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Mirrors > Home > ILE Home > Th. List > ctiunctal | GIF version |
Description: Variation of ctiunct 12120 which allows 𝑥 to be present in 𝜑. (Contributed by Jim Kingdon, 5-May-2024.) |
Ref | Expression |
---|---|
ctiunctal.a | ⊢ (𝜑 → 𝐹:ω–onto→(𝐴 ⊔ 1o)) |
ctiunctal.b | ⊢ (𝜑 → ∀𝑥 ∈ 𝐴 𝐺:ω–onto→(𝐵 ⊔ 1o)) |
Ref | Expression |
---|---|
ctiunctal | ⊢ (𝜑 → ∃ℎ ℎ:ω–onto→(∪ 𝑥 ∈ 𝐴 𝐵 ⊔ 1o)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ctiunctal.a | . . 3 ⊢ (𝜑 → 𝐹:ω–onto→(𝐴 ⊔ 1o)) | |
2 | ctiunctal.b | . . . . 5 ⊢ (𝜑 → ∀𝑥 ∈ 𝐴 𝐺:ω–onto→(𝐵 ⊔ 1o)) | |
3 | nfv 1505 | . . . . . 6 ⊢ Ⅎ𝑦 𝐺:ω–onto→(𝐵 ⊔ 1o) | |
4 | nfcsb1v 3060 | . . . . . . 7 ⊢ Ⅎ𝑥⦋𝑦 / 𝑥⦌𝐺 | |
5 | nfcv 2296 | . . . . . . 7 ⊢ Ⅎ𝑥ω | |
6 | nfcsb1v 3060 | . . . . . . . 8 ⊢ Ⅎ𝑥⦋𝑦 / 𝑥⦌𝐵 | |
7 | nfcv 2296 | . . . . . . . 8 ⊢ Ⅎ𝑥1o | |
8 | 6, 7 | nfdju 6972 | . . . . . . 7 ⊢ Ⅎ𝑥(⦋𝑦 / 𝑥⦌𝐵 ⊔ 1o) |
9 | 4, 5, 8 | nffo 5384 | . . . . . 6 ⊢ Ⅎ𝑥⦋𝑦 / 𝑥⦌𝐺:ω–onto→(⦋𝑦 / 𝑥⦌𝐵 ⊔ 1o) |
10 | csbeq1a 3036 | . . . . . . 7 ⊢ (𝑥 = 𝑦 → 𝐺 = ⦋𝑦 / 𝑥⦌𝐺) | |
11 | eqidd 2155 | . . . . . . 7 ⊢ (𝑥 = 𝑦 → ω = ω) | |
12 | csbeq1a 3036 | . . . . . . . 8 ⊢ (𝑥 = 𝑦 → 𝐵 = ⦋𝑦 / 𝑥⦌𝐵) | |
13 | djueq1 6970 | . . . . . . . 8 ⊢ (𝐵 = ⦋𝑦 / 𝑥⦌𝐵 → (𝐵 ⊔ 1o) = (⦋𝑦 / 𝑥⦌𝐵 ⊔ 1o)) | |
14 | 12, 13 | syl 14 | . . . . . . 7 ⊢ (𝑥 = 𝑦 → (𝐵 ⊔ 1o) = (⦋𝑦 / 𝑥⦌𝐵 ⊔ 1o)) |
15 | 10, 11, 14 | foeq123d 5401 | . . . . . 6 ⊢ (𝑥 = 𝑦 → (𝐺:ω–onto→(𝐵 ⊔ 1o) ↔ ⦋𝑦 / 𝑥⦌𝐺:ω–onto→(⦋𝑦 / 𝑥⦌𝐵 ⊔ 1o))) |
16 | 3, 9, 15 | cbvral 2673 | . . . . 5 ⊢ (∀𝑥 ∈ 𝐴 𝐺:ω–onto→(𝐵 ⊔ 1o) ↔ ∀𝑦 ∈ 𝐴 ⦋𝑦 / 𝑥⦌𝐺:ω–onto→(⦋𝑦 / 𝑥⦌𝐵 ⊔ 1o)) |
17 | 2, 16 | sylib 121 | . . . 4 ⊢ (𝜑 → ∀𝑦 ∈ 𝐴 ⦋𝑦 / 𝑥⦌𝐺:ω–onto→(⦋𝑦 / 𝑥⦌𝐵 ⊔ 1o)) |
18 | 17 | r19.21bi 2542 | . . 3 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝐴) → ⦋𝑦 / 𝑥⦌𝐺:ω–onto→(⦋𝑦 / 𝑥⦌𝐵 ⊔ 1o)) |
19 | 1, 18 | ctiunct 12120 | . 2 ⊢ (𝜑 → ∃ℎ ℎ:ω–onto→(∪ 𝑦 ∈ 𝐴 ⦋𝑦 / 𝑥⦌𝐵 ⊔ 1o)) |
20 | nfcv 2296 | . . . . 5 ⊢ Ⅎ𝑦𝐵 | |
21 | 20, 6, 12 | cbviun 3882 | . . . 4 ⊢ ∪ 𝑥 ∈ 𝐴 𝐵 = ∪ 𝑦 ∈ 𝐴 ⦋𝑦 / 𝑥⦌𝐵 |
22 | djueq1 6970 | . . . 4 ⊢ (∪ 𝑥 ∈ 𝐴 𝐵 = ∪ 𝑦 ∈ 𝐴 ⦋𝑦 / 𝑥⦌𝐵 → (∪ 𝑥 ∈ 𝐴 𝐵 ⊔ 1o) = (∪ 𝑦 ∈ 𝐴 ⦋𝑦 / 𝑥⦌𝐵 ⊔ 1o)) | |
