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Mirrors > Home > ILE Home > Th. List > ennnfonelem0 | GIF version |
Description: Lemma for ennnfone 12358. Initial value. (Contributed by Jim Kingdon, 15-Jul-2023.) |
Ref | Expression |
---|---|
ennnfonelemh.dceq | ⊢ (𝜑 → ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 DECID 𝑥 = 𝑦) |
ennnfonelemh.f | ⊢ (𝜑 → 𝐹:ω–onto→𝐴) |
ennnfonelemh.ne | ⊢ (𝜑 → ∀𝑛 ∈ ω ∃𝑘 ∈ ω ∀𝑗 ∈ suc 𝑛(𝐹‘𝑘) ≠ (𝐹‘𝑗)) |
ennnfonelemh.g | ⊢ 𝐺 = (𝑥 ∈ (𝐴 ↑pm ω), 𝑦 ∈ ω ↦ if((𝐹‘𝑦) ∈ (𝐹 “ 𝑦), 𝑥, (𝑥 ∪ {〈dom 𝑥, (𝐹‘𝑦)〉}))) |
ennnfonelemh.n | ⊢ 𝑁 = frec((𝑥 ∈ ℤ ↦ (𝑥 + 1)), 0) |
ennnfonelemh.j | ⊢ 𝐽 = (𝑥 ∈ ℕ0 ↦ if(𝑥 = 0, ∅, (◡𝑁‘(𝑥 − 1)))) |
ennnfonelemh.h | ⊢ 𝐻 = seq0(𝐺, 𝐽) |
Ref | Expression |
---|---|
ennnfonelem0 | ⊢ (𝜑 → (𝐻‘0) = ∅) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ennnfonelemh.h | . . . 4 ⊢ 𝐻 = seq0(𝐺, 𝐽) | |
2 | 1 | fveq1i 5487 | . . 3 ⊢ (𝐻‘0) = (seq0(𝐺, 𝐽)‘0) |
3 | ennnfonelemh.dceq | . . . . 5 ⊢ (𝜑 → ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 DECID 𝑥 = 𝑦) | |
4 | ennnfonelemh.f | . . . . 5 ⊢ (𝜑 → 𝐹:ω–onto→𝐴) | |
5 | ennnfonelemh.ne | . . . . 5 ⊢ (𝜑 → ∀𝑛 ∈ ω ∃𝑘 ∈ ω ∀𝑗 ∈ suc 𝑛(𝐹‘𝑘) ≠ (𝐹‘𝑗)) | |
6 | ennnfonelemh.g | . . . . 5 ⊢ 𝐺 = (𝑥 ∈ (𝐴 ↑pm ω), 𝑦 ∈ ω ↦ if((𝐹‘𝑦) ∈ (𝐹 “ 𝑦), 𝑥, (𝑥 ∪ {〈dom 𝑥, (𝐹‘𝑦)〉}))) | |
7 | ennnfonelemh.n | . . . . 5 ⊢ 𝑁 = frec((𝑥 ∈ ℤ ↦ (𝑥 + 1)), 0) | |
8 | ennnfonelemh.j | . . . . 5 ⊢ 𝐽 = (𝑥 ∈ ℕ0 ↦ if(𝑥 = 0, ∅, (◡𝑁‘(𝑥 − 1)))) | |
9 | 3, 4, 5, 6, 7, 8, 1 | ennnfonelemj0 12334 | . . . 4 ⊢ (𝜑 → (𝐽‘0) ∈ {𝑔 ∈ (𝐴 ↑pm ω) ∣ dom 𝑔 ∈ ω}) |
10 | 3, 4, 5, 6, 7, 8, 1 | ennnfonelemg 12336 | . . . 4 ⊢ ((𝜑 ∧ (𝑓 ∈ {𝑔 ∈ (𝐴 ↑pm ω) ∣ dom 𝑔 ∈ ω} ∧ 𝑗 ∈ ω)) → (𝑓𝐺𝑗) ∈ {𝑔 ∈ (𝐴 ↑pm ω) ∣ dom 𝑔 ∈ ω}) |
11 | 0zd 9203 | . . . 4 ⊢ (𝜑 → 0 ∈ ℤ) | |
12 | 3, 4, 5, 6, 7, 8, 1 | ennnfonelemjn 12335 | . . . 4 ⊢ ((𝜑 ∧ 𝑓 ∈ (ℤ≥‘(0 + 1))) → (𝐽‘𝑓) ∈ ω) |
13 | 9, 10, 11, 12 | seq1cd 10400 | . . 3 ⊢ (𝜑 → (seq0(𝐺, 𝐽)‘0) = (𝐽‘0)) |
14 | 2, 13 | syl5eq 2211 | . 2 ⊢ (𝜑 → (𝐻‘0) = (𝐽‘0)) |
15 | 0nn0 9129 | . . . 4 ⊢ 0 ∈ ℕ0 | |
16 | eqid 2165 | . . . . . 6 ⊢ 0 = 0 | |
17 | 16 | iftruei 3526 | . . . . 5 ⊢ if(0 = 0, ∅, (◡𝑁‘(0 − 1))) = ∅ |
18 | 0ex 4109 | . . . . 5 ⊢ ∅ ∈ V | |
19 | 17, 18 | eqeltri 2239 | . . . 4 ⊢ if(0 = 0, ∅, (◡𝑁‘(0 − 1))) ∈ V |
20 | eqeq1 2172 | . . . . . 6 ⊢ (𝑥 = 0 → (𝑥 = 0 ↔ 0 = 0)) | |
21 | fvoveq1 5865 | . . . . . 6 ⊢ (𝑥 = 0 → (◡𝑁‘(𝑥 − 1)) = (◡𝑁‘(0 − 1))) | |
22 | 20, 21 | ifbieq2d 3544 | . . . . 5 ⊢ (𝑥 = 0 → if(𝑥 = 0, ∅, (◡𝑁‘(𝑥 − 1))) = if(0 = 0, ∅, (◡𝑁‘(0 − 1)))) |
