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Mirrors > Home > ILE Home > Th. List > nninfdclemf1 | GIF version |
Description: Lemma for nninfdc 12408. The function from nninfdclemf 12404 is one-to-one. (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 |
---|---|
nninfdclemf1 | ⊢ (𝜑 → 𝐹:ℕ–1-1→𝐴) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nninfdclemf.a | . . 3 ⊢ (𝜑 → 𝐴 ⊆ ℕ) | |
2 | nninfdclemf.dc | . . 3 ⊢ (𝜑 → ∀𝑥 ∈ ℕ DECID 𝑥 ∈ 𝐴) | |
3 | nninfdclemf.nb | . . 3 ⊢ (𝜑 → ∀𝑚 ∈ ℕ ∃𝑛 ∈ 𝐴 𝑚 < 𝑛) | |
4 | nninfdclemf.j | . . 3 ⊢ (𝜑 → (𝐽 ∈ 𝐴 ∧ 1 < 𝐽)) | |
5 | nninfdclemf.f | . . 3 ⊢ 𝐹 = seq1((𝑦 ∈ ℕ, 𝑧 ∈ ℕ ↦ inf((𝐴 ∩ (ℤ≥‘(𝑦 + 1))), ℝ, < )), (𝑖 ∈ ℕ ↦ 𝐽)) | |
6 | 1, 2, 3, 4, 5 | nninfdclemf 12404 | . 2 ⊢ (𝜑 → 𝐹:ℕ⟶𝐴) |
7 | fveq2 5496 | . . . . 5 ⊢ (𝑢 = 𝑣 → (𝐹‘𝑢) = (𝐹‘𝑣)) | |
8 | fveq2 5496 | . . . . 5 ⊢ (𝑢 = 𝑝 → (𝐹‘𝑢) = (𝐹‘𝑝)) | |
9 | fveq2 5496 | . . . . 5 ⊢ (𝑢 = 𝑞 → (𝐹‘𝑢) = (𝐹‘𝑞)) | |
10 | nnssre 8882 | . . . . 5 ⊢ ℕ ⊆ ℝ | |
11 | 1 | adantr 274 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑢 ∈ ℕ) → 𝐴 ⊆ ℕ) |
12 | 6 | ffvelrnda 5631 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑢 ∈ ℕ) → (𝐹‘𝑢) ∈ 𝐴) |
13 | 11, 12 | sseldd 3148 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑢 ∈ ℕ) → (𝐹‘𝑢) ∈ ℕ) |
14 | 13 | nnred 8891 | . . . . 5 ⊢ ((𝜑 ∧ 𝑢 ∈ ℕ) → (𝐹‘𝑢) ∈ ℝ) |
15 | 1 | ad2antrr 485 | . . . . . . 7 ⊢ (((𝜑 ∧ (𝑢 ∈ ℕ ∧ 𝑣 ∈ ℕ)) ∧ 𝑢 < 𝑣) → 𝐴 ⊆ ℕ) |
16 | 2 | ad2antrr 485 | . . . . . . 7 ⊢ (((𝜑 ∧ (𝑢 ∈ ℕ ∧ 𝑣 ∈ ℕ)) ∧ 𝑢 < 𝑣) → ∀𝑥 ∈ ℕ DECID 𝑥 ∈ 𝐴) |
17 | 3 | ad2antrr 485 | . . . . . . 7 ⊢ (((𝜑 ∧ (𝑢 ∈ ℕ ∧ 𝑣 ∈ ℕ)) ∧ 𝑢 < 𝑣) → ∀𝑚 ∈ ℕ ∃𝑛 ∈ 𝐴 𝑚 < 𝑛) |
18 | 4 | ad2antrr 485 | . . . . . . 7 ⊢ (((𝜑 ∧ (𝑢 ∈ ℕ ∧ 𝑣 ∈ ℕ)) ∧ 𝑢 < 𝑣) → (𝐽 ∈ 𝐴 ∧ 1 < 𝐽)) |
19 | simplrl 530 | . . . . . . 7 ⊢ (((𝜑 ∧ (𝑢 ∈ ℕ ∧ 𝑣 ∈ ℕ)) ∧ 𝑢 < 𝑣) → 𝑢 ∈ ℕ) | |
20 | simplrr 531 | . . . . . . 7 ⊢ (((𝜑 ∧ (𝑢 ∈ ℕ ∧ 𝑣 ∈ ℕ)) ∧ 𝑢 < 𝑣) → 𝑣 ∈ ℕ) | |
21 | simpr 109 | . . . . . . 7 ⊢ (((𝜑 ∧ (𝑢 ∈ ℕ ∧ 𝑣 ∈ ℕ)) ∧ 𝑢 < 𝑣) → 𝑢 < 𝑣) | |
22 | 15, 16, 17, 18, 5, 19, 20, 21 | nninfdclemlt 12406 | . . . . . 6 ⊢ (((𝜑 ∧ (𝑢 ∈ ℕ ∧ 𝑣 ∈ ℕ)) ∧ 𝑢 < 𝑣) → (𝐹‘𝑢) < (𝐹‘𝑣)) |
23 | 22 | ex 114 | . . . . 5 ⊢ ((𝜑 ∧ (𝑢 ∈ ℕ ∧ 𝑣 ∈ ℕ)) → (𝑢 < 𝑣 → (𝐹‘𝑢) < (𝐹‘𝑣))) |
24 | 7, 8, 9, 10, 14, 23 | eqord1 8402 | . . . 4 ⊢ ((𝜑 ∧ (𝑝 ∈ ℕ ∧ 𝑞 ∈ ℕ)) → (𝑝 = 𝑞 ↔ (𝐹‘𝑝) = (𝐹‘𝑞))) |
25 | 24 | biimprd 157 | . . 3 ⊢ ((𝜑 ∧ (𝑝 ∈ ℕ ∧ 𝑞 ∈ ℕ)) → ((𝐹‘𝑝) = (𝐹‘𝑞) → 𝑝 = 𝑞)) |
26 | 25 | ralrimivva 2552 | . 2 ⊢ (𝜑 → ∀𝑝 ∈ ℕ ∀𝑞 ∈ ℕ ((𝐹‘𝑝) = (𝐹‘𝑞) → 𝑝 = 𝑞)) |
