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| Mirrors > Home > ILE Home > Th. List > nninfdclemf | GIF version | ||
| Description: Lemma for nninfdc 12766. 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 9683 | . . 3 ⊢ ℕ = (ℤ≥‘1) | |
| 2 | 1zzd 9398 | . . 3 ⊢ (𝜑 → 1 ∈ ℤ) | |
| 3 | eqid 2204 | . . . . 5 ⊢ (𝑖 ∈ ℕ ↦ 𝐽) = (𝑖 ∈ ℕ ↦ 𝐽) | |
| 4 | eqidd 2205 | . . . . 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 5672 | . . . 4 ⊢ ((𝜑 ∧ 𝑝 ∈ ℕ) → ((𝑖 ∈ ℕ ↦ 𝐽)‘𝑝) = 𝐽) |
| 10 | 9, 8 | eqeltrd 2281 | . . 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 12761 | . . 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 10607 | . 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 5417 | . 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 1372 ∈ wcel 2175 ∀wral 2483 ∃wrex 2484 ∩ cin 3164 ⊆ wss 3165 class class class wbr 4043 ↦ cmpt 4104 ⟶wf 5266 ‘cfv 5270 (class class class)co 5943 ∈ cmpo 5945 infcinf 7084 ℝcr 7923 1c1 7925 + caddc 7927 < clt 8106 ℕcn 9035 ℤ≥cuz 9647 seqcseq 10590 |
| 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 1469 ax-7 1470 ax-gen 1471 ax-ie1 1515 ax-ie2 1516 ax-8 1526 ax-10 1527 ax-11 1528 ax-i12 1529 ax-bndl 1531 ax-4 1532 ax-17 1548 ax-i9 1552 ax-ial 1556 ax-i5r 1557 ax-13 2177 ax-14 2178 ax-ext 2186 ax-coll 4158 ax-sep 4161 ax-nul 4169 ax-pow 4217 ax-pr 4252 ax-un 4479 ax-setind 4584 ax-iinf 4635 ax-cnex 8015 ax-resscn 8016 ax-1cn 8017 ax-1re 8018 ax-icn 8019 ax-addcl 8020 ax-addrcl 8021 ax-mulcl 8022 ax-addcom 8024 ax-addass 8026 ax-distr 8028 ax-i2m1 8029 ax-0lt1 8030 ax-0id 8032 ax-rnegex 8033 ax-cnre 8035 ax-pre-ltirr 8036 ax-pre-ltwlin 8037 ax-pre-lttrn 8038 ax-pre-apti 8039 ax-pre-ltadd 8040 |
| This theorem depends on definitions: df-bi 117 df-dc 836 df-3or 981 df-3an 982 df-tru 1375 df-fal 1378 df-nf 1483 df-sb 1785 df-eu 2056 df-mo 2057 df-clab 2191 df-cleq 2197 df-clel 2200 df-nfc 2336 df-ne 2376 df-nel 2471 df-ral 2488 df-rex 2489 df-reu 2490 df-rmo 2491 df-rab 2492 df-v 2773 df-sbc 2998 df-csb 3093 df-dif 3167 df-un 3169 df-in 3171 df-ss 3178 df-nul 3460 df-pw 3617 df-sn 3638 df-pr 3639 df-op 3641 df-uni 3850 df-int 3885 df-iun 3928 df-br 4044 df-opab 4105 df-mpt 4106 df-tr 4142 df-id 4339 df-po 4342 df-iso 4343 df-iord 4412 df-on 4414 df-ilim 4415 df-suc 4417 df-iom 4638 df-xp 4680 df-rel 4681 df-cnv 4682 df-co 4683 df-dm 4684 df-rn 4685 df-res 4686 df-ima 4687 df-iota 5231 df-fun 5272 df-fn 5273 df-f 5274 df-f1 5275 df-fo 5276 df-f1o 5277 df-fv 5278 df-isom 5279 df-riota 5898 df-ov 5946 df-oprab 5947 df-mpo 5948 df-1st 6225 df-2nd 6226 df-recs 6390 df-frec 6476 df-sup 7085 df-inf 7086 df-pnf 8108 df-mnf 8109 df-xr 8110 df-ltxr 8111 df-le 8112 df-sub 8244 df-neg 8245 df-inn 9036 df-n0 9295 df-z 9372 df-uz 9648 df-fz 10130 df-fzo 10264 df-seqfrec 10591 |
| This theorem is referenced by: nninfdclemp1 12763 nninfdclemlt 12764 nninfdclemf1 12765 |
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