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| Mirrors > Home > ILE Home > Th. List > nninfdclemf | GIF version | ||
| Description: Lemma for nninfdc 13221. 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 9893 | . . 3 ⊢ ℕ = (ℤ≥‘1) | |
| 2 | 1zzd 9606 | . . 3 ⊢ (𝜑 → 1 ∈ ℤ) | |
| 3 | eqid 2234 | . . . . 5 ⊢ (𝑖 ∈ ℕ ↦ 𝐽) = (𝑖 ∈ ℕ ↦ 𝐽) | |
| 4 | eqidd 2235 | . . . . 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 5773 | . . . 4 ⊢ ((𝜑 ∧ 𝑝 ∈ ℕ) → ((𝑖 ∈ ℕ ↦ 𝐽)‘𝑝) = 𝐽) |
| 10 | 9, 8 | eqeltrd 2311 | . . 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 531 | . . . 4 ⊢ ((𝜑 ∧ (𝑝 ∈ 𝐴 ∧ 𝑞 ∈ 𝐴)) → 𝑝 ∈ 𝐴) | |
| 18 | simprr 533 | . . . 4 ⊢ ((𝜑 ∧ (𝑝 ∈ 𝐴 ∧ 𝑞 ∈ 𝐴)) → 𝑞 ∈ 𝐴) | |
| 19 | 12, 14, 16, 17, 18 | nninfdclemcl 13216 | . . 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 10830 | . 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 5503 | . 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 842 = wceq 1398 ∈ wcel 2205 ∀wral 2522 ∃wrex 2523 ∩ cin 3212 ⊆ wss 3213 class class class wbr 4111 ↦ cmpt 4173 ⟶wf 5350 ‘cfv 5354 (class class class)co 6052 ∈ cmpo 6054 infcinf 7276 ℝcr 8128 1c1 8130 + caddc 8132 < clt 8310 ℕcn 9239 ℤ≥cuz 9856 seqcseq 10813 |
| 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 619 ax-in2 620 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2207 ax-14 2208 ax-ext 2216 ax-coll 4227 ax-sep 4230 ax-nul 4238 ax-pow 4289 ax-pr 4324 ax-un 4556 ax-setind 4661 ax-iinf 4712 ax-cnex 8220 ax-resscn 8221 ax-1cn 8222 ax-1re 8223 ax-icn 8224 ax-addcl 8225 ax-addrcl 8226 ax-mulcl 8227 ax-addcom 8229 ax-addass 8231 ax-distr 8233 ax-i2m1 8234 ax-0lt1 8235 ax-0id 8237 ax-rnegex 8238 ax-cnre 8240 ax-pre-ltirr 8241 ax-pre-ltwlin 8242 ax-pre-lttrn 8243 ax-pre-apti 8244 ax-pre-ltadd 8245 |
| This theorem depends on definitions: df-bi 117 df-dc 843 df-3or 1006 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1812 df-eu 2085 df-mo 2086 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-ne 2415 df-nel 2510 df-ral 2527 df-rex 2528 df-reu 2529 df-rmo 2530 df-rab 2531 df-v 2817 df-sbc 3045 df-csb 3141 df-dif 3215 df-un 3217 df-in 3219 df-ss 3226 df-nul 3511 df-pw 3673 df-sn 3697 df-pr 3698 df-op 3700 df-uni 3917 df-int 3952 df-iun 3995 df-br 4112 df-opab 4174 df-mpt 4175 df-tr 4211 df-id 4416 df-po 4419 df-iso 4420 df-iord 4489 df-on 4491 df-ilim 4492 df-suc 4494 df-iom 4715 df-xp 4757 df-rel 4758 df-cnv 4759 df-co 4760 df-dm 4761 df-rn 4762 df-res 4763 df-ima 4764 df-iota 5314 df-fun 5356 df-fn 5357 df-f 5358 df-f1 5359 df-fo 5360 df-f1o 5361 df-fv 5362 df-isom 5363 df-riota 6005 df-ov 6055 df-oprab 6056 df-mpo 6057 df-1st 6336 df-2nd 6337 df-recs 6538 df-frec 6624 df-sup 7277 df-inf 7278 df-pnf 8312 df-mnf 8313 df-xr 8314 df-ltxr 8315 df-le 8316 df-sub 8448 df-neg 8449 df-inn 9240 df-n0 9499 df-z 9580 df-uz 9857 df-fz 10346 df-fzo 10481 df-seqfrec 10814 |
| This theorem is referenced by: nninfdclemp1 13218 nninfdclemlt 13219 nninfdclemf1 13220 |
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