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Mirrors > Home > MPE Home > Th. List > fzosplitsnm1 | Structured version Visualization version GIF version |
Description: Removing a singleton from a half-open integer range at the end. (Contributed by Alexander van der Vekens, 23-Mar-2018.) |
Ref | Expression |
---|---|
fzosplitsnm1 | ⊢ ((𝐴 ∈ ℤ ∧ 𝐵 ∈ (ℤ≥‘(𝐴 + 1))) → (𝐴..^𝐵) = ((𝐴..^(𝐵 − 1)) ∪ {(𝐵 − 1)})) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eluzelz 12327 | . . . . . 6 ⊢ (𝐵 ∈ (ℤ≥‘(𝐴 + 1)) → 𝐵 ∈ ℤ) | |
2 | 1 | zcnd 12162 | . . . . 5 ⊢ (𝐵 ∈ (ℤ≥‘(𝐴 + 1)) → 𝐵 ∈ ℂ) |
3 | 2 | adantl 485 | . . . 4 ⊢ ((𝐴 ∈ ℤ ∧ 𝐵 ∈ (ℤ≥‘(𝐴 + 1))) → 𝐵 ∈ ℂ) |
4 | ax-1cn 10666 | . . . 4 ⊢ 1 ∈ ℂ | |
5 | npcan 10966 | . . . . 5 ⊢ ((𝐵 ∈ ℂ ∧ 1 ∈ ℂ) → ((𝐵 − 1) + 1) = 𝐵) | |
6 | 5 | eqcomd 2744 | . . . 4 ⊢ ((𝐵 ∈ ℂ ∧ 1 ∈ ℂ) → 𝐵 = ((𝐵 − 1) + 1)) |
7 | 3, 4, 6 | sylancl 589 | . . 3 ⊢ ((𝐴 ∈ ℤ ∧ 𝐵 ∈ (ℤ≥‘(𝐴 + 1))) → 𝐵 = ((𝐵 − 1) + 1)) |
8 | 7 | oveq2d 7180 | . 2 ⊢ ((𝐴 ∈ ℤ ∧ 𝐵 ∈ (ℤ≥‘(𝐴 + 1))) → (𝐴..^𝐵) = (𝐴..^((𝐵 − 1) + 1))) |
9 | eluzp1m1 12343 | . . . 4 ⊢ ((𝐴 ∈ ℤ ∧ 𝐵 ∈ (ℤ≥‘(𝐴 + 1))) → (𝐵 − 1) ∈ (ℤ≥‘𝐴)) | |
10 | 1 | adantl 485 | . . . . 5 ⊢ ((𝐴 ∈ ℤ ∧ 𝐵 ∈ (ℤ≥‘(𝐴 + 1))) → 𝐵 ∈ ℤ) |
11 | peano2zm 12099 | . . . . 5 ⊢ (𝐵 ∈ ℤ → (𝐵 − 1) ∈ ℤ) | |
12 | uzid 12332 | . . . . 5 ⊢ ((𝐵 − 1) ∈ ℤ → (𝐵 − 1) ∈ (ℤ≥‘(𝐵 − 1))) | |
13 | peano2uz 12376 | . . . . 5 ⊢ ((𝐵 − 1) ∈ (ℤ≥‘(𝐵 − 1)) → ((𝐵 − 1) + 1) ∈ (ℤ≥‘(𝐵 − 1))) | |
14 | 10, 11, 12, 13 | 4syl 19 | . . . 4 ⊢ ((𝐴 ∈ ℤ ∧ 𝐵 ∈ (ℤ≥‘(𝐴 + 1))) → ((𝐵 − 1) + 1) ∈ (ℤ≥‘(𝐵 − 1))) |
15 | elfzuzb 12985 | . . . 4 ⊢ ((𝐵 − 1) ∈ (𝐴...((𝐵 − 1) + 1)) ↔ ((𝐵 − 1) ∈ (ℤ≥‘𝐴) ∧ ((𝐵 − 1) + 1) ∈ (ℤ≥‘(𝐵 − 1)))) | |
16 | 9, 14, 15 | sylanbrc 586 | . . 3 ⊢ ((𝐴 ∈ ℤ ∧ 𝐵 ∈ (ℤ≥‘(𝐴 + 1))) → (𝐵 − 1) ∈ (𝐴...((𝐵 − 1) + 1))) |
17 | fzosplit 13154 | . . 3 ⊢ ((𝐵 − 1) ∈ (𝐴...((𝐵 − 1) + 1)) → (𝐴..^((𝐵 − 1) + 1)) = ((𝐴..^(𝐵 − 1)) ∪ ((𝐵 − 1)..^((𝐵 − 1) + 1)))) | |
18 | 16, 17 | syl 17 | . 2 ⊢ ((𝐴 ∈ ℤ ∧ 𝐵 ∈ (ℤ≥‘(𝐴 + 1))) → (𝐴..^((𝐵 − 1) + 1)) = ((𝐴..^(𝐵 − 1)) ∪ ((𝐵 − 1)..^((𝐵 − 1) + 1)))) |
19 | 1, 11 | syl 17 | . . . . 5 ⊢ (𝐵 ∈ (ℤ≥‘(𝐴 + 1)) → (𝐵 − 1) ∈ ℤ) |
20 | 19 | adantl 485 | . . . 4 ⊢ ((𝐴 ∈ ℤ ∧ 𝐵 ∈ (ℤ≥‘(𝐴 + 1))) → (𝐵 − 1) ∈ ℤ) |
21 | fzosn 13192 | . . . 4 ⊢ ((𝐵 − 1) ∈ ℤ → ((𝐵 − 1)..^((𝐵 − 1) + 1)) = {(𝐵 − 1)}) | |
22 | 20, 21 | syl 17 | . . 3 ⊢ ((𝐴 ∈ ℤ ∧ 𝐵 ∈ (ℤ≥‘(𝐴 + 1))) → ((𝐵 − 1)..^((𝐵 − 1) + 1)) = {(𝐵 − 1)}) |
