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Mirrors > Home > ILE Home > Th. List > frec2uzisod | GIF version |
Description: 𝐺 (see frec2uz0d 10355) is an isomorphism from natural ordinals to upper integers. (Contributed by Jim Kingdon, 17-May-2020.) |
Ref | Expression |
---|---|
frec2uz.1 | ⊢ (𝜑 → 𝐶 ∈ ℤ) |
frec2uz.2 | ⊢ 𝐺 = frec((𝑥 ∈ ℤ ↦ (𝑥 + 1)), 𝐶) |
Ref | Expression |
---|---|
frec2uzisod | ⊢ (𝜑 → 𝐺 Isom E , < (ω, (ℤ≥‘𝐶))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | frec2uz.1 | . . 3 ⊢ (𝜑 → 𝐶 ∈ ℤ) | |
2 | frec2uz.2 | . . 3 ⊢ 𝐺 = frec((𝑥 ∈ ℤ ↦ (𝑥 + 1)), 𝐶) | |
3 | 1, 2 | frec2uzf1od 10362 | . 2 ⊢ (𝜑 → 𝐺:ω–1-1-onto→(ℤ≥‘𝐶)) |
4 | epel 4277 | . . . 4 ⊢ (𝑦 E 𝑧 ↔ 𝑦 ∈ 𝑧) | |
5 | 1 | adantr 274 | . . . . 5 ⊢ ((𝜑 ∧ (𝑦 ∈ ω ∧ 𝑧 ∈ ω)) → 𝐶 ∈ ℤ) |
6 | simprl 526 | . . . . 5 ⊢ ((𝜑 ∧ (𝑦 ∈ ω ∧ 𝑧 ∈ ω)) → 𝑦 ∈ ω) | |
7 | simprr 527 | . . . . 5 ⊢ ((𝜑 ∧ (𝑦 ∈ ω ∧ 𝑧 ∈ ω)) → 𝑧 ∈ ω) | |
8 | 5, 2, 6, 7 | frec2uzlt2d 10360 | . . . 4 ⊢ ((𝜑 ∧ (𝑦 ∈ ω ∧ 𝑧 ∈ ω)) → (𝑦 ∈ 𝑧 ↔ (𝐺‘𝑦) < (𝐺‘𝑧))) |
9 | 4, 8 | syl5bb 191 | . . 3 ⊢ ((𝜑 ∧ (𝑦 ∈ ω ∧ 𝑧 ∈ ω)) → (𝑦 E 𝑧 ↔ (𝐺‘𝑦) < (𝐺‘𝑧))) |
10 | 9 | ralrimivva 2552 | . 2 ⊢ (𝜑 → ∀𝑦 ∈ ω ∀𝑧 ∈ ω (𝑦 E 𝑧 ↔ (𝐺‘𝑦) < (𝐺‘𝑧))) |
11 | df-isom 5207 | . 2 ⊢ (𝐺 Isom E , < (ω, (ℤ≥‘𝐶)) ↔ (𝐺:ω–1-1-onto→(ℤ≥‘𝐶) ∧ ∀𝑦 ∈ ω ∀𝑧 ∈ ω (𝑦 E 𝑧 ↔ (𝐺‘𝑦) < (𝐺‘𝑧)))) | |
12 | 3, 10, 11 | sylanbrc 415 | 1 ⊢ (𝜑 → 𝐺 Isom E , < (ω, (ℤ≥‘𝐶))) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∧ wa 103 ↔ wb 104 = wceq 1348 ∈ wcel 2141 ∀wral 2448 class class class wbr 3989 ↦ cmpt 4050 E cep 4272 ωcom 4574 –1-1-onto→wf1o 5197 ‘cfv 5198 Isom wiso 5199 (class class class)co 5853 freccfrec 6369 1c1 7775 + caddc 7777 < clt 7954 ℤcz 9212 ℤ≥cuz 9487 |
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-ltadd 7890 |
This theorem depends on definitions: df-bi 116 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-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-eprel 4274 df-id 4278 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-recs 6284 df-frec 6370 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 |
This theorem is referenced by: (None) |
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