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Mirrors > Home > ILE Home > Th. List > fzouzsplit | GIF version |
Description: Split an upper integer set into a half-open integer range and another upper integer set. (Contributed by Mario Carneiro, 21-Sep-2016.) |
Ref | Expression |
---|---|
fzouzsplit | ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → (ℤ≥‘𝐴) = ((𝐴..^𝐵) ∪ (ℤ≥‘𝐵))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eluzelz 9475 | . . . . . . . 8 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → 𝐵 ∈ ℤ) | |
2 | eluzelz 9475 | . . . . . . . 8 ⊢ (𝑥 ∈ (ℤ≥‘𝐴) → 𝑥 ∈ ℤ) | |
3 | zlelttric 9236 | . . . . . . . 8 ⊢ ((𝐵 ∈ ℤ ∧ 𝑥 ∈ ℤ) → (𝐵 ≤ 𝑥 ∨ 𝑥 < 𝐵)) | |
4 | 1, 2, 3 | syl2an 287 | . . . . . . 7 ⊢ ((𝐵 ∈ (ℤ≥‘𝐴) ∧ 𝑥 ∈ (ℤ≥‘𝐴)) → (𝐵 ≤ 𝑥 ∨ 𝑥 < 𝐵)) |
5 | 4 | orcomd 719 | . . . . . 6 ⊢ ((𝐵 ∈ (ℤ≥‘𝐴) ∧ 𝑥 ∈ (ℤ≥‘𝐴)) → (𝑥 < 𝐵 ∨ 𝐵 ≤ 𝑥)) |
6 | id 19 | . . . . . . . 8 ⊢ (𝑥 ∈ (ℤ≥‘𝐴) → 𝑥 ∈ (ℤ≥‘𝐴)) | |
7 | elfzo2 10085 | . . . . . . . . . 10 ⊢ (𝑥 ∈ (𝐴..^𝐵) ↔ (𝑥 ∈ (ℤ≥‘𝐴) ∧ 𝐵 ∈ ℤ ∧ 𝑥 < 𝐵)) | |
8 | df-3an 970 | . . . . . . . . . 10 ⊢ ((𝑥 ∈ (ℤ≥‘𝐴) ∧ 𝐵 ∈ ℤ ∧ 𝑥 < 𝐵) ↔ ((𝑥 ∈ (ℤ≥‘𝐴) ∧ 𝐵 ∈ ℤ) ∧ 𝑥 < 𝐵)) | |
9 | 7, 8 | bitri 183 | . . . . . . . . 9 ⊢ (𝑥 ∈ (𝐴..^𝐵) ↔ ((𝑥 ∈ (ℤ≥‘𝐴) ∧ 𝐵 ∈ ℤ) ∧ 𝑥 < 𝐵)) |
10 | 9 | baib 909 | . . . . . . . 8 ⊢ ((𝑥 ∈ (ℤ≥‘𝐴) ∧ 𝐵 ∈ ℤ) → (𝑥 ∈ (𝐴..^𝐵) ↔ 𝑥 < 𝐵)) |
11 | 6, 1, 10 | syl2anr 288 | . . . . . . 7 ⊢ ((𝐵 ∈ (ℤ≥‘𝐴) ∧ 𝑥 ∈ (ℤ≥‘𝐴)) → (𝑥 ∈ (𝐴..^𝐵) ↔ 𝑥 < 𝐵)) |
12 | eluz 9479 | . . . . . . . 8 ⊢ ((𝐵 ∈ ℤ ∧ 𝑥 ∈ ℤ) → (𝑥 ∈ (ℤ≥‘𝐵) ↔ 𝐵 ≤ 𝑥)) | |
13 | 1, 2, 12 | syl2an 287 | . . . . . . 7 ⊢ ((𝐵 ∈ (ℤ≥‘𝐴) ∧ 𝑥 ∈ (ℤ≥‘𝐴)) → (𝑥 ∈ (ℤ≥‘𝐵) ↔ 𝐵 ≤ 𝑥)) |
14 | 11, 13 | orbi12d 783 | . . . . . 6 ⊢ ((𝐵 ∈ (ℤ≥‘𝐴) ∧ 𝑥 ∈ (ℤ≥‘𝐴)) → ((𝑥 ∈ (𝐴..^𝐵) ∨ 𝑥 ∈ (ℤ≥‘𝐵)) ↔ (𝑥 < 𝐵 ∨ 𝐵 ≤ 𝑥))) |
15 | 5, 14 | mpbird 166 | . . . . 5 ⊢ ((𝐵 ∈ (ℤ≥‘𝐴) ∧ 𝑥 ∈ (ℤ≥‘𝐴)) → (𝑥 ∈ (𝐴..^𝐵) ∨ 𝑥 ∈ (ℤ≥‘𝐵))) |
16 | 15 | ex 114 | . . . 4 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → (𝑥 ∈ (ℤ≥‘𝐴) → (𝑥 ∈ (𝐴..^𝐵) ∨ 𝑥 ∈ (ℤ≥‘𝐵)))) |
17 | elun 3263 | . . . 4 ⊢ (𝑥 ∈ ((𝐴..^𝐵) ∪ (ℤ≥‘𝐵)) ↔ (𝑥 ∈ (𝐴..^𝐵) ∨ 𝑥 ∈ (ℤ≥‘𝐵))) | |
18 | 16, 17 | syl6ibr 161 | . . 3 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → (𝑥 ∈ (ℤ≥‘𝐴) → 𝑥 ∈ ((𝐴..^𝐵) ∪ (ℤ≥‘𝐵)))) |
19 | 18 | ssrdv 3148 | . 2 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → (ℤ≥‘𝐴) ⊆ ((𝐴..^𝐵) ∪ (ℤ≥‘𝐵))) |
20 | elfzouz 10086 | . . . . 5 ⊢ (𝑥 ∈ (𝐴..^𝐵) → 𝑥 ∈ (ℤ≥‘𝐴)) | |
