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| Mirrors > Home > MPE Home > Th. List > fzospliti | Structured version Visualization version GIF version | ||
| Description: One direction of splitting a half-open integer range in half. (Contributed by Stefan O'Rear, 14-Aug-2015.) |
| Ref | Expression |
|---|---|
| fzospliti | ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → (𝐴 ∈ (𝐵..^𝐷) ∨ 𝐴 ∈ (𝐷..^𝐶))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | zre 12528 | . . . . 5 ⊢ (𝐷 ∈ ℤ → 𝐷 ∈ ℝ) | |
| 2 | elfzoelz 13613 | . . . . . . 7 ⊢ (𝐴 ∈ (𝐵..^𝐶) → 𝐴 ∈ ℤ) | |
| 3 | 2 | adantr 480 | . . . . . 6 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → 𝐴 ∈ ℤ) |
| 4 | 3 | zred 12633 | . . . . 5 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → 𝐴 ∈ ℝ) |
| 5 | lelttric 11253 | . . . . 5 ⊢ ((𝐷 ∈ ℝ ∧ 𝐴 ∈ ℝ) → (𝐷 ≤ 𝐴 ∨ 𝐴 < 𝐷)) | |
| 6 | 1, 4, 5 | syl2an2 687 | . . . 4 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → (𝐷 ≤ 𝐴 ∨ 𝐴 < 𝐷)) |
| 7 | 6 | orcomd 872 | . . 3 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → (𝐴 < 𝐷 ∨ 𝐷 ≤ 𝐴)) |
| 8 | elfzole1 13622 | . . . . . . 7 ⊢ (𝐴 ∈ (𝐵..^𝐶) → 𝐵 ≤ 𝐴) | |
| 9 | 8 | adantr 480 | . . . . . 6 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → 𝐵 ≤ 𝐴) |
| 10 | 9 | a1d 25 | . . . . 5 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → (𝐴 < 𝐷 → 𝐵 ≤ 𝐴)) |
| 11 | 10 | ancrd 551 | . . . 4 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → (𝐴 < 𝐷 → (𝐵 ≤ 𝐴 ∧ 𝐴 < 𝐷))) |
| 12 | elfzolt2 13623 | . . . . . . 7 ⊢ (𝐴 ∈ (𝐵..^𝐶) → 𝐴 < 𝐶) | |
| 13 | 12 | adantr 480 | . . . . . 6 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → 𝐴 < 𝐶) |
| 14 | 13 | a1d 25 | . . . . 5 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → (𝐷 ≤ 𝐴 → 𝐴 < 𝐶)) |
| 15 | 14 | ancld 550 | . . . 4 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → (𝐷 ≤ 𝐴 → (𝐷 ≤ 𝐴 ∧ 𝐴 < 𝐶))) |
| 16 | 11, 15 | orim12d 967 | . . 3 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → ((𝐴 < 𝐷 ∨ 𝐷 ≤ 𝐴) → ((𝐵 ≤ 𝐴 ∧ 𝐴 < 𝐷) ∨ (𝐷 ≤ 𝐴 ∧ 𝐴 < 𝐶)))) |
| 17 | 7, 16 | mpd 15 | . 2 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → ((𝐵 ≤ 𝐴 ∧ 𝐴 < 𝐷) ∨ (𝐷 ≤ 𝐴 ∧ 𝐴 < 𝐶))) |
| 18 | elfzoel1 13611 | . . . . 5 ⊢ (𝐴 ∈ (𝐵..^𝐶) → 𝐵 ∈ ℤ) | |
| 19 | 18 | adantr 480 | . . . 4 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → 𝐵 ∈ ℤ) |
| 20 | simpr 484 | . . . 4 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → 𝐷 ∈ ℤ) | |
| 21 | elfzo 13615 | . . . 4 ⊢ ((𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ ∧ 𝐷 ∈ ℤ) → (𝐴 ∈ (𝐵..^𝐷) ↔ (𝐵 ≤ 𝐴 ∧ 𝐴 < 𝐷))) | |
| 22 | 3, 19, 20, 21 | syl3anc 1374 | . . 3 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → (𝐴 ∈ (𝐵..^𝐷) ↔ (𝐵 ≤ 𝐴 ∧ 𝐴 < 𝐷))) |
