![]() |
Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
|
Mirrors > Home > ILE Home > Th. List > axpre-apti | GIF version |
Description: Apartness of reals is
tight. Axiom for real and complex numbers,
derived from set theory. This construction-dependent theorem should not
be referenced directly; instead, use ax-pre-apti 7826.
(Contributed by Jim Kingdon, 29-Jan-2020.) (New usage is discouraged.) |
Ref | Expression |
---|---|
axpre-apti | ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ ¬ (𝐴 <ℝ 𝐵 ∨ 𝐵 <ℝ 𝐴)) → 𝐴 = 𝐵) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elreal 7727 | . . 3 ⊢ (𝐴 ∈ ℝ ↔ ∃𝑥 ∈ R 〈𝑥, 0R〉 = 𝐴) | |
2 | elreal 7727 | . . 3 ⊢ (𝐵 ∈ ℝ ↔ ∃𝑦 ∈ R 〈𝑦, 0R〉 = 𝐵) | |
3 | breq1 3964 | . . . . . 6 ⊢ (〈𝑥, 0R〉 = 𝐴 → (〈𝑥, 0R〉 <ℝ 〈𝑦, 0R〉 ↔ 𝐴 <ℝ 〈𝑦, 0R〉)) | |
4 | breq2 3965 | . . . . . 6 ⊢ (〈𝑥, 0R〉 = 𝐴 → (〈𝑦, 0R〉 <ℝ 〈𝑥, 0R〉 ↔ 〈𝑦, 0R〉 <ℝ 𝐴)) | |
5 | 3, 4 | orbi12d 783 | . . . . 5 ⊢ (〈𝑥, 0R〉 = 𝐴 → ((〈𝑥, 0R〉 <ℝ 〈𝑦, 0R〉 ∨ 〈𝑦, 0R〉 <ℝ 〈𝑥, 0R〉) ↔ (𝐴 <ℝ 〈𝑦, 0R〉 ∨ 〈𝑦, 0R〉 <ℝ 𝐴))) |
6 | 5 | notbid 657 | . . . 4 ⊢ (〈𝑥, 0R〉 = 𝐴 → (¬ (〈𝑥, 0R〉 <ℝ 〈𝑦, 0R〉 ∨ 〈𝑦, 0R〉 <ℝ 〈𝑥, 0R〉) ↔ ¬ (𝐴 <ℝ 〈𝑦, 0R〉 ∨ 〈𝑦, 0R〉 <ℝ 𝐴))) |
7 | eqeq1 2161 | . . . 4 ⊢ (〈𝑥, 0R〉 = 𝐴 → (〈𝑥, 0R〉 = 〈𝑦, 0R〉 ↔ 𝐴 = 〈𝑦, 0R〉)) | |
8 | 6, 7 | imbi12d 233 | . . 3 ⊢ (〈𝑥, 0R〉 = 𝐴 → ((¬ (〈𝑥, 0R〉 <ℝ 〈𝑦, 0R〉 ∨ 〈𝑦, 0R〉 <ℝ 〈𝑥, 0R〉) → 〈𝑥, 0R〉 = 〈𝑦, 0R〉) ↔ (¬ (𝐴 <ℝ 〈𝑦, 0R〉 ∨ 〈𝑦, 0R〉 <ℝ 𝐴) → 𝐴 = 〈𝑦, 0R〉))) |
9 | breq2 3965 | . . . . . 6 ⊢ (〈𝑦, 0R〉 = 𝐵 → (𝐴 <ℝ 〈𝑦, 0R〉 ↔ 𝐴 <ℝ 𝐵)) | |
10 | breq1 3964 | . . . . . 6 ⊢ (〈𝑦, 0R〉 = 𝐵 → (〈𝑦, 0R〉 <ℝ 𝐴 ↔ 𝐵 <ℝ 𝐴)) | |
11 | 9, 10 | orbi12d 783 | . . . . 5 ⊢ (〈𝑦, 0R〉 = 𝐵 → ((𝐴 <ℝ 〈𝑦, 0R〉 ∨ 〈𝑦, 0R〉 <ℝ 𝐴) ↔ (𝐴 <ℝ 𝐵 ∨ 𝐵 <ℝ 𝐴))) |
12 | 11 | notbid 657 | . . . 4 ⊢ (〈𝑦, 0R〉 = 𝐵 → (¬ (𝐴 <ℝ 〈𝑦, 0R〉 ∨ 〈𝑦, 0R〉 <ℝ 𝐴) ↔ ¬ (𝐴 <ℝ 𝐵 ∨ 𝐵 <ℝ 𝐴))) |
13 | eqeq2 2164 | . . . 4 ⊢ (〈𝑦, 0R〉 = 𝐵 → (𝐴 = 〈𝑦, 0R〉 ↔ 𝐴 = 𝐵)) | |
14 | 12, 13 | imbi12d 233 | . . 3 ⊢ (〈𝑦, 0R〉 = 𝐵 → ((¬ (𝐴 <ℝ 〈𝑦, 0R〉 ∨ 〈𝑦, 0R〉 <ℝ 𝐴) → 𝐴 = 〈𝑦, 0R〉) ↔ (¬ (𝐴 <ℝ 𝐵 ∨ 𝐵 <ℝ 𝐴) → 𝐴 = 𝐵))) |
15 | aptisr 7678 | . . . . 5 ⊢ ((𝑥 ∈ R ∧ 𝑦 ∈ R ∧ ¬ (𝑥 <R 𝑦 ∨ 𝑦 <R 𝑥)) → 𝑥 = 𝑦) | |
16 | 15 | 3expia 1184 | . . . 4 ⊢ ((𝑥 ∈ R ∧ 𝑦 ∈ R) → (¬ (𝑥 <R 𝑦 ∨ 𝑦 <R 𝑥) → 𝑥 = 𝑦)) |
17 | ltresr 7738 | . . . . . 6 ⊢ (〈𝑥, 0R〉 <ℝ 〈𝑦, 0R〉 ↔ 𝑥 <R 𝑦) | |
18 | ltresr 7738 | . . . . . 6 ⊢ (〈𝑦, 0R〉 <ℝ 〈𝑥, 0R〉 ↔ 𝑦 <R 𝑥) | |
19 | 17, 18 | orbi12i 754 | . . . . 5 ⊢ ((〈𝑥, 0R〉 <ℝ 〈𝑦, 0R〉 ∨ 〈𝑦, 0R〉 <ℝ 〈𝑥, 0R〉) ↔ (𝑥 <R 𝑦 ∨ 𝑦 <R 𝑥)) |
20 | 19 | notbii 658 | . . . 4 ⊢ (¬ (〈𝑥, 0R〉 <ℝ 〈𝑦, 0R〉 ∨ 〈𝑦, 0R〉 <ℝ 〈𝑥, 0R〉) ↔ ¬ (𝑥 <R 𝑦 ∨ 𝑦 <R 𝑥)) |
