| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > ILE Home > Th. List > nninfdclemf | GIF version | ||
| Description: Lemma for nninfdc 13137. 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 9836 | . . 3 ⊢ ℕ = (ℤ≥‘1) | |
| 2 | 1zzd 9550 | . . 3 ⊢ (𝜑 → 1 ∈ ℤ) | |
| 3 | eqid 2231 | . . . . 5 ⊢ (𝑖 ∈ ℕ ↦ 𝐽) = (𝑖 ∈ ℕ ↦ 𝐽) | |
| 4 | eqidd 2232 | . . . . 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 5749 | . . . 4 ⊢ ((𝜑 ∧ 𝑝 ∈ ℕ) → ((𝑖 ∈ ℕ ↦ 𝐽)‘𝑝) = 𝐽) |
| 10 | 9, 8 | eqeltrd 2308 | . . 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 13132 | . . 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 10772 | . 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 5482 | . 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 2202 ∀wral 2511 ∃wrex 2512 ∩ cin 3200 ⊆ wss 3201 class class class wbr 4093 ↦ cmpt 4155 ⟶wf 5329 ‘cfv 5333 (class class class)co 6028 ∈ cmpo 6030 infcinf 7225 ℝcr 8074 1c1 8076 + caddc 8078 < clt 8256 ℕcn 9185 ℤ≥cuz 9799 seqcseq 10755 |
| 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 2204 ax-14 2205 ax-ext 2213 ax-coll 4209 ax-sep 4212 ax-nul 4220 ax-pow 4270 ax-pr 4305 ax-un 4536 ax-setind 4641 ax-iinf 4692 ax-cnex 8166 ax-resscn 8167 ax-1cn 8168 ax-1re 8169 ax-icn 8170 ax-addcl 8171 ax-addrcl 8172 ax-mulcl 8173 ax-addcom 8175 ax-addass 8177 ax-distr 8179 ax-i2m1 8180 ax-0lt1 8181 ax-0id 8183 ax-rnegex 8184 ax-cnre 8186 ax-pre-ltirr 8187 ax-pre-ltwlin 8188 ax-pre-lttrn 8189 ax-pre-apti 8190 ax-pre-ltadd 8191 |
| 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 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-ne 2404 df-nel 2499 df-ral 2516 df-rex 2517 df-reu 2518 df-rmo 2519 df-rab 2520 df-v 2805 df-sbc 3033 df-csb 3129 df-dif 3203 df-un 3205 df-in 3207 df-ss 3214 df-nul 3497 df-pw 3658 df-sn 3679 df-pr 3680 df-op 3682 df-uni 3899 df-int 3934 df-iun 3977 df-br 4094 df-opab 4156 df-mpt 4157 df-tr 4193 df-id 4396 df-po 4399 df-iso 4400 df-iord 4469 df-on 4471 df-ilim 4472 df-suc 4474 df-iom 4695 df-xp 4737 df-rel 4738 df-cnv 4739 df-co 4740 df-dm 4741 df-rn 4742 df-res 4743 df-ima 4744 df-iota 5293 df-fun 5335 df-fn 5336 df-f 5337 df-f1 5338 df-fo 5339 df-f1o 5340 df-fv 5341 df-isom 5342 df-riota 5981 df-ov 6031 df-oprab 6032 df-mpo 6033 df-1st 6312 df-2nd 6313 df-recs 6514 df-frec 6600 df-sup 7226 df-inf 7227 df-pnf 8258 df-mnf 8259 df-xr 8260 df-ltxr 8261 df-le 8262 df-sub 8394 df-neg 8395 df-inn 9186 df-n0 9445 df-z 9524 df-uz 9800 df-fz 10289 df-fzo 10423 df-seqfrec 10756 |
| This theorem is referenced by: nninfdclemp1 13134 nninfdclemlt 13135 nninfdclemf1 13136 |
| Copyright terms: Public domain | W3C validator |