23 | 22, 8 | fvmptg 5562 | . . . 4 ⊢ ((0 ∈ ℕ0 ∧ if(0 = 0, ∅, (◡𝑁‘(0 − 1))) ∈ V) → (𝐽‘0) = if(0 = 0, ∅, (◡𝑁‘(0 − 1)))) |
24 | 15, 19, 23 | mp2an 423 | . . 3 ⊢ (𝐽‘0) = if(0 = 0, ∅, (◡𝑁‘(0 − 1))) |
25 | 24, 17 | eqtri 2186 | . 2 ⊢ (𝐽‘0) = ∅ |
26 | 14, 25 | eqtrdi 2215 | 1 ⊢ (𝜑 → (𝐻‘0) = ∅) |
Colors of variables: wff set class |
Syntax hints: → wi 4 DECID wdc 824 = wceq 1343 ∈ wcel 2136 ≠ wne 2336 ∀wral 2444 ∃wrex 2445 {crab 2448 Vcvv 2726 ∪ cun 3114 ∅c0 3409 ifcif 3520 {csn 3576 〈cop 3579 ↦ cmpt 4043 suc csuc 4343 ωcom 4567 ◡ccnv 4603 dom cdm 4604 “ cima 4607 –onto→wfo 5186 ‘cfv 5188 (class class class)co 5842 ∈ cmpo 5844 freccfrec 6358 ↑pm cpm 6615 0cc0 7753 1c1 7754 + caddc 7756 − cmin 8069 ℕ0cn0 9114 ℤcz 9191 seqcseq 10380 |
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 1435 ax-7 1436 ax-gen 1437 ax-ie1 1481 ax-ie2 1482 ax-8 1492 ax-10 1493 ax-11 1494 ax-i12 1495 ax-bndl 1497 ax-4 1498 ax-17 1514 ax-i9 1518 ax-ial 1522 ax-i5r 1523 ax-13 2138 ax-14 2139 ax-ext 2147 ax-coll 4097 ax-sep 4100 ax-nul 4108 ax-pow 4153 ax-pr 4187 ax-un 4411 ax-setind 4514 ax-iinf 4565 ax-cnex 7844 ax-resscn 7845 ax-1cn 7846 ax-1re 7847 ax-icn 7848 ax-addcl 7849 ax-addrcl 7850 ax-mulcl 7851 ax-addcom 7853 ax-addass 7855 ax-distr 7857 ax-i2m1 7858 ax-0lt1 7859 ax-0id 7861 ax-rnegex 7862 ax-cnre 7864 ax-pre-ltirr 7865 ax-pre-ltwlin 7866 ax-pre-lttrn 7867 ax-pre-ltadd 7869 |
This theorem depends on definitions: df-bi 116 df-dc 825 df-3or 969 df-3an 970 df-tru 1346 df-fal 1349 df-nf 1449 df-sb 1751 df-eu 2017 df-mo 2018 df-clab 2152 df-cleq 2158 df-clel 2161 df-nfc 2297 df-ne 2337 df-nel 2432 df-ral 2449 df-rex 2450 df-reu 2451 df-rab 2453 df-v 2728 df-sbc 2952 df-csb 3046 df-dif 3118 df-un 3120 df-in 3122 df-ss 3129 df-nul 3410 df-if 3521 df-pw 3561 df-sn 3582 df-pr 3583 df-op 3585 df-uni 3790 df-int 3825 df-iun 3868 df-br 3983 df-opab 4044 df-mpt 4045 df-tr 4081 df-id 4271 df-iord 4344 df-on 4346 df-ilim 4347 df-suc 4349 df-iom 4568 df-xp 4610 df-rel 4611 df-cnv 4612 df-co 4613 df-dm 4614 df-rn 4615 df-res 4616 df-ima 4617 df-iota 5153 df-fun 5190 df-fn 5191 df-f 5192 df-f1 5193 df-fo 5194 df-f1o 5195 df-fv 5196 df-riota 5798 df-ov 5845 df-oprab 5846 df-mpo 5847 df-1st 6108 df-2nd 6109 df-recs 6273 df-frec 6359 df-pm 6617 df-pnf 7935 df-mnf 7936 df-xr 7937 df-ltxr 7938 df-le 7939 df-sub 8071 df-neg 8072 df-inn 8858 df-n0 9115 df-z 9192 df-uz 9467 df-seqfrec 10381 |
This theorem is referenced by: ennnfonelem1 12340 ennnfonelemkh 12345 ennnfonelemhf1o 12346 |
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