Mathbox for Alexander van der Vekens |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > prproropreud | Structured version Visualization version GIF version |
Description: There is exactly one ordered ordered pair fulfilling a wff iff there is exactly one proper pair fulfilling an equivalent wff. (Contributed by AV, 20-Mar-2023.) |
Ref | Expression |
---|---|
prproropreud.o | ⊢ 𝑂 = (𝑅 ∩ (𝑉 × 𝑉)) |
prproropreud.p | ⊢ 𝑃 = {𝑝 ∈ 𝒫 𝑉 ∣ (♯‘𝑝) = 2} |
prproropreud.b | ⊢ (𝜑 → 𝑅 Or 𝑉) |
prproropreud.x | ⊢ (𝑥 = 〈inf(𝑦, 𝑉, 𝑅), sup(𝑦, 𝑉, 𝑅)〉 → (𝜓 ↔ 𝜒)) |
prproropreud.z | ⊢ (𝑥 = 𝑧 → (𝜓 ↔ 𝜃)) |
Ref | Expression |
---|---|
prproropreud | ⊢ (𝜑 → (∃!𝑥 ∈ 𝑂 𝜓 ↔ ∃!𝑦 ∈ 𝑃 𝜒)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | prproropreud.b | . . . 4 ⊢ (𝜑 → 𝑅 Or 𝑉) | |
2 | prproropreud.o | . . . . 5 ⊢ 𝑂 = (𝑅 ∩ (𝑉 × 𝑉)) | |
3 | prproropreud.p | . . . . 5 ⊢ 𝑃 = {𝑝 ∈ 𝒫 𝑉 ∣ (♯‘𝑝) = 2} | |
4 | eqid 2759 | . . . . 5 ⊢ (𝑝 ∈ 𝑃 ↦ 〈inf(𝑝, 𝑉, 𝑅), sup(𝑝, 𝑉, 𝑅)〉) = (𝑝 ∈ 𝑃 ↦ 〈inf(𝑝, 𝑉, 𝑅), sup(𝑝, 𝑉, 𝑅)〉) | |
5 | 2, 3, 4 | prproropf1o 44385 | . . . 4 ⊢ (𝑅 Or 𝑉 → (𝑝 ∈ 𝑃 ↦ 〈inf(𝑝, 𝑉, 𝑅), sup(𝑝, 𝑉, 𝑅)〉):𝑃–1-1-onto→𝑂) |
6 | 1, 5 | syl 17 | . . 3 ⊢ (𝜑 → (𝑝 ∈ 𝑃 ↦ 〈inf(𝑝, 𝑉, 𝑅), sup(𝑝, 𝑉, 𝑅)〉):𝑃–1-1-onto→𝑂) |
7 | sbceq1a 3708 | . . . 4 ⊢ (𝑥 = ((𝑝 ∈ 𝑃 ↦ 〈inf(𝑝, 𝑉, 𝑅), sup(𝑝, 𝑉, 𝑅)〉)‘𝑦) → (𝜓 ↔ [((𝑝 ∈ 𝑃 ↦ 〈inf(𝑝, 𝑉, 𝑅), sup(𝑝, 𝑉, 𝑅)〉)‘𝑦) / 𝑥]𝜓)) | |
8 | 7 | adantl 486 | . . 3 ⊢ ((𝜑 ∧ 𝑥 = ((𝑝 ∈ 𝑃 ↦ 〈inf(𝑝, 𝑉, 𝑅), sup(𝑝, 𝑉, 𝑅)〉)‘𝑦)) → (𝜓 ↔ [((𝑝 ∈ 𝑃 ↦ 〈inf(𝑝, 𝑉, 𝑅), sup(𝑝, 𝑉, 𝑅)〉)‘𝑦) / 𝑥]𝜓)) |
9 | prproropreud.z | . . 3 ⊢ (𝑥 = 𝑧 → (𝜓 ↔ 𝜃)) | |
10 | nfsbc1v 3717 | . . 3 ⊢ Ⅎ𝑥[((𝑝 ∈ 𝑃 ↦ 〈inf(𝑝, 𝑉, 𝑅), sup(𝑝, 𝑉, 𝑅)〉)‘𝑦) / 𝑥]𝜓 | |
11 | 6, 8, 9, 10 | reuf1odnf 44024 | . 2 ⊢ (𝜑 → (∃!𝑥 ∈ 𝑂 𝜓 ↔ ∃!𝑦 ∈ 𝑃 [((𝑝 ∈ 𝑃 ↦ 〈inf(𝑝, 𝑉, 𝑅), sup(𝑝, 𝑉, 𝑅)〉)‘𝑦) / 𝑥]𝜓)) |
12 | eqidd 2760 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝑃) → (𝑝 ∈ 𝑃 ↦ 〈inf(𝑝, 𝑉, 𝑅), sup(𝑝, 𝑉, 𝑅)〉) = (𝑝 ∈ 𝑃 ↦ 〈inf(𝑝, 𝑉, 𝑅), sup(𝑝, 𝑉, 𝑅)〉)) | |
13 | infeq1 8966 | . . . . . . . 8 ⊢ (𝑝 = 𝑦 → inf(𝑝, 𝑉, 𝑅) = inf(𝑦, 𝑉, 𝑅)) | |