27 | dff13 5747 | . 2 ⊢ (𝐹:ℕ–1-1→𝐴 ↔ (𝐹:ℕ⟶𝐴 ∧ ∀𝑝 ∈ ℕ ∀𝑞 ∈ ℕ ((𝐹‘𝑝) = (𝐹‘𝑞) → 𝑝 = 𝑞))) | |
28 | 6, 26, 27 | sylanbrc 415 | 1 ⊢ (𝜑 → 𝐹:ℕ–1-1→𝐴) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∧ wa 103 DECID wdc 829 = wceq 1348 ∈ wcel 2141 ∀wral 2448 ∃wrex 2449 ∩ cin 3120 ⊆ wss 3121 class class class wbr 3989 ↦ cmpt 4050 ⟶wf 5194 –1-1→wf1 5195 ‘cfv 5198 (class class class)co 5853 ∈ cmpo 5855 infcinf 6960 ℝcr 7773 1c1 7775 + caddc 7777 < clt 7954 ℕcn 8878 ℤ≥cuz 9487 seqcseq 10401 |
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 609 ax-in2 610 ax-io 704 ax-5 1440 ax-7 1441 ax-gen 1442 ax-ie1 1486 ax-ie2 1487 ax-8 1497 ax-10 1498 ax-11 1499 ax-i12 1500 ax-bndl 1502 ax-4 1503 ax-17 1519 ax-i9 1523 ax-ial 1527 ax-i5r 1528 ax-13 2143 ax-14 2144 ax-ext 2152 ax-coll 4104 ax-sep 4107 ax-nul 4115 ax-pow 4160 ax-pr 4194 ax-un 4418 ax-setind 4521 ax-iinf 4572 ax-cnex 7865 ax-resscn 7866 ax-1cn 7867 ax-1re 7868 ax-icn 7869 ax-addcl 7870 ax-addrcl 7871 ax-mulcl 7872 ax-addcom 7874 ax-addass 7876 ax-distr 7878 ax-i2m1 7879 ax-0lt1 7880 ax-0id 7882 ax-rnegex 7883 ax-cnre 7885 ax-pre-ltirr 7886 ax-pre-ltwlin 7887 ax-pre-lttrn 7888 ax-pre-apti 7889 ax-pre-ltadd 7890 |
This theorem depends on definitions: df-bi 116 df-dc 830 df-3or 974 df-3an 975 df-tru 1351 df-fal 1354 df-nf 1454 df-sb 1756 df-eu 2022 df-mo 2023 df-clab 2157 df-cleq 2163 df-clel 2166 df-nfc 2301 df-ne 2341 df-nel 2436 df-ral 2453 df-rex 2454 df-reu 2455 df-rmo 2456 df-rab 2457 df-v 2732 df-sbc 2956 df-csb 3050 df-dif 3123 df-un 3125 df-in 3127 df-ss 3134 df-nul 3415 df-pw 3568 df-sn 3589 df-pr 3590 df-op 3592 df-uni 3797 df-int 3832 df-iun 3875 df-br 3990 df-opab 4051 df-mpt 4052 df-tr 4088 df-id 4278 df-po 4281 df-iso 4282 df-iord 4351 df-on 4353 df-ilim 4354 df-suc 4356 df-iom 4575 df-xp 4617 df-rel 4618 df-cnv 4619 df-co 4620 df-dm 4621 df-rn 4622 df-res 4623 df-ima 4624 df-iota 5160 df-fun 5200 df-fn 5201 df-f 5202 df-f1 5203 df-fo 5204 df-f1o 5205 df-fv 5206 df-isom 5207 df-riota 5809 df-ov 5856 df-oprab 5857 df-mpo 5858 df-1st 6119 df-2nd 6120 df-recs 6284 df-frec 6370 df-sup 6961 df-inf 6962 df-pnf 7956 df-mnf 7957 df-xr 7958 df-ltxr 7959 df-le 7960 df-sub 8092 df-neg 8093 df-inn 8879 df-n0 9136 df-z 9213 df-uz 9488 df-fz 9966 df-fzo 10099 df-seqfrec 10402 |
This theorem is referenced by: nninfdc 12408 |
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