23 | 22 | uneq2d 4051 | . 2 ⊢ ((𝐴 ∈ ℤ ∧ 𝐵 ∈ (ℤ≥‘(𝐴 + 1))) → ((𝐴..^(𝐵 − 1)) ∪ ((𝐵 − 1)..^((𝐵 − 1) + 1))) = ((𝐴..^(𝐵 − 1)) ∪ {(𝐵 − 1)})) |
24 | 8, 18, 23 | 3eqtrd 2777 | 1 ⊢ ((𝐴 ∈ ℤ ∧ 𝐵 ∈ (ℤ≥‘(𝐴 + 1))) → (𝐴..^𝐵) = ((𝐴..^(𝐵 − 1)) ∪ {(𝐵 − 1)})) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 399 = wceq 1542 ∈ wcel 2113 ∪ cun 3839 {csn 4513 ‘cfv 6333 (class class class)co 7164 ℂcc 10606 1c1 10609 + caddc 10611 − cmin 10941 ℤcz 12055 ℤ≥cuz 12317 ...cfz 12974 ..^cfzo 13117 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1916 ax-6 1974 ax-7 2019 ax-8 2115 ax-9 2123 ax-10 2144 ax-11 2161 ax-12 2178 ax-ext 2710 ax-sep 5164 ax-nul 5171 ax-pow 5229 ax-pr 5293 ax-un 7473 ax-cnex 10664 ax-resscn 10665 ax-1cn 10666 ax-icn 10667 ax-addcl 10668 ax-addrcl 10669 ax-mulcl 10670 ax-mulrcl 10671 ax-mulcom 10672 ax-addass 10673 ax-mulass 10674 ax-distr 10675 ax-i2m1 10676 ax-1ne0 10677 ax-1rid 10678 ax-rnegex 10679 ax-rrecex 10680 ax-cnre 10681 ax-pre-lttri 10682 ax-pre-lttrn 10683 ax-pre-ltadd 10684 ax-pre-mulgt0 10685 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 847 df-3or 1089 df-3an 1090 df-tru 1545 df-fal 1555 df-ex 1787 df-nf 1791 df-sb 2074 df-mo 2540 df-eu 2570 df-clab 2717 df-cleq 2730 df-clel 2811 df-nfc 2881 df-ne 2935 df-nel 3039 df-ral 3058 df-rex 3059 df-reu 3060 df-rab 3062 df-v 3399 df-sbc 3680 df-csb 3789 df-dif 3844 df-un 3846 df-in 3848 df-ss 3858 df-pss 3860 df-nul 4210 df-if 4412 df-pw 4487 df-sn 4514 df-pr 4516 df-tp 4518 df-op 4520 df-uni 4794 df-iun 4880 df-br 5028 df-opab 5090 df-mpt 5108 df-tr 5134 df-id 5425 df-eprel 5430 df-po 5438 df-so 5439 df-fr 5478 df-we 5480 df-xp 5525 df-rel 5526 df-cnv 5527 df-co 5528 df-dm 5529 df-rn 5530 df-res 5531 df-ima 5532 df-pred 6123 df-ord 6169 df-on 6170 df-lim 6171 df-suc 6172 df-iota 6291 df-fun 6335 df-fn 6336 df-f 6337 df-f1 6338 df-fo 6339 df-f1o 6340 df-fv 6341 df-riota 7121 df-ov 7167 df-oprab 7168 df-mpo 7169 df-om 7594 df-1st 7707 df-2nd 7708 df-wrecs 7969 df-recs 8030 df-rdg 8068 df-er 8313 df-en 8549 df-dom 8550 df-sdom 8551 df-pnf 10748 df-mnf 10749 df-xr 10750 df-ltxr 10751 df-le 10752 df-sub 10943 df-neg 10944 df-nn 11710 df-n0 11970 df-z 12056 df-uz 12318 df-fz 12975 df-fzo 13118 |
This theorem is referenced by: elfzonlteqm1 13197 pthdlem1 27699 clwwlkccatlem 27918 cycpmco2lem7 30968 cycpmrn 30979 |
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