Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
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 9335 | . . . . . . . 8 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → 𝐵 ∈ ℤ) | |
2 | eluzelz 9335 | . . . . . . . 8 ⊢ (𝑥 ∈ (ℤ≥‘𝐴) → 𝑥 ∈ ℤ) | |
3 | zlelttric 9099 | . . . . . . . 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 718 | . . . . . 6 ⊢ ((𝐵 ∈ (ℤ≥‘𝐴) ∧ 𝑥 ∈ (ℤ≥‘𝐴)) → (𝑥 < 𝐵 ∨ 𝐵 ≤ 𝑥)) |
6 | id 19 | . . . . . . . 8 ⊢ (𝑥 ∈ (ℤ≥‘𝐴) → 𝑥 ∈ (ℤ≥‘𝐴)) | |
7 | elfzo2 9927 | . . . . . . . . . 10 ⊢ (𝑥 ∈ (𝐴..^𝐵) ↔ (𝑥 ∈ (ℤ≥‘𝐴) ∧ 𝐵 ∈ ℤ ∧ 𝑥 < 𝐵)) | |
8 | df-3an 964 | . . . . . . . . . 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 904 | . . . . . . . 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 9339 | . . . . . . . 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 782 | . . . . . 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 3217 | . . . 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 3103 | . 2 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → (ℤ≥‘𝐴) ⊆ ((𝐴..^𝐵) ∪ (ℤ≥‘𝐵))) |
20 | elfzouz 9928 | . . . . 5 ⊢ (𝑥 ∈ (𝐴..^𝐵) → 𝑥 ∈ (ℤ≥‘𝐴)) | |
21 | 20 | ssriv 3101 | . . . 4 ⊢ (𝐴..^𝐵) ⊆ (ℤ≥‘𝐴) |
22 | 21 | a1i 9 | . . 3 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → (𝐴..^𝐵) ⊆ (ℤ≥‘𝐴)) |
23 | uzss 9346 | . . 3 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → (ℤ≥‘𝐵) ⊆ (ℤ≥‘𝐴)) | |
24 | 22, 23 | unssd 3252 | . 2 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → ((𝐴..^𝐵) ∪ (ℤ≥‘𝐵)) ⊆ (ℤ≥‘𝐴)) |
25 | 19, 24 | eqssd 3114 | 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 697 ∧ w3a 962 = wceq 1331 ∈ wcel 1480 ∪ cun 3069 ⊆ wss 3071 class class class wbr 3929 ‘cfv 5123 (class class class)co 5774 < clt 7800 ≤ cle 7801 ℤcz 9054 ℤ≥cuz 9326 ..^cfzo 9919 |
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 603 ax-in2 604 ax-io 698 ax-5 1423 ax-7 1424 ax-gen 1425 ax-ie1 1469 ax-ie2 1470 ax-8 1482 ax-10 1483 ax-11 1484 ax-i12 1485 ax-bndl 1486 ax-4 1487 ax-13 1491 ax-14 1492 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-ext 2121 ax-sep 4046 ax-pow 4098 ax-pr 4131 ax-un 4355 ax-setind 4452 ax-cnex 7711 ax-resscn 7712 ax-1cn 7713 ax-1re 7714 ax-icn 7715 ax-addcl 7716 ax-addrcl 7717 ax-mulcl 7718 ax-addcom 7720 ax-addass 7722 ax-distr 7724 ax-i2m1 7725 ax-0lt1 7726 ax-0id 7728 ax-rnegex 7729 ax-cnre 7731 ax-pre-ltirr 7732 ax-pre-ltwlin 7733 ax-pre-lttrn 7734 ax-pre-ltadd 7736 |
This theorem depends on definitions: df-bi 116 df-3or 963 df-3an 964 df-tru 1334 df-fal 1337 df-nf 1437 df-sb 1736 df-eu 2002 df-mo 2003 df-clab 2126 df-cleq 2132 df-clel 2135 df-nfc 2270 df-ne 2309 df-nel 2404 df-ral 2421 df-rex 2422 df-reu 2423 df-rab 2425 df-v 2688 df-sbc 2910 df-csb 3004 df-dif 3073 df-un 3075 df-in 3077 df-ss 3084 df-pw 3512 df-sn 3533 df-pr 3534 df-op 3536 df-uni 3737 df-int 3772 df-iun 3815 df-br 3930 df-opab 3990 df-mpt 3991 df-id 4215 df-xp 4545 df-rel 4546 df-cnv 4547 df-co 4548 df-dm 4549 df-rn 4550 df-res 4551 df-ima 4552 df-iota 5088 df-fun 5125 df-fn 5126 df-f 5127 df-fv 5131 df-riota 5730 df-ov 5777 df-oprab 5778 df-mpo 5779 df-1st 6038 df-2nd 6039 df-pnf 7802 df-mnf 7803 df-xr 7804 df-ltxr 7805 df-le 7806 df-sub 7935 df-neg 7936 df-inn 8721 df-n0 8978 df-z 9055 df-uz 9327 df-fz 9791 df-fzo 9920 |
This theorem is referenced by: zsupcllemstep 11638 |
Copyright terms: Public domain | W3C validator |