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Mirrors > Home > ILE Home > Th. List > nninfdclemf | GIF version |
Description: Lemma for nninfdc 12504. A function from the natural numbers into 𝐴. (Contributed by Jim Kingdon, 23-Sep-2024.) |
Ref | Expression |
---|---|
nninfdclemf.a | ⊢ (𝜑 → 𝐴 ⊆ ℕ) |
nninfdclemf.dc | ⊢ (𝜑 → ∀𝑥 ∈ ℕ DECID 𝑥 ∈ 𝐴) |
nninfdclemf.nb | ⊢ (𝜑 → ∀𝑚 ∈ ℕ ∃𝑛 ∈ 𝐴 𝑚 < 𝑛) |
nninfdclemf.j | ⊢ (𝜑 → (𝐽 ∈ 𝐴 ∧ 1 < 𝐽)) |
nninfdclemf.f | ⊢ 𝐹 = seq1((𝑦 ∈ ℕ, 𝑧 ∈ ℕ ↦ inf((𝐴 ∩ (ℤ≥‘(𝑦 + 1))), ℝ, < )), (𝑖 ∈ ℕ ↦ 𝐽)) |
Ref | Expression |
---|---|
nninfdclemf | ⊢ (𝜑 → 𝐹:ℕ⟶𝐴) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nnuz 9593 | . . 3 ⊢ ℕ = (ℤ≥‘1) | |
2 | 1zzd 9310 | . . 3 ⊢ (𝜑 → 1 ∈ ℤ) | |
3 | eqid 2189 | . . . . 5 ⊢ (𝑖 ∈ ℕ ↦ 𝐽) = (𝑖 ∈ ℕ ↦ 𝐽) | |
4 | eqidd 2190 | . . . . 5 ⊢ (𝑖 = 𝑝 → 𝐽 = 𝐽) | |
5 | simpr 110 | . . . . 5 ⊢ ((𝜑 ∧ 𝑝 ∈ ℕ) → 𝑝 ∈ ℕ) | |
6 | nninfdclemf.j | . . . . . . 7 ⊢ (𝜑 → (𝐽 ∈ 𝐴 ∧ 1 < 𝐽)) | |
7 | 6 | simpld 112 | . . . . . 6 ⊢ (𝜑 → 𝐽 ∈ 𝐴) |
8 | 7 | adantr 276 | . . . . 5 ⊢ ((𝜑 ∧ 𝑝 ∈ ℕ) → 𝐽 ∈ 𝐴) |
9 | 3, 4, 5, 8 | fvmptd3 5630 | . . . 4 ⊢ ((𝜑 ∧ 𝑝 ∈ ℕ) → ((𝑖 ∈ ℕ ↦ 𝐽)‘𝑝) = 𝐽) |
10 | 9, 8 | eqeltrd 2266 | . . 3 ⊢ ((𝜑 ∧ 𝑝 ∈ ℕ) → ((𝑖 ∈ ℕ ↦ 𝐽)‘𝑝) ∈ 𝐴) |
11 | nninfdclemf.a | . . . . 5 ⊢ (𝜑 → 𝐴 ⊆ ℕ) | |
12 | 11 | adantr 276 | . . . 4 ⊢ ((𝜑 ∧ (𝑝 ∈ 𝐴 ∧ 𝑞 ∈ 𝐴)) → 𝐴 ⊆ ℕ) |
13 | nninfdclemf.dc | . . . . 5 ⊢ (𝜑 → ∀𝑥 ∈ ℕ DECID 𝑥 ∈ 𝐴) | |
14 | 13 | adantr 276 | . . . 4 ⊢ ((𝜑 ∧ (𝑝 ∈ 𝐴 ∧ 𝑞 ∈ 𝐴)) → ∀𝑥 ∈ ℕ DECID 𝑥 ∈ 𝐴) |
15 | nninfdclemf.nb | . . . . 5 ⊢ (𝜑 → ∀𝑚 ∈ ℕ ∃𝑛 ∈ 𝐴 𝑚 < 𝑛) | |
16 | 15 | adantr 276 | . . . 4 ⊢ ((𝜑 ∧ (𝑝 ∈ 𝐴 ∧ 𝑞 ∈ 𝐴)) → ∀𝑚 ∈ ℕ ∃𝑛 ∈ 𝐴 𝑚 < 𝑛) |
17 | simprl 529 | . . . 4 ⊢ ((𝜑 ∧ (𝑝 ∈ 𝐴 ∧ 𝑞 ∈ 𝐴)) → 𝑝 ∈ 𝐴) | |
18 | simprr 531 | . . . 4 ⊢ ((𝜑 ∧ (𝑝 ∈ 𝐴 ∧ 𝑞 ∈ 𝐴)) → 𝑞 ∈ 𝐴) | |
19 | 12, 14, 16, 17, 18 | nninfdclemcl 12499 | . . 3 ⊢ ((𝜑 ∧ (𝑝 ∈ 𝐴 ∧ 𝑞 ∈ 𝐴)) → (𝑝(𝑦 ∈ ℕ, 𝑧 ∈ ℕ ↦ inf((𝐴 ∩ (ℤ≥‘(𝑦 + 1))), ℝ, < ))𝑞) ∈ 𝐴) |
20 | 1, 2, 10, 19 | seqf 10492 | . 2 ⊢ (𝜑 → seq1((𝑦 ∈ ℕ, 𝑧 ∈ ℕ ↦ inf((𝐴 ∩ (ℤ≥‘(𝑦 + 1))), ℝ, < )), (𝑖 ∈ ℕ ↦ 𝐽)):ℕ⟶𝐴) |
21 | nninfdclemf.f | . . 3 ⊢ 𝐹 = seq1((𝑦 ∈ ℕ, 𝑧 ∈ ℕ ↦ inf((𝐴 ∩ (ℤ≥‘(𝑦 + 1))), ℝ, < )), (𝑖 ∈ ℕ ↦ 𝐽)) | |
22 | 21 | feq1i 5377 | . 2 ⊢ (𝐹:ℕ⟶𝐴 ↔ seq1((𝑦 ∈ ℕ, 𝑧 ∈ ℕ ↦ inf((𝐴 ∩ (ℤ≥‘(𝑦 + 1))), ℝ, < )), (𝑖 ∈ ℕ ↦ 𝐽)):ℕ⟶𝐴) |