21 | 20 | ssriv 3146 | . . . 4 ⊢ (𝐴..^𝐵) ⊆ (ℤ≥‘𝐴) |
22 | 21 | a1i 9 | . . 3 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → (𝐴..^𝐵) ⊆ (ℤ≥‘𝐴)) |
23 | uzss 9486 | . . 3 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → (ℤ≥‘𝐵) ⊆ (ℤ≥‘𝐴)) | |
24 | 22, 23 | unssd 3298 | . 2 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → ((𝐴..^𝐵) ∪ (ℤ≥‘𝐵)) ⊆ (ℤ≥‘𝐴)) |
25 | 19, 24 | eqssd 3159 | 1 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → (ℤ≥‘𝐴) = ((𝐴..^𝐵) ∪ (ℤ≥‘𝐵))) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∧ wa 103 ↔ wb 104 ∨ wo 698 ∧ w3a 968 = wceq 1343 ∈ wcel 2136 ∪ cun 3114 ⊆ wss 3116 class class class wbr 3982 ‘cfv 5188 (class class class)co 5842 < clt 7933 ≤ cle 7934 ℤcz 9191 ℤ≥cuz 9466 ..^cfzo 10077 |
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 604 ax-in2 605 ax-io 699 ax-5 1435 ax-7 1436 ax-gen 1437 ax-ie1 1481 ax-ie2 1482 ax-8 1492 ax-10 1493 ax-11 1494 ax-i12 1495 ax-bndl 1497 ax-4 1498 ax-17 1514 ax-i9 1518 ax-ial 1522 ax-i5r 1523 ax-13 2138 ax-14 2139 ax-ext 2147 ax-sep 4100 ax-pow 4153 ax-pr 4187 ax-un 4411 ax-setind 4514 ax-cnex 7844 ax-resscn 7845 ax-1cn 7846 ax-1re 7847 ax-icn 7848 ax-addcl 7849 ax-addrcl 7850 ax-mulcl 7851 ax-addcom 7853 ax-addass 7855 ax-distr 7857 ax-i2m1 7858 ax-0lt1 7859 ax-0id 7861 ax-rnegex 7862 ax-cnre 7864 ax-pre-ltirr 7865 ax-pre-ltwlin 7866 ax-pre-lttrn 7867 ax-pre-ltadd 7869 |
This theorem depends on definitions: df-bi 116 df-3or 969 df-3an 970 df-tru 1346 df-fal 1349 df-nf 1449 df-sb 1751 df-eu 2017 df-mo 2018 df-clab 2152 df-cleq 2158 df-clel 2161 df-nfc 2297 df-ne 2337 df-nel 2432 df-ral 2449 df-rex 2450 df-reu 2451 df-rab 2453 df-v 2728 df-sbc 2952 df-csb 3046 df-dif 3118 df-un 3120 df-in 3122 df-ss 3129 df-pw 3561 df-sn 3582 df-pr 3583 df-op 3585 df-uni 3790 df-int 3825 df-iun 3868 df-br 3983 df-opab 4044 df-mpt 4045 df-id 4271 df-xp 4610 df-rel 4611 df-cnv 4612 df-co 4613 df-dm 4614 df-rn 4615 df-res 4616 df-ima 4617 df-iota 5153 df-fun 5190 df-fn 5191 df-f 5192 df-fv 5196 df-riota 5798 df-ov 5845 df-oprab 5846 df-mpo 5847 df-1st 6108 df-2nd 6109 df-pnf 7935 df-mnf 7936 df-xr 7937 df-ltxr 7938 df-le 7939 df-sub 8071 df-neg 8072 df-inn 8858 df-n0 9115 df-z 9192 df-uz 9467 df-fz 9945 df-fzo 10078 |
This theorem is referenced by: zsupcllemstep 11878 |
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