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Mirrors > Home > MPE Home > Th. List > iccneg | Structured version Visualization version GIF version |
Description: Membership in a negated closed real interval. (Contributed by Paul Chapman, 26-Nov-2007.) |
Ref | Expression |
---|---|
iccneg | ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (𝐶 ∈ (𝐴[,]𝐵) ↔ -𝐶 ∈ (-𝐵[,]-𝐴))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | renegcl 10951 | . . . . 5 ⊢ (𝐶 ∈ ℝ → -𝐶 ∈ ℝ) | |
2 | ax-1 6 | . . . . 5 ⊢ (𝐶 ∈ ℝ → (-𝐶 ∈ ℝ → 𝐶 ∈ ℝ)) | |
3 | 1, 2 | impbid2 228 | . . . 4 ⊢ (𝐶 ∈ ℝ → (𝐶 ∈ ℝ ↔ -𝐶 ∈ ℝ)) |
4 | 3 | 3ad2ant3 1131 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (𝐶 ∈ ℝ ↔ -𝐶 ∈ ℝ)) |
5 | ancom 463 | . . . 4 ⊢ ((𝐶 ≤ 𝐵 ∧ 𝐴 ≤ 𝐶) ↔ (𝐴 ≤ 𝐶 ∧ 𝐶 ≤ 𝐵)) | |
6 | leneg 11145 | . . . . . . 7 ⊢ ((𝐶 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐶 ≤ 𝐵 ↔ -𝐵 ≤ -𝐶)) | |
7 | 6 | ancoms 461 | . . . . . 6 ⊢ ((𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (𝐶 ≤ 𝐵 ↔ -𝐵 ≤ -𝐶)) |
8 | 7 | 3adant1 1126 | . . . . 5 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (𝐶 ≤ 𝐵 ↔ -𝐵 ≤ -𝐶)) |
9 | leneg 11145 | . . . . . 6 ⊢ ((𝐴 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (𝐴 ≤ 𝐶 ↔ -𝐶 ≤ -𝐴)) | |
10 | 9 | 3adant2 1127 | . . . . 5 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (𝐴 ≤ 𝐶 ↔ -𝐶 ≤ -𝐴)) |
11 | 8, 10 | anbi12d 632 | . . . 4 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → ((𝐶 ≤ 𝐵 ∧ 𝐴 ≤ 𝐶) ↔ (-𝐵 ≤ -𝐶 ∧ -𝐶 ≤ -𝐴))) |
12 | 5, 11 | syl5bbr 287 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → ((𝐴 ≤ 𝐶 ∧ 𝐶 ≤ 𝐵) ↔ (-𝐵 ≤ -𝐶 ∧ -𝐶 ≤ -𝐴))) |
13 | 4, 12 | anbi12d 632 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → ((𝐶 ∈ ℝ ∧ (𝐴 ≤ 𝐶 ∧ 𝐶 ≤ 𝐵)) ↔ (-𝐶 ∈ ℝ ∧ (-𝐵 ≤ -𝐶 ∧ -𝐶 ≤ -𝐴)))) |
14 | elicc2 12804 | . . . 4 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐶 ∈ (𝐴[,]𝐵) ↔ (𝐶 ∈ ℝ ∧ 𝐴 ≤ 𝐶 ∧ 𝐶 ≤ 𝐵))) | |
15 | 14 | 3adant3 1128 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (𝐶 ∈ (𝐴[,]𝐵) ↔ (𝐶 ∈ ℝ ∧ 𝐴 ≤ 𝐶 ∧ 𝐶 ≤ 𝐵))) |
16 | 3anass 1091 | . . 3 ⊢ ((𝐶 ∈ ℝ ∧ 𝐴 ≤ 𝐶 ∧ 𝐶 ≤ 𝐵) ↔ (𝐶 ∈ ℝ ∧ (𝐴 ≤ 𝐶 ∧ 𝐶 ≤ 𝐵))) | |
17 | 15, 16 | syl6bb 289 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (𝐶 ∈ (𝐴[,]𝐵) ↔ (𝐶 ∈ ℝ ∧ (𝐴 ≤ 𝐶 ∧ 𝐶 ≤ 𝐵)))) |
18 | renegcl 10951 | . . . . 5 ⊢ (𝐵 ∈ ℝ → -𝐵 ∈ ℝ) | |
19 | renegcl 10951 | . . . . 5 ⊢ (𝐴 ∈ ℝ → -𝐴 ∈ ℝ) | |
