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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 9359 | . . . . . . . 8 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → 𝐵 ∈ ℤ) | |
2 | eluzelz 9359 | . . . . . . . 8 ⊢ (𝑥 ∈ (ℤ≥‘𝐴) → 𝑥 ∈ ℤ) | |
3 | zlelttric 9123 | . . . . . . . 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 9958 | . . . . . . . . . 10 ⊢ (𝑥 ∈ (𝐴..^𝐵) ↔ (𝑥 ∈ (ℤ≥‘𝐴) ∧ 𝐵 ∈ ℤ ∧ 𝑥 < 𝐵)) | |
8 | df-3an 965 | . . . . . . . . . 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 905 | . . . . . . . 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 9363 | . . . . . . . 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 3222 | . . . 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 3108 | . 2 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → (ℤ≥‘𝐴) ⊆ ((𝐴..^𝐵) ∪ (ℤ≥‘𝐵))) |
20 | elfzouz 9959 | . . . . 5 ⊢ (𝑥 ∈ (𝐴..^𝐵) → 𝑥 ∈ (ℤ≥‘𝐴)) | |
21 | 20 | ssriv 3106 | . . . 4 ⊢ (𝐴..^𝐵) ⊆ (ℤ≥‘𝐴) |
22 | 21 | a1i 9 | . . 3 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → (𝐴..^𝐵) ⊆ (ℤ≥‘𝐴)) |
23 | uzss 9370 | . . 3 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → (ℤ≥‘𝐵) ⊆ (ℤ≥‘𝐴)) | |
24 | 22, 23 | unssd 3257 | . 2 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → ((𝐴..^𝐵) ∪ (ℤ≥‘𝐵)) ⊆ (ℤ≥‘𝐴)) |
25 | 19, 24 | eqssd 3119 | 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 963 = wceq 1332 ∈ wcel 1481 ∪ cun 3074 ⊆ wss 3076 class class class wbr 3937 ‘cfv 5131 (class class class)co 5782 < clt 7824 ≤ cle 7825 ℤcz 9078 ℤ≥cuz 9350 ..^cfzo 9950 |
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 1424 ax-7 1425 ax-gen 1426 ax-ie1 1470 ax-ie2 1471 ax-8 1483 ax-10 1484 ax-11 1485 ax-i12 1486 ax-bndl 1487 ax-4 1488 ax-13 1492 ax-14 1493 ax-17 1507 ax-i9 1511 ax-ial 1515 ax-i5r 1516 ax-ext 2122 ax-sep 4054 ax-pow 4106 ax-pr 4139 ax-un 4363 ax-setind 4460 ax-cnex 7735 ax-resscn 7736 ax-1cn 7737 ax-1re 7738 ax-icn 7739 ax-addcl 7740 ax-addrcl 7741 ax-mulcl 7742 ax-addcom 7744 ax-addass 7746 ax-distr 7748 ax-i2m1 7749 ax-0lt1 7750 ax-0id 7752 ax-rnegex 7753 ax-cnre 7755 ax-pre-ltirr 7756 ax-pre-ltwlin 7757 ax-pre-lttrn 7758 ax-pre-ltadd 7760 |
This theorem depends on definitions: df-bi 116 df-3or 964 df-3an 965 df-tru 1335 df-fal 1338 df-nf 1438 df-sb 1737 df-eu 2003 df-mo 2004 df-clab 2127 df-cleq 2133 df-clel 2136 df-nfc 2271 df-ne 2310 df-nel 2405 df-ral 2422 df-rex 2423 df-reu 2424 df-rab 2426 df-v 2691 df-sbc 2914 df-csb 3008 df-dif 3078 df-un 3080 df-in 3082 df-ss 3089 df-pw 3517 df-sn 3538 df-pr 3539 df-op 3541 df-uni 3745 df-int 3780 df-iun 3823 df-br 3938 df-opab 3998 df-mpt 3999 df-id 4223 df-xp 4553 df-rel 4554 df-cnv 4555 df-co 4556 df-dm 4557 df-rn 4558 df-res 4559 df-ima 4560 df-iota 5096 df-fun 5133 df-fn 5134 df-f 5135 df-fv 5139 df-riota 5738 df-ov 5785 df-oprab 5786 df-mpo 5787 df-1st 6046 df-2nd 6047 df-pnf 7826 df-mnf 7827 df-xr 7828 df-ltxr 7829 df-le 7830 df-sub 7959 df-neg 7960 df-inn 8745 df-n0 9002 df-z 9079 df-uz 9351 df-fz 9822 df-fzo 9951 |
This theorem is referenced by: zsupcllemstep 11674 |
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