| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > ILE Home > Th. List > fzospliti | 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 | simpr 110 | . . . . 5 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → 𝐷 ∈ ℤ) | |
| 2 | elfzoelz 10276 | . . . . . 6 ⊢ (𝐴 ∈ (𝐵..^𝐶) → 𝐴 ∈ ℤ) | |
| 3 | 2 | adantr 276 | . . . . 5 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → 𝐴 ∈ ℤ) |
| 4 | zlelttric 9424 | . . . . 5 ⊢ ((𝐷 ∈ ℤ ∧ 𝐴 ∈ ℤ) → (𝐷 ≤ 𝐴 ∨ 𝐴 < 𝐷)) | |
| 5 | 1, 3, 4 | syl2anc 411 | . . . 4 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → (𝐷 ≤ 𝐴 ∨ 𝐴 < 𝐷)) |
| 6 | 5 | orcomd 731 | . . 3 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → (𝐴 < 𝐷 ∨ 𝐷 ≤ 𝐴)) |
| 7 | elfzole1 10285 | . . . . . . 7 ⊢ (𝐴 ∈ (𝐵..^𝐶) → 𝐵 ≤ 𝐴) | |
| 8 | 7 | adantr 276 | . . . . . 6 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → 𝐵 ≤ 𝐴) |
| 9 | 8 | a1d 22 | . . . . 5 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → (𝐴 < 𝐷 → 𝐵 ≤ 𝐴)) |
| 10 | 9 | ancrd 326 | . . . 4 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → (𝐴 < 𝐷 → (𝐵 ≤ 𝐴 ∧ 𝐴 < 𝐷))) |
| 11 | elfzolt2 10286 | . . . . . . 7 ⊢ (𝐴 ∈ (𝐵..^𝐶) → 𝐴 < 𝐶) | |
| 12 | 11 | adantr 276 | . . . . . 6 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → 𝐴 < 𝐶) |
| 13 | 12 | a1d 22 | . . . . 5 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → (𝐷 ≤ 𝐴 → 𝐴 < 𝐶)) |
| 14 | 13 | ancld 325 | . . . 4 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → (𝐷 ≤ 𝐴 → (𝐷 ≤ 𝐴 ∧ 𝐴 < 𝐶))) |
| 15 | 10, 14 | orim12d 788 | . . 3 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → ((𝐴 < 𝐷 ∨ 𝐷 ≤ 𝐴) → ((𝐵 ≤ 𝐴 ∧ 𝐴 < 𝐷) ∨ (𝐷 ≤ 𝐴 ∧ 𝐴 < 𝐶)))) |
| 16 | 6, 15 | mpd 13 | . 2 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → ((𝐵 ≤ 𝐴 ∧ 𝐴 < 𝐷) ∨ (𝐷 ≤ 𝐴 ∧ 𝐴 < 𝐶))) |
| 17 | elfzoel1 10274 | . . . . 5 ⊢ (𝐴 ∈ (𝐵..^𝐶) → 𝐵 ∈ ℤ) | |
| 18 | 17 | adantr 276 | . . . 4 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → 𝐵 ∈ ℤ) |
| 19 | elfzo 10278 | . . . 4 ⊢ ((𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ ∧ 𝐷 ∈ ℤ) → (𝐴 ∈ (𝐵..^𝐷) ↔ (𝐵 ≤ 𝐴 ∧ 𝐴 < 𝐷))) | |
| 20 | 3, 18, 1, 19 | syl3anc 1250 | . . 3 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → (𝐴 ∈ (𝐵..^𝐷) ↔ (𝐵 ≤ 𝐴 ∧ 𝐴 < 𝐷))) |
| 21 | elfzoel2 10275 | . . . . 5 ⊢ (𝐴 ∈ (𝐵..^𝐶) → 𝐶 ∈ ℤ) | |
| 22 | 21 | adantr 276 | . . . 4 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → 𝐶 ∈ ℤ) |