20 | elicc2 12804 | . . . . 5 ⊢ ((-𝐵 ∈ ℝ ∧ -𝐴 ∈ ℝ) → (-𝐶 ∈ (-𝐵[,]-𝐴) ↔ (-𝐶 ∈ ℝ ∧ -𝐵 ≤ -𝐶 ∧ -𝐶 ≤ -𝐴))) | |
21 | 18, 19, 20 | syl2anr 598 | . . . 4 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (-𝐶 ∈ (-𝐵[,]-𝐴) ↔ (-𝐶 ∈ ℝ ∧ -𝐵 ≤ -𝐶 ∧ -𝐶 ≤ -𝐴))) |
22 | 21 | 3adant3 1128 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (-𝐶 ∈ (-𝐵[,]-𝐴) ↔ (-𝐶 ∈ ℝ ∧ -𝐵 ≤ -𝐶 ∧ -𝐶 ≤ -𝐴))) |
23 | 3anass 1091 | . . 3 ⊢ ((-𝐶 ∈ ℝ ∧ -𝐵 ≤ -𝐶 ∧ -𝐶 ≤ -𝐴) ↔ (-𝐶 ∈ ℝ ∧ (-𝐵 ≤ -𝐶 ∧ -𝐶 ≤ -𝐴))) | |
24 | 22, 23 | syl6bb 289 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (-𝐶 ∈ (-𝐵[,]-𝐴) ↔ (-𝐶 ∈ ℝ ∧ (-𝐵 ≤ -𝐶 ∧ -𝐶 ≤ -𝐴)))) |
25 | 13, 17, 24 | 3bitr4d 313 | 1 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (𝐶 ∈ (𝐴[,]𝐵) ↔ -𝐶 ∈ (-𝐵[,]-𝐴))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 208 ∧ wa 398 ∧ w3a 1083 ∈ wcel 2114 class class class wbr 5068 (class class class)co 7158 ℝcr 10538 ≤ cle 10678 -cneg 10873 [,]cicc 12744 |
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 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2795 ax-sep 5205 ax-nul 5212 ax-pow 5268 ax-pr 5332 ax-un 7463 ax-cnex 10595 ax-resscn 10596 ax-1cn 10597 ax-icn 10598 ax-addcl 10599 ax-addrcl 10600 ax-mulcl 10601 ax-mulrcl 10602 ax-mulcom 10603 ax-addass 10604 ax-mulass 10605 ax-distr 10606 ax-i2m1 10607 ax-1ne0 10608 ax-1rid 10609 ax-rnegex 10610 ax-rrecex 10611 ax-cnre 10612 ax-pre-lttri 10613 ax-pre-lttrn 10614 ax-pre-ltadd 10615 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-mo 2622 df-eu 2654 df-clab 2802 df-cleq 2816 df-clel 2895 df-nfc 2965 df-ne 3019 df-nel 3126 df-ral 3145 df-rex 3146 df-reu 3147 df-rab 3149 df-v 3498 df-sbc 3775 df-csb 3886 df-dif 3941 df-un 3943 df-in 3945 df-ss 3954 df-nul 4294 df-if 4470 df-pw 4543 df-sn 4570 df-pr 4572 df-op 4576 df-uni 4841 df-br 5069 df-opab 5131 df-mpt 5149 df-id 5462 df-po 5476 df-so 5477 df-xp 5563 df-rel 5564 df-cnv 5565 df-co 5566 df-dm 5567 df-rn 5568 df-res 5569 df-ima 5570 df-iota 6316 df-fun 6359 df-fn 6360 df-f 6361 df-f1 6362 df-fo 6363 df-f1o 6364 df-fv 6365 df-riota 7116 df-ov 7161 df-oprab 7162 df-mpo 7163 df-er 8291 df-en 8512 df-dom 8513 df-sdom 8514 df-pnf 10679 df-mnf 10680 df-xr 10681 df-ltxr 10682 df-le 10683 df-sub 10874 df-neg 10875 df-icc 12748 |
This theorem is referenced by: xrhmeo 23552 dvivth 24609 |
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