23 | foeq3 5383 | . . . 4 ⊢ ((∪ 𝑥 ∈ 𝐴 𝐵 ⊔ 1o) = (∪ 𝑦 ∈ 𝐴 ⦋𝑦 / 𝑥⦌𝐵 ⊔ 1o) → (ℎ:ω–onto→(∪ 𝑥 ∈ 𝐴 𝐵 ⊔ 1o) ↔ ℎ:ω–onto→(∪ 𝑦 ∈ 𝐴 ⦋𝑦 / 𝑥⦌𝐵 ⊔ 1o))) | |
24 | 21, 22, 23 | mp2b 8 | . . 3 ⊢ (ℎ:ω–onto→(∪ 𝑥 ∈ 𝐴 𝐵 ⊔ 1o) ↔ ℎ:ω–onto→(∪ 𝑦 ∈ 𝐴 ⦋𝑦 / 𝑥⦌𝐵 ⊔ 1o)) |
25 | 24 | exbii 1582 | . 2 ⊢ (∃ℎ ℎ:ω–onto→(∪ 𝑥 ∈ 𝐴 𝐵 ⊔ 1o) ↔ ∃ℎ ℎ:ω–onto→(∪ 𝑦 ∈ 𝐴 ⦋𝑦 / 𝑥⦌𝐵 ⊔ 1o)) |
26 | 19, 25 | sylibr 133 | 1 ⊢ (𝜑 → ∃ℎ ℎ:ω–onto→(∪ 𝑥 ∈ 𝐴 𝐵 ⊔ 1o)) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ↔ wb 104 = wceq 1332 ∃wex 1469 ∀wral 2432 ⦋csb 3027 ∪ ciun 3845 ωcom 4543 –onto→wfo 5161 1oc1o 6346 ⊔ cdju 6967 |
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 ax-cnex 7802 ax-resscn 7803 ax-1cn 7804 ax-1re 7805 ax-icn 7806 ax-addcl 7807 ax-addrcl 7808 ax-mulcl 7809 ax-mulrcl 7810 ax-addcom 7811 ax-mulcom 7812 ax-addass 7813 ax-mulass 7814 ax-distr 7815 ax-i2m1 7816 ax-0lt1 7817 ax-1rid 7818 ax-0id 7819 ax-rnegex 7820 ax-precex 7821 ax-cnre 7822 ax-pre-ltirr 7823 ax-pre-ltwlin 7824 ax-pre-lttrn 7825 ax-pre-apti 7826 ax-pre-ltadd 7827 ax-pre-mulgt0 7828 ax-pre-mulext 7829 ax-arch 7830 |
This theorem depends on definitions: df-bi 116 df-dc 821 df-3or 964 df-3an 965 df-tru 1335 df-fal 1338 df-xor 1355 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-nel 2420 df-ral 2437 df-rex 2438 df-reu 2439 df-rmo 2440 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-if 3502 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-id 4248 df-po 4251 df-iso 4252 df-iord 4321 df-on 4323 df-ilim 4324 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-riota 5770 df-ov 5817 df-oprab 5818 df-mpo 5819 df-1st 6078 df-2nd 6079 df-recs 6242 df-frec 6328 df-1o 6353 df-er 6469 df-en 6675 df-dju 6968 df-inl 6977 df-inr 6978 df-case 7014 df-pnf 7893 df-mnf 7894 df-xr 7895 df-ltxr 7896 df-le 7897 df-sub 8027 df-neg 8028 df-reap 8429 df-ap 8436 df-div 8525 df-inn 8813 df-2 8871 df-n0 9070 df-z 9147 df-uz 9419 df-q 9507 df-rp 9539 df-fz 9891 df-fl 10147 df-mod 10200 df-seqfrec 10323 df-exp 10397 df-dvds 11661 |
This theorem is referenced by: omiunct 12124 |
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