| 23 | elfzoel2 13612 | . . . . 5 ⊢ (𝐴 ∈ (𝐵..^𝐶) → 𝐶 ∈ ℤ) | |
| 24 | 23 | adantr 480 | . . . 4 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → 𝐶 ∈ ℤ) |
| 25 | elfzo 13615 | . . . 4 ⊢ ((𝐴 ∈ ℤ ∧ 𝐷 ∈ ℤ ∧ 𝐶 ∈ ℤ) → (𝐴 ∈ (𝐷..^𝐶) ↔ (𝐷 ≤ 𝐴 ∧ 𝐴 < 𝐶))) | |
| 26 | 3, 20, 24, 25 | syl3anc 1374 | . . 3 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → (𝐴 ∈ (𝐷..^𝐶) ↔ (𝐷 ≤ 𝐴 ∧ 𝐴 < 𝐶))) |
| 27 | 22, 26 | orbi12d 919 | . 2 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → ((𝐴 ∈ (𝐵..^𝐷) ∨ 𝐴 ∈ (𝐷..^𝐶)) ↔ ((𝐵 ≤ 𝐴 ∧ 𝐴 < 𝐷) ∨ (𝐷 ≤ 𝐴 ∧ 𝐴 < 𝐶)))) |
| 28 | 17, 27 | mpbird 257 | 1 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → (𝐴 ∈ (𝐵..^𝐷) ∨ 𝐴 ∈ (𝐷..^𝐶))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 ∨ wo 848 ∈ wcel 2114 class class class wbr 5085 (class class class)co 7367 ℝcr 11037 < clt 11179 ≤ cle 11180 ℤcz 12524 ..^cfzo 13608 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2708 ax-sep 5231 ax-nul 5241 ax-pow 5307 ax-pr 5375 ax-un 7689 ax-cnex 11094 ax-resscn 11095 ax-1cn 11096 ax-icn 11097 ax-addcl 11098 ax-addrcl 11099 ax-mulcl 11100 ax-mulrcl 11101 ax-mulcom 11102 ax-addass 11103 ax-mulass 11104 ax-distr 11105 ax-i2m1 11106 ax-1ne0 11107 ax-1rid 11108 ax-rnegex 11109 ax-rrecex 11110 ax-cnre 11111 ax-pre-lttri 11112 ax-pre-lttrn 11113 ax-pre-ltadd 11114 ax-pre-mulgt0 11115 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-nel 3037 df-ral 3052 df-rex 3062 df-reu 3343 df-rab 3390 df-v 3431 df-sbc 3729 df-csb 3838 df-dif 3892 df-un 3894 df-in 3896 df-ss 3906 df-pss 3909 df-nul 4274 df-if 4467 df-pw 4543 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4851 df-iun 4935 df-br 5086 df-opab 5148 df-mpt 5167 df-tr 5193 df-id 5526 df-eprel 5531 df-po 5539 df-so 5540 df-fr 5584 df-we 5586 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-pred 6265 df-ord 6326 df-on 6327 df-lim 6328 df-suc 6329 df-iota 6454 df-fun 6500 df-fn 6501 df-f 6502 df-f1 6503 df-fo 6504 df-f1o 6505 df-fv 6506 df-riota 7324 df-ov 7370 df-oprab 7371 df-mpo 7372 df-om 7818 df-1st 7942 df-2nd 7943 df-frecs 8231 df-wrecs 8262 df-recs 8311 df-rdg 8349 df-er 8643 df-en 8894 df-dom 8895 df-sdom 8896 df-pnf 11181 df-mnf 11182 df-xr 11183 df-ltxr 11184 df-le 11185 df-sub 11379 df-neg 11380 df-nn 12175 df-n0 12438 df-z 12525 df-uz 12789 df-fz 13462 df-fzo 13609 |
| This theorem is referenced by: fzosplit 13647 fzocatel 13684 ccatass 14551 ccatswrd 14631 ccatpfx 14663 revccat 14728 ccatco 14797 dfphi2 16744 prmgaplem7 17028 chnccat 18592 ccatf1 33009 cycpmco2 33194 gpgedgvtx1 48538 |
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