21 | vex 2712 | . . . . 5 ⊢ 𝑥 ∈ V | |
22 | 21 | eqresr 7735 | . . . 4 ⊢ (〈𝑥, 0R〉 = 〈𝑦, 0R〉 ↔ 𝑥 = 𝑦) |
23 | 16, 20, 22 | 3imtr4g 204 | . . 3 ⊢ ((𝑥 ∈ R ∧ 𝑦 ∈ R) → (¬ (〈𝑥, 0R〉 <ℝ 〈𝑦, 0R〉 ∨ 〈𝑦, 0R〉 <ℝ 〈𝑥, 0R〉) → 〈𝑥, 0R〉 = 〈𝑦, 0R〉)) |
24 | 1, 2, 8, 14, 23 | 2gencl 2742 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (¬ (𝐴 <ℝ 𝐵 ∨ 𝐵 <ℝ 𝐴) → 𝐴 = 𝐵)) |
25 | 24 | 3impia 1179 | 1 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ ¬ (𝐴 <ℝ 𝐵 ∨ 𝐵 <ℝ 𝐴)) → 𝐴 = 𝐵) |
Colors of variables: wff set class |
Syntax hints: ¬ wn 3 → wi 4 ∧ wa 103 ∨ wo 698 ∧ w3a 963 = wceq 1332 ∈ wcel 2125 〈cop 3559 class class class wbr 3961 Rcnr 7196 0Rc0r 7197 <R cltr 7202 ℝcr 7710 <ℝ cltrr 7715 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 604 ax-in2 605 ax-io 699 ax-5 1424 ax-7 1425 ax-gen 1426 ax-ie1 1470 ax-ie2 1471 ax-8 1481 ax-10 1482 ax-11 1483 ax-i12 1484 ax-bndl 1486 ax-4 1487 ax-17 1503 ax-i9 1507 ax-ial 1511 ax-i5r 1512 ax-13 2127 ax-14 2128 ax-ext 2136 ax-coll 4075 ax-sep 4078 ax-nul 4086 ax-pow 4130 ax-pr 4164 ax-un 4388 ax-setind 4490 ax-iinf 4541 |
This theorem depends on definitions: df-bi 116 df-dc 821 df-3or 964 df-3an 965 df-tru 1335 df-fal 1338 df-nf 1438 df-sb 1740 df-eu 2006 df-mo 2007 df-clab 2141 df-cleq 2147 df-clel 2150 df-nfc 2285 df-ne 2325 df-ral 2437 df-rex 2438 df-reu 2439 df-rab 2441 df-v 2711 df-sbc 2934 df-csb 3028 df-dif 3100 df-un 3102 df-in 3104 df-ss 3111 df-nul 3391 df-pw 3541 df-sn 3562 df-pr 3563 df-op 3565 df-uni 3769 df-int 3804 df-iun 3847 df-br 3962 df-opab 4022 df-mpt 4023 df-tr 4059 df-eprel 4244 df-id 4248 df-po 4251 df-iso 4252 df-iord 4321 df-on 4323 df-suc 4326 df-iom 4544 df-xp 4585 df-rel 4586 df-cnv 4587 df-co 4588 df-dm 4589 df-rn 4590 df-res 4591 df-ima 4592 df-iota 5128 df-fun 5165 df-fn 5166 df-f 5167 df-f1 5168 df-fo 5169 df-f1o 5170 df-fv 5171 df-ov 5817 df-oprab 5818 df-mpo 5819 df-1st 6078 df-2nd 6079 df-recs 6242 df-irdg 6307 df-1o 6353 df-2o 6354 df-oadd 6357 df-omul 6358 df-er 6469 df-ec 6471 df-qs 6475 df-ni 7203 df-pli 7204 df-mi 7205 df-lti 7206 df-plpq 7243 df-mpq 7244 df-enq 7246 df-nqqs 7247 df-plqqs 7248 df-mqqs 7249 df-1nqqs 7250 df-rq 7251 df-ltnqqs 7252 df-enq0 7323 df-nq0 7324 df-0nq0 7325 df-plq0 7326 df-mq0 7327 df-inp 7365 df-i1p 7366 df-iplp 7367 df-iltp 7369 df-enr 7625 df-nr 7626 df-ltr 7629 df-0r 7630 df-r 7721 df-lt 7724 |
This theorem is referenced by: (None) |
Copyright terms: Public domain | W3C validator |