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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 11555 | . . . . 5 ⊢ (𝐶 ∈ ℝ → -𝐶 ∈ ℝ) | |
| 2 | ax-1 6 | . . . . 5 ⊢ (𝐶 ∈ ℝ → (-𝐶 ∈ ℝ → 𝐶 ∈ ℝ)) | |
| 3 | 1, 2 | impbid2 226 | . . . 4 ⊢ (𝐶 ∈ ℝ → (𝐶 ∈ ℝ ↔ -𝐶 ∈ ℝ)) |
| 4 | 3 | 3ad2ant3 1135 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (𝐶 ∈ ℝ ↔ -𝐶 ∈ ℝ)) |
| 5 | ancom 460 | . . . 4 ⊢ ((𝐶 ≤ 𝐵 ∧ 𝐴 ≤ 𝐶) ↔ (𝐴 ≤ 𝐶 ∧ 𝐶 ≤ 𝐵)) | |
| 6 | leneg 11749 | . . . . . . 7 ⊢ ((𝐶 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐶 ≤ 𝐵 ↔ -𝐵 ≤ -𝐶)) | |
| 7 | 6 | ancoms 458 | . . . . . 6 ⊢ ((𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (𝐶 ≤ 𝐵 ↔ -𝐵 ≤ -𝐶)) |
| 8 | 7 | 3adant1 1130 | . . . . 5 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (𝐶 ≤ 𝐵 ↔ -𝐵 ≤ -𝐶)) |
| 9 | leneg 11749 | . . . . . 6 ⊢ ((𝐴 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (𝐴 ≤ 𝐶 ↔ -𝐶 ≤ -𝐴)) | |
| 10 | 9 | 3adant2 1131 | . . . . 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 | bitr3id 285 | . . 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 13435 | . . . 4 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐶 ∈ (𝐴[,]𝐵) ↔ (𝐶 ∈ ℝ ∧ 𝐴 ≤ 𝐶 ∧ 𝐶 ≤ 𝐵))) | |
| 15 | 14 | 3adant3 1132 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (𝐶 ∈ (𝐴[,]𝐵) ↔ (𝐶 ∈ ℝ ∧ 𝐴 ≤ 𝐶 ∧ 𝐶 ≤ 𝐵))) |
| 16 | 3anass 1094 | . . 3 ⊢ ((𝐶 ∈ ℝ ∧ 𝐴 ≤ 𝐶 ∧ 𝐶 ≤ 𝐵) ↔ (𝐶 ∈ ℝ ∧ (𝐴 ≤ 𝐶 ∧ 𝐶 ≤ 𝐵))) | |
| 17 | 15, 16 | bitrdi 287 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (𝐶 ∈ (𝐴[,]𝐵) ↔ (𝐶 ∈ ℝ ∧ (𝐴 ≤ 𝐶 ∧ 𝐶 ≤ 𝐵)))) |
| 18 | renegcl 11555 | . . . . 5 ⊢ (𝐵 ∈ ℝ → -𝐵 ∈ ℝ) | |
| 19 | renegcl 11555 | . . . . 5 ⊢ (𝐴 ∈ ℝ → -𝐴 ∈ ℝ) | |
| 20 | elicc2 13435 | . . . . 5 ⊢ ((-𝐵 ∈ ℝ ∧ -𝐴 ∈ ℝ) → (-𝐶 ∈ (-𝐵[,]-𝐴) ↔ (-𝐶 ∈ ℝ ∧ -𝐵 ≤ -𝐶 ∧ -𝐶 ≤ -𝐴))) | |
| 21 | 18, 19, 20 | syl2anr 597 | . . . 4 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (-𝐶 ∈ (-𝐵[,]-𝐴) ↔ (-𝐶 ∈ ℝ ∧ -𝐵 ≤ -𝐶 ∧ -𝐶 ≤ -𝐴))) |
| 22 | 21 | 3adant3 1132 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (-𝐶 ∈ (-𝐵[,]-𝐴) ↔ (-𝐶 ∈ ℝ ∧ -𝐵 ≤ -𝐶 ∧ -𝐶 ≤ -𝐴))) |
| 23 | 3anass 1094 | . . 3 ⊢ ((-𝐶 ∈ ℝ ∧ -𝐵 ≤ -𝐶 ∧ -𝐶 ≤ -𝐴) ↔ (-𝐶 ∈ ℝ ∧ (-𝐵 ≤ -𝐶 ∧ -𝐶 ≤ -𝐴))) | |
| 24 | 22, 23 | bitrdi 287 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (-𝐶 ∈ (-𝐵[,]-𝐴) ↔ (-𝐶 ∈ ℝ ∧ (-𝐵 ≤ -𝐶 ∧ -𝐶 ≤ -𝐴)))) |
| 25 | 13, 17, 24 | 3bitr4d 311 | 1 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → (𝐶 ∈ (𝐴[,]𝐵) ↔ -𝐶 ∈ (-𝐵[,]-𝐴))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 ∧ w3a 1086 ∈ wcel 2107 class class class wbr 5125 (class class class)co 7414 ℝcr 11137 ≤ cle 11279 -cneg 11476 [,]cicc 13373 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1794 ax-4 1808 ax-5 1909 ax-6 1966 ax-7 2006 ax-8 2109 ax-9 2117 ax-10 2140 ax-11 2156 ax-12 2176 ax-ext 2706 ax-sep 5278 ax-nul 5288 ax-pow 5347 ax-pr 5414 ax-un 7738 ax-cnex 11194 ax-resscn 11195 ax-1cn 11196 ax-icn 11197 ax-addcl 11198 ax-addrcl 11199 ax-mulcl 11200 ax-mulrcl 11201 ax-mulcom 11202 ax-addass 11203 ax-mulass 11204 ax-distr 11205 ax-i2m1 11206 ax-1ne0 11207 ax-1rid 11208 ax-rnegex 11209 ax-rrecex 11210 ax-cnre 11211 ax-pre-lttri 11212 ax-pre-lttrn 11213 ax-pre-ltadd 11214 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1779 df-nf 1783 df-sb 2064 df-mo 2538 df-eu 2567 df-clab 2713 df-cleq 2726 df-clel 2808 df-nfc 2884 df-ne 2932 df-nel 3036 df-ral 3051 df-rex 3060 df-reu 3365 df-rab 3421 df-v 3466 df-sbc 3773 df-csb 3882 df-dif 3936 df-un 3938 df-in 3940 df-ss 3950 df-nul 4316 df-if 4508 df-pw 4584 df-sn 4609 df-pr 4611 df-op 4615 df-uni 4890 df-br 5126 df-opab 5188 df-mpt 5208 df-id 5560 df-po 5574 df-so 5575 df-xp 5673 df-rel 5674 df-cnv 5675 df-co 5676 df-dm 5677 df-rn 5678 df-res 5679 df-ima 5680 df-iota 6495 df-fun 6544 df-fn 6545 df-f 6546 df-f1 6547 df-fo 6548 df-f1o 6549 df-fv 6550 df-riota 7371 df-ov 7417 df-oprab 7418 df-mpo 7419 df-er 8728 df-en 8969 df-dom 8970 df-sdom 8971 df-pnf 11280 df-mnf 11281 df-xr 11282 df-ltxr 11283 df-le 11284 df-sub 11477 df-neg 11478 df-icc 13377 |
| This theorem is referenced by: xrhmeo 24932 dvivth 26004 |
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