 3748 df-csb 3856 df-dif 3910 df-un 3912 df-in 3914 df-ss 3924 df-pss 3927 df-nul 4289 df-if 4484 df-pw 4560 df-sn 4586 df-pr 4588 df-op 4592 df-uni 4869 df-iun 4954 df-br 5106 df-opab 5168 df-mpt 5187 df-tr 5213 df-id 5547 df-eprel 5552 df-po 5560 df-so 5561 df-fr 5605 df-we 5607 df-xp 5658 df-rel 5659 df-cnv 5660 df-co 5661 df-dm 5662 df-rn 5663 df-res 5664 df-ima 5665 df-pred 6292 df-ord 6353 df-on 6354 df-lim 6355 df-suc 6356 df-iota 6481 df-fun 6527 df-fn 6528 df-f 6529 df-f1 6530 df-fo 6531 df-f1o 6532 df-fv 6533 df-ov 7403 df-oprab 7404 df-mpo 7405 df-om 7851 df-1st 7974 df-2nd 7975 df-frecs 8266 df-wrecs 8297 df-recs 8346 df-rdg 8385 df-oadd 8445 df-omul 8446 df-er 8682 df-ni 10845 df-mi 10847 df-lti 10848 df-ltpq 10883 df-enq 10884 df-nq 10885 df-ltnq 10891 df-np 10954 df-ltp 10958 |
| This theorem is referenced by: ltapr 11018 addcanpr 11019 suplem2pr 11026 ltsosr 11067 |
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