14 | supeq1 8935 | . . . . . . . 8 ⊢ (𝑝 = 𝑦 → sup(𝑝, 𝑉, 𝑅) = sup(𝑦, 𝑉, 𝑅)) | |
15 | 13, 14 | opeq12d 4772 | . . . . . . 7 ⊢ (𝑝 = 𝑦 → 〈inf(𝑝, 𝑉, 𝑅), sup(𝑝, 𝑉, 𝑅)〉 = 〈inf(𝑦, 𝑉, 𝑅), sup(𝑦, 𝑉, 𝑅)〉) |
16 | 15 | adantl 486 | . . . . . 6 ⊢ (((𝜑 ∧ 𝑦 ∈ 𝑃) ∧ 𝑝 = 𝑦) → 〈inf(𝑝, 𝑉, 𝑅), sup(𝑝, 𝑉, 𝑅)〉 = 〈inf(𝑦, 𝑉, 𝑅), sup(𝑦, 𝑉, 𝑅)〉) |
17 | simpr 489 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝑃) → 𝑦 ∈ 𝑃) | |
18 | opex 5325 | . . . . . . 7 ⊢ 〈inf(𝑦, 𝑉, 𝑅), sup(𝑦, 𝑉, 𝑅)〉 ∈ V | |
19 | 18 | a1i 11 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝑃) → 〈inf(𝑦, 𝑉, 𝑅), sup(𝑦, 𝑉, 𝑅)〉 ∈ V) |
20 | 12, 16, 17, 19 | fvmptd 6767 | . . . . 5 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝑃) → ((𝑝 ∈ 𝑃 ↦ 〈inf(𝑝, 𝑉, 𝑅), sup(𝑝, 𝑉, 𝑅)〉)‘𝑦) = 〈inf(𝑦, 𝑉, 𝑅), sup(𝑦, 𝑉, 𝑅)〉) |
21 | 20 | sbceq1d 3702 | . . . 4 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝑃) → ([((𝑝 ∈ 𝑃 ↦ 〈inf(𝑝, 𝑉, 𝑅), sup(𝑝, 𝑉, 𝑅)〉)‘𝑦) / 𝑥]𝜓 ↔ [〈inf(𝑦, 𝑉, 𝑅), sup(𝑦, 𝑉, 𝑅)〉 / 𝑥]𝜓)) |
22 | prproropreud.x | . . . . . 6 ⊢ (𝑥 = 〈inf(𝑦, 𝑉, 𝑅), sup(𝑦, 𝑉, 𝑅)〉 → (𝜓 ↔ 𝜒)) | |
23 | 22 | sbcieg 3736 | . . . . 5 ⊢ (〈inf(𝑦, 𝑉, 𝑅), sup(𝑦, 𝑉, 𝑅)〉 ∈ V → ([〈inf(𝑦, 𝑉, 𝑅), sup(𝑦, 𝑉, 𝑅)〉 / 𝑥]𝜓 ↔ 𝜒)) |
24 | 19, 23 | syl 17 | . . . 4 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝑃) → ([〈inf(𝑦, 𝑉, 𝑅), sup(𝑦, 𝑉, 𝑅)〉 / 𝑥]𝜓 ↔ 𝜒)) |
25 | 21, 24 | bitrd 282 | . . 3 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝑃) → ([((𝑝 ∈ 𝑃 ↦ 〈inf(𝑝, 𝑉, 𝑅), sup(𝑝, 𝑉, 𝑅)〉)‘𝑦) / 𝑥]𝜓 ↔ 𝜒)) |
26 | 25 | reubidva 3307 | . 2 ⊢ (𝜑 → (∃!𝑦 ∈ 𝑃 [((𝑝 ∈ 𝑃 ↦ 〈inf(𝑝, 𝑉, 𝑅), sup(𝑝, 𝑉, 𝑅)〉)‘𝑦) / 𝑥]𝜓 ↔ ∃!𝑦 ∈ 𝑃 𝜒)) |
27 | 11, 26 | bitrd 282 | 1 ⊢ (𝜑 → (∃!𝑥 ∈ 𝑂 𝜓 ↔ ∃!𝑦 ∈ 𝑃 𝜒)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 209 ∧ wa 400 = wceq 1539 ∈ wcel 2112 ∃!wreu 3073 {crab 3075 Vcvv 3410 [wsbc 3697 ∩ cin 3858 𝒫 cpw 4495 〈cop 4529 ↦ cmpt 5113 Or wor 5443 × cxp 5523 –1-1-onto→wf1o 6335 ‘cfv 6336 supcsup 8930 infcinf 8931 2c2 11722 ♯chash 13733 |