| 23 | elfzo 10278 | . . . 4 ⊢ ((𝐴 ∈ ℤ ∧ 𝐷 ∈ ℤ ∧ 𝐶 ∈ ℤ) → (𝐴 ∈ (𝐷..^𝐶) ↔ (𝐷 ≤ 𝐴 ∧ 𝐴 < 𝐶))) | |
| 24 | 3, 1, 22, 23 | syl3anc 1250 | . . 3 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → (𝐴 ∈ (𝐷..^𝐶) ↔ (𝐷 ≤ 𝐴 ∧ 𝐴 < 𝐶))) |
| 25 | 20, 24 | orbi12d 795 | . 2 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → ((𝐴 ∈ (𝐵..^𝐷) ∨ 𝐴 ∈ (𝐷..^𝐶)) ↔ ((𝐵 ≤ 𝐴 ∧ 𝐴 < 𝐷) ∨ (𝐷 ≤ 𝐴 ∧ 𝐴 < 𝐶)))) |
| 26 | 16, 25 | mpbird 167 | 1 ⊢ ((𝐴 ∈ (𝐵..^𝐶) ∧ 𝐷 ∈ ℤ) → (𝐴 ∈ (𝐵..^𝐷) ∨ 𝐴 ∈ (𝐷..^𝐶))) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 ↔ wb 105 ∨ wo 710 ∈ wcel 2177 class class class wbr 4047 (class class class)co 5951 < clt 8114 ≤ cle 8115 ℤcz 9379 ..^cfzo 10271 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 615 ax-in2 616 ax-io 711 ax-5 1471 ax-7 1472 ax-gen 1473 ax-ie1 1517 ax-ie2 1518 ax-8 1528 ax-10 1529 ax-11 1530 ax-i12 1531 ax-bndl 1533 ax-4 1534 ax-17 1550 ax-i9 1554 ax-ial 1558 ax-i5r 1559 ax-13 2179 ax-14 2180 ax-ext 2188 ax-sep 4166 ax-pow 4222 ax-pr 4257 ax-un 4484 ax-setind 4589 ax-cnex 8023 ax-resscn 8024 ax-1cn 8025 ax-1re 8026 ax-icn 8027 ax-addcl 8028 ax-addrcl 8029 ax-mulcl 8030 ax-addcom 8032 ax-addass 8034 ax-distr 8036 ax-i2m1 8037 ax-0lt1 8038 ax-0id 8040 ax-rnegex 8041 ax-cnre 8043 ax-pre-ltirr 8044 ax-pre-ltwlin 8045 ax-pre-lttrn 8046 ax-pre-ltadd 8048 |
| This theorem depends on definitions: df-bi 117 df-3or 982 df-3an 983 df-tru 1376 df-fal 1379 df-nf 1485 df-sb 1787 df-eu 2058 df-mo 2059 df-clab 2193 df-cleq 2199 df-clel 2202 df-nfc 2338 df-ne 2378 df-nel 2473 df-ral 2490 df-rex 2491 df-reu 2492 df-rab 2494 df-v 2775 df-sbc 3000 df-csb 3095 df-dif 3169 df-un 3171 df-in 3173 df-ss 3180 df-pw 3619 df-sn 3640 df-pr 3641 df-op 3643 df-uni 3853 df-int 3888 df-iun 3931 df-br 4048 df-opab 4110 df-mpt 4111 df-id 4344 df-xp 4685 df-rel 4686 df-cnv 4687 df-co 4688 df-dm 4689 df-rn 4690 df-res 4691 df-ima 4692 df-iota 5237 df-fun 5278 df-fn 5279 df-f 5280 df-fv 5284 df-riota 5906 df-ov 5954 df-oprab 5955 df-mpo 5956 df-1st 6233 df-2nd 6234 df-pnf 8116 df-mnf 8117 df-xr 8118 df-ltxr 8119 df-le 8120 df-sub 8252 df-neg 8253 df-inn 9044 df-n0 9303 df-z 9380 df-uz 9656 df-fz 10138 df-fzo 10272 |
| This theorem is referenced by: fzosplit 10308 fzocatel 10335 ccatass 11072 ccatswrd 11131 ccatpfx 11160 dfphi2 12586 |
| Copyright terms: Public domain | W3C validator |