23 | 20, 22 | sylibr 134 | 1 ⊢ (𝜑 → 𝐹:ℕ⟶𝐴) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∧ wa 104 DECID wdc 835 = wceq 1364 ∈ wcel 2160 ∀wral 2468 ∃wrex 2469 ∩ cin 3143 ⊆ wss 3144 class class class wbr 4018 ↦ cmpt 4079 ⟶wf 5231 ‘cfv 5235 (class class class)co 5896 ∈ cmpo 5898 infcinf 7012 ℝcr 7840 1c1 7842 + caddc 7844 < clt 8022 ℕcn 8949 ℤ≥cuz 9558 seqcseq 10476 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 615 ax-in2 616 ax-io 710 ax-5 1458 ax-7 1459 ax-gen 1460 ax-ie1 1504 ax-ie2 1505 ax-8 1515 ax-10 1516 ax-11 1517 ax-i12 1518 ax-bndl 1520 ax-4 1521 ax-17 1537 ax-i9 1541 ax-ial 1545 ax-i5r 1546 ax-13 2162 ax-14 2163 ax-ext 2171 ax-coll 4133 ax-sep 4136 ax-nul 4144 ax-pow 4192 ax-pr 4227 ax-un 4451 ax-setind 4554 ax-iinf 4605 ax-cnex 7932 ax-resscn 7933 ax-1cn 7934 ax-1re 7935 ax-icn 7936 ax-addcl 7937 ax-addrcl 7938 ax-mulcl 7939 ax-addcom 7941 ax-addass 7943 ax-distr 7945 ax-i2m1 7946 ax-0lt1 7947 ax-0id 7949 ax-rnegex 7950 ax-cnre 7952 ax-pre-ltirr 7953 ax-pre-ltwlin 7954 ax-pre-lttrn 7955 ax-pre-apti 7956 ax-pre-ltadd 7957 |
This theorem depends on definitions: df-bi 117 df-dc 836 df-3or 981 df-3an 982 df-tru 1367 df-fal 1370 df-nf 1472 df-sb 1774 df-eu 2041 df-mo 2042 df-clab 2176 df-cleq 2182 df-clel 2185 df-nfc 2321 df-ne 2361 df-nel 2456 df-ral 2473 df-rex 2474 df-reu 2475 df-rmo 2476 df-rab 2477 df-v 2754 df-sbc 2978 df-csb 3073 df-dif 3146 df-un 3148 df-in 3150 df-ss 3157 df-nul 3438 df-pw 3592 df-sn 3613 df-pr 3614 df-op 3616 df-uni 3825 df-int 3860 df-iun 3903 df-br 4019 df-opab 4080 df-mpt 4081 df-tr 4117 df-id 4311 df-po 4314 df-iso 4315 df-iord 4384 df-on 4386 df-ilim 4387 df-suc 4389 df-iom 4608 df-xp 4650 df-rel 4651 df-cnv 4652 df-co 4653 df-dm 4654 df-rn 4655 df-res 4656 df-ima 4657 df-iota 5196 df-fun 5237 df-fn 5238 df-f 5239 df-f1 5240 df-fo 5241 df-f1o 5242 df-fv 5243 df-isom 5244 df-riota 5852 df-ov 5899 df-oprab 5900 df-mpo 5901 df-1st 6165 df-2nd 6166 df-recs 6330 df-frec 6416 df-sup 7013 df-inf 7014 df-pnf 8024 df-mnf 8025 df-xr 8026 df-ltxr 8027 df-le 8028 df-sub 8160 df-neg 8161 df-inn 8950 df-n0 9207 df-z 9284 df-uz 9559 df-fz 10039 df-fzo 10173 df-seqfrec 10477 |
This theorem is referenced by: nninfdclemp1 12501 nninfdclemlt 12502 nninfdclemf1 12503 |
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