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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 12533 | . . . . 5 ⊢ (𝐷 ∈ ℤ → 𝐷 ∈ ℝ) | |
| 2 | elfzoelz 13620 | . . . . . . 7 ⊢ (𝐴 ∈ (𝐵..^𝐶) → 𝐴 ∈ ℤ) | |
| 3 | 2 | adantr 480 | . . . . . 6 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → 𝐴 ∈ ℤ) |
| 4 | 3 | zred 12638 | . . . . 5 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → 𝐴 ∈ ℝ) |
| 5 | lelttric 11281 | . . . . 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 13628 | . . . . . . 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 13629 | . . . . . . 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 13618 | . . . . 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 13622 | . . . 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 13619 | . . . . 5 ⊢ (𝐴 ∈ (𝐵..^𝐶) → 𝐶 ∈ ℤ) | |
| 24 | 23 | adantr 480 | . . . 4 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → 𝐶 ∈ ℤ) |
| 25 | elfzo 13622 | . . . 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 2109 class class class wbr 5107 (class class class)co 7387 ℝcr 11067 < clt 11208 ≤ cle 11209 ℤcz 12529 ..^cfzo 13615 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-sep 5251 ax-nul 5261 ax-pow 5320 ax-pr 5387 ax-un 7711 ax-cnex 11124 ax-resscn 11125 ax-1cn 11126 ax-icn 11127 ax-addcl 11128 ax-addrcl 11129 ax-mulcl 11130 ax-mulrcl 11131 ax-mulcom 11132 ax-addass 11133 ax-mulass 11134 ax-distr 11135 ax-i2m1 11136 ax-1ne0 11137 ax-1rid 11138 ax-rnegex 11139 ax-rrecex 11140 ax-cnre 11141 ax-pre-lttri 11142 ax-pre-lttrn 11143 ax-pre-ltadd 11144 ax-pre-mulgt0 11145 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ne 2926 df-nel 3030 df-ral 3045 df-rex 3054 df-reu 3355 df-rab 3406 df-v 3449 df-sbc 3754 df-csb 3863 df-dif 3917 df-un 3919 df-in 3921 df-ss 3931 df-pss 3934 df-nul 4297 df-if 4489 df-pw 4565 df-sn 4590 df-pr 4592 df-op 4596 df-uni 4872 df-iun 4957 df-br 5108 df-opab 5170 df-mpt 5189 df-tr 5215 df-id 5533 df-eprel 5538 df-po 5546 df-so 5547 df-fr 5591 df-we 5593 df-xp 5644 df-rel 5645 df-cnv 5646 df-co 5647 df-dm 5648 df-rn 5649 df-res 5650 df-ima 5651 df-pred 6274 df-ord 6335 df-on 6336 df-lim 6337 df-suc 6338 df-iota 6464 df-fun 6513 df-fn 6514 df-f 6515 df-f1 6516 df-fo 6517 df-f1o 6518 df-fv 6519 df-riota 7344 df-ov 7390 df-oprab 7391 df-mpo 7392 df-om 7843 df-1st 7968 df-2nd 7969 df-frecs 8260 df-wrecs 8291 df-recs 8340 df-rdg 8378 df-er 8671 df-en 8919 df-dom 8920 df-sdom 8921 df-pnf 11210 df-mnf 11211 df-xr 11212 df-ltxr 11213 df-le 11214 df-sub 11407 df-neg 11408 df-nn 12187 df-n0 12443 df-z 12530 df-uz 12794 df-fz 13469 df-fzo 13616 |
| This theorem is referenced by: fzosplit 13653 fzocatel 13690 ccatass 14553 ccatswrd 14633 ccatpfx 14666 revccat 14731 ccatco 14801 dfphi2 16744 prmgaplem7 17028 ccatf1 32870 cycpmco2 33090 gpgedgvtx1 48053 |
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