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| Mirrors > Home > MPE Home > Th. List > iooneg | Structured version Visualization version GIF version | ||
| Description: Membership in a negated open real interval. (Contributed by Paul Chapman, 26-Nov-2007.) |
| Ref | Expression |
|---|---|
| iooneg | ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (𝐶 ∈ (𝐴(,)𝐵) ↔ -𝐶 ∈ ( -𝐵(,) -𝐴))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ltneg 11843 | . . . . 5 ⊢ ((𝐴 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (𝐴 < 𝐶 ↔ -𝐶 < -𝐴)) | |
| 2 | 1 | 3adant2 1149 | . . . 4 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (𝐴 < 𝐶 ↔ -𝐶 < -𝐴)) |
| 3 | ltneg 11843 | . . . . . 6 ⊢ ((𝐶 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐶 < 𝐵 ↔ -𝐵 < -𝐶)) | |
| 4 | 3 | ancoms 464 | . . . . 5 ⊢ ((𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (𝐶 < 𝐵 ↔ -𝐵 < -𝐶)) |
| 5 | 4 | 3adant1 1148 | . . . 4 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (𝐶 < 𝐵 ↔ -𝐵 < -𝐶)) |
| 6 | 2, 5 | anbi12d 644 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → ((𝐴 < 𝐶 ∧ 𝐶 < 𝐵) ↔ ( -𝐶 < -𝐴 ∧ -𝐵 < -𝐶))) |
| 7 | 6 | biancomd 469 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → ((𝐴 < 𝐶 ∧ 𝐶 < 𝐵) ↔ ( -𝐵 < -𝐶 ∧ -𝐶 < -𝐴))) |
| 8 | rexr 11382 | . . 3 ⊢ (𝐴 ∈ ℝ → 𝐴 ∈ ℝ*) | |
| 9 | rexr 11382 | . . 3 ⊢ (𝐵 ∈ ℝ → 𝐵 ∈ ℝ*) | |
| 10 | rexr 11382 | . . 3 ⊢ (𝐶 ∈ ℝ → 𝐶 ∈ ℝ*) | |
| 11 | elioo5 13561 | . . 3 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ* ∧ 𝐶 ∈ ℝ*) → (𝐶 ∈ (𝐴(,)𝐵) ↔ (𝐴 < 𝐶 ∧ 𝐶 < 𝐵))) | |
| 12 | 8, 9, 10, 11 | syl3an 1178 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (𝐶 ∈ (𝐴(,)𝐵) ↔ (𝐴 < 𝐶 ∧ 𝐶 < 𝐵))) |
| 13 | renegcl 11648 | . . . 4 ⊢ (𝐵 ∈ ℝ → -𝐵 ∈ ℝ) | |
| 14 | renegcl 11648 | . . . 4 ⊢ (𝐴 ∈ ℝ → -𝐴 ∈ ℝ) | |
| 15 | renegcl 11648 | . . . 4 ⊢ (𝐶 ∈ ℝ → -𝐶 ∈ ℝ) | |
| 16 | rexr 11382 | . . . . 5 ⊢ ( -𝐵 ∈ ℝ → -𝐵 ∈ ℝ*) | |
| 17 | rexr 11382 | . . . . 5 ⊢ ( -𝐴 ∈ ℝ → -𝐴 ∈ ℝ*) | |
| 18 | rexr 11382 | . . . . 5 ⊢ ( -𝐶 ∈ ℝ → -𝐶 ∈ ℝ*) | |
| 19 | elioo5 13561 | . . . . 5 ⊢ (( -𝐵 ∈ ℝ* ∧ -𝐴 ∈ ℝ* ∧ -𝐶 ∈ ℝ*) → ( -𝐶 ∈ ( -𝐵(,) -𝐴) ↔ ( -𝐵 < -𝐶 ∧ -𝐶 < -𝐴))) | |
| 20 | 16, 17, 18, 19 | syl3an 1178 | . . . 4 ⊢ (( -𝐵 ∈ ℝ ∧ -𝐴 ∈ ℝ ∧ -𝐶 ∈ ℝ) → ( -𝐶 ∈ ( -𝐵(,) -𝐴) ↔ ( -𝐵 < -𝐶 ∧ -𝐶 < -𝐴))) |
| 21 | 13, 14, 15, 20 | syl3an 1178 | . . 3 ⊢ ((𝐵 ∈ ℝ ∧ 𝐴 ∈ ℝ ∧ 𝐶 ∈ ℝ) → ( -𝐶 ∈ ( -𝐵(,) -𝐴) ↔ ( -𝐵 < -𝐶 ∧ -𝐶 < -𝐴))) |
| 22 | 21 | 3com12 1141 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → ( -𝐶 ∈ ( -𝐵(,) -𝐴) ↔ ( -𝐵 < -𝐶 ∧ -𝐶 < -𝐴))) |
| 23 | 7, 12, 22 | 3bitr4d 314 | 1 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (𝐶 ∈ (𝐴(,)𝐵) ↔ -𝐶 ∈ ( -𝐵(,) -𝐴))) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 401 ∧ w3a 1103 ∈ wcel 2147 class class class wbr 5106 (class class class)co 7443 ℝcr 11226 ℝ*cxr 11369 < clt 11370 -cneg 11569 (,)cioo 13503 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-sep 5252 ax-nul 5263 ax-pow 5331 ax-pr 5395 ax-un 7775 ax-cnex 11283 ax-resscn 11284 ax-1cn 11285 ax-icn 11286 ax-addcl 11287 ax-addrcl 11288 ax-mulcl 11289 ax-mulrcl 11290 ax-mulcom 11291 ax-addass 11292 ax-mulass 11293 ax-distr 11294 ax-i2m1 11295 ax-1ne0 11296 ax-1rid 11297 ax-rnegex 11298 ax-rrecex 11299 ax-cnre 11300 ax-pre-lttri 11301 ax-pre-lttrn 11302 ax-pre-ltadd 11303 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-nel 3066 df-ral 3081 df-rex 3091 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4839 df-uni 4871 df-br 5107 df-opab 5171 df-mpt 5190 df-id 5550 df-po 5563 df-so 5564 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-iota 6512 df-fun 6560 df-fn 6561 df-f 6562 df-f1 6563 df-fo 6564 df-f1o 6565 df-fv 6566 df-riota 7400 df-ov 7446 df-oprab 7447 df-mpo 7448 df-er 8745 df-en 9002 df-dom 9003 df-sdom 9004 df-pnf 11372 df-mnf 11373 df-xr 11374 df-ltxr 11375 df-le 11376 df-sub 11570 df-neg 11571 df-ioo 13507 |
| This theorem is used by: lhop2 26365 asinsin 27250 atanlogsub 27274 atanbnd 27284 |
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