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 1912 ax-6 1971 ax-7 2016 ax-8 2114 ax-9 2122 ax-10 2143 ax-11 2159 ax-12 2176 ax-ext 2730 ax-sep 5170 ax-nul 5177 ax-pow 5235 ax-pr 5299 ax-un 7460 ax-cnex 10624 ax-resscn 10625 ax-1cn 10626 ax-icn 10627 ax-addcl 10628 ax-addrcl 10629 ax-mulcl 10630 ax-mulrcl 10631 ax-mulcom 10632 ax-addass 10633 ax-mulass 10634 ax-distr 10635 ax-i2m1 10636 ax-1ne0 10637 ax-1rid 10638 ax-rnegex 10639 ax-rrecex 10640 ax-cnre 10641 ax-pre-lttri 10642 ax-pre-lttrn 10643 ax-pre-ltadd 10644 ax-pre-mulgt0 10645 |
This theorem depends on definitions: df-bi 210 df-an 401 df-or 846 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2071 df-mo 2558 df-eu 2589 df-clab 2737 df-cleq 2751 df-clel 2831 df-nfc 2902 df-ne 2953 df-nel 3057 df-ral 3076 df-rex 3077 df-reu 3078 df-rmo 3079 df-rab 3080 df-v 3412 df-sbc 3698 df-csb 3807 df-dif 3862 df-un 3864 df-in 3866 df-ss 3876 df-pss 3878 df-nul 4227 df-if 4422 df-pw 4497 df-sn 4524 df-pr 4526 df-tp 4528 df-op 4530 df-uni 4800 df-int 4840 df-iun 4886 df-br 5034 df-opab 5096 df-mpt 5114 df-tr 5140 df-id 5431 df-eprel 5436 df-po 5444 df-so 5445 df-fr 5484 df-we 5486 df-xp 5531 df-rel 5532 df-cnv 5533 df-co 5534 df-dm 5535 df-rn 5536 df-res 5537 df-ima 5538 df-pred 6127 df-ord 6173 df-on 6174 df-lim 6175 df-suc 6176 df-iota 6295 df-fun 6338 df-fn 6339 df-f 6340 df-f1 6341 df-fo 6342 df-f1o 6343 df-fv 6344 df-riota 7109 df-ov 7154 df-oprab 7155 df-mpo 7156 df-om 7581 df-1st 7694 df-2nd 7695 df-wrecs 7958 df-recs 8019 df-rdg 8057 df-1o 8113 df-2o 8114 df-oadd 8117 df-er 8300 df-en 8529 df-dom 8530 df-sdom 8531 df-fin 8532 df-sup 8932 df-inf 8933 df-dju 9356 df-card 9394 df-pnf 10708 df-mnf 10709 df-xr 10710 df-ltxr 10711 df-le 10712 df-sub 10903 df-neg 10904 df-nn 11668 df-2 11730 df-n0 11928 df-z 12014 df-uz 12276 df-fz 12933 df-hash 13734 |
This theorem is referenced by: (None) |
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