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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 12479 | . . . . 5 ⊢ (𝐷 ∈ ℤ → 𝐷 ∈ ℝ) | |
| 2 | elfzoelz 13561 | . . . . . . 7 ⊢ (𝐴 ∈ (𝐵..^𝐶) → 𝐴 ∈ ℤ) | |
| 3 | 2 | adantr 480 | . . . . . 6 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → 𝐴 ∈ ℤ) |
| 4 | 3 | zred 12583 | . . . . 5 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → 𝐴 ∈ ℝ) |
| 5 | lelttric 11227 | . . . . 5 ⊢ ((𝐷 ∈ ℝ ∧ 𝐴 ∈ ℝ) → (𝐷 ≤ 𝐴 ∨ 𝐴 < 𝐷)) | |
| 6 | 1, 4, 5 | syl2an2 686 | . . . 4 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → (𝐷 ≤ 𝐴 ∨ 𝐴 < 𝐷)) |
| 7 | 6 | orcomd 871 | . . 3 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → (𝐴 < 𝐷 ∨ 𝐷 ≤ 𝐴)) |
| 8 | elfzole1 13569 | . . . . . . 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 13570 | . . . . . . 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 966 | . . 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 13559 | . . . . 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 13563 | . . . 4 ⊢ ((𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ ∧ 𝐷 ∈ ℤ) → (𝐴 ∈ (𝐵..^𝐷) ↔ (𝐵 ≤ 𝐴 ∧ 𝐴 < 𝐷))) | |
| 22 | 3, 19, 20, 21 | syl3anc 1373 | . . 3 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → (𝐴 ∈ (𝐵..^𝐷) ↔ (𝐵 ≤ 𝐴 ∧ 𝐴 < 𝐷))) |
| 23 | elfzoel2 13560 | . . . . 5 ⊢ (𝐴 ∈ (𝐵..^𝐶) → 𝐶 ∈ ℤ) | |
| 24 | 23 | adantr 480 | . . . 4 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → 𝐶 ∈ ℤ) |
| 25 | elfzo 13563 | . . . 4 ⊢ ((𝐴 ∈ ℤ ∧ 𝐷 ∈ ℤ ∧ 𝐶 ∈ ℤ) → (𝐴 ∈ (𝐷..^𝐶) ↔ (𝐷 ≤ 𝐴 ∧ 𝐴 < 𝐶))) | |
| 26 | 3, 20, 24, 25 | syl3anc 1373 | . . 3 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → (𝐴 ∈ (𝐷..^𝐶) ↔ (𝐷 ≤ 𝐴 ∧ 𝐴 < 𝐶))) |
| 27 | 22, 26 | orbi12d 918 | . 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 847 ∈ wcel 2113 class class class wbr 5093 (class class class)co 7352 ℝcr 11012 < clt 11153 ≤ cle 11154 ℤcz 12475 ..^cfzo 13556 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2182 ax-ext 2705 ax-sep 5236 ax-nul 5246 ax-pow 5305 ax-pr 5372 ax-un 7674 ax-cnex 11069 ax-resscn 11070 ax-1cn 11071 ax-icn 11072 ax-addcl 11073 ax-addrcl 11074 ax-mulcl 11075 ax-mulrcl 11076 ax-mulcom 11077 ax-addass 11078 ax-mulass 11079 ax-distr 11080 ax-i2m1 11081 ax-1ne0 11082 ax-1rid 11083 ax-rnegex 11084 ax-rrecex 11085 ax-cnre 11086 ax-pre-lttri 11087 ax-pre-lttrn 11088 ax-pre-ltadd 11089 ax-pre-mulgt0 11090 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2537 df-eu 2566 df-clab 2712 df-cleq 2725 df-clel 2808 df-nfc 2882 df-ne 2930 df-nel 3034 df-ral 3049 df-rex 3058 df-reu 3348 df-rab 3397 df-v 3439 df-sbc 3738 df-csb 3847 df-dif 3901 df-un 3903 df-in 3905 df-ss 3915 df-pss 3918 df-nul 4283 df-if 4475 df-pw 4551 df-sn 4576 df-pr 4578 df-op 4582 df-uni 4859 df-iun 4943 df-br 5094 df-opab 5156 df-mpt 5175 df-tr 5201 df-id 5514 df-eprel 5519 df-po 5527 df-so 5528 df-fr 5572 df-we 5574 df-xp 5625 df-rel 5626 df-cnv 5627 df-co 5628 df-dm 5629 df-rn 5630 df-res 5631 df-ima 5632 df-pred 6253 df-ord 6314 df-on 6315 df-lim 6316 df-suc 6317 df-iota 6442 df-fun 6488 df-fn 6489 df-f 6490 df-f1 6491 df-fo 6492 df-f1o 6493 df-fv 6494 df-riota 7309 df-ov 7355 df-oprab 7356 df-mpo 7357 df-om 7803 df-1st 7927 df-2nd 7928 df-frecs 8217 df-wrecs 8248 df-recs 8297 df-rdg 8335 df-er 8628 df-en 8876 df-dom 8877 df-sdom 8878 df-pnf 11155 df-mnf 11156 df-xr 11157 df-ltxr 11158 df-le 11159 df-sub 11353 df-neg 11354 df-nn 12133 df-n0 12389 df-z 12476 df-uz 12739 df-fz 13410 df-fzo 13557 |
| This theorem is referenced by: fzosplit 13594 fzocatel 13631 ccatass 14498 ccatswrd 14578 ccatpfx 14610 revccat 14675 ccatco 14744 dfphi2 16687 prmgaplem7 16971 chnccat 18534 ccatf1 32937 cycpmco2 33109 gpgedgvtx1 48186 |
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