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Mirrors > Home > MPE Home > Th. List > Mathboxes > iccsuble | Structured version Visualization version GIF version |
Description: An upper bound to the distance of two elements in a closed interval. (Contributed by Glauco Siliprandi, 11-Dec-2019.) |
Ref | Expression |
---|---|
iccsuble.1 | ⊢ (𝜑 → 𝐴 ∈ ℝ) |
iccsuble.2 | ⊢ (𝜑 → 𝐵 ∈ ℝ) |
iccsuble.3 | ⊢ (𝜑 → 𝐶 ∈ (𝐴[,]𝐵)) |
iccsuble.4 | ⊢ (𝜑 → 𝐷 ∈ (𝐴[,]𝐵)) |
Ref | Expression |
---|---|
iccsuble | ⊢ (𝜑 → (𝐶 − 𝐷) ≤ (𝐵 − 𝐴)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | iccsuble.1 | . . 3 ⊢ (𝜑 → 𝐴 ∈ ℝ) | |
2 | iccsuble.2 | . . 3 ⊢ (𝜑 → 𝐵 ∈ ℝ) | |
3 | iccsuble.3 | . . 3 ⊢ (𝜑 → 𝐶 ∈ (𝐴[,]𝐵)) | |
4 | eliccre 42659 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ (𝐴[,]𝐵)) → 𝐶 ∈ ℝ) | |
5 | 1, 2, 3, 4 | syl3anc 1373 | . 2 ⊢ (𝜑 → 𝐶 ∈ ℝ) |
6 | iccsuble.4 | . . 3 ⊢ (𝜑 → 𝐷 ∈ (𝐴[,]𝐵)) | |
7 | eliccre 42659 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐷 ∈ (𝐴[,]𝐵)) → 𝐷 ∈ ℝ) | |
8 | 1, 2, 6, 7 | syl3anc 1373 | . 2 ⊢ (𝜑 → 𝐷 ∈ ℝ) |
9 | elicc2 12965 | . . . . 5 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐶 ∈ (𝐴[,]𝐵) ↔ (𝐶 ∈ ℝ ∧ 𝐴 ≤ 𝐶 ∧ 𝐶 ≤ 𝐵))) | |
10 | 1, 2, 9 | syl2anc 587 | . . . 4 ⊢ (𝜑 → (𝐶 ∈ (𝐴[,]𝐵) ↔ (𝐶 ∈ ℝ ∧ 𝐴 ≤ 𝐶 ∧ 𝐶 ≤ 𝐵))) |
11 | 3, 10 | mpbid 235 | . . 3 ⊢ (𝜑 → (𝐶 ∈ ℝ ∧ 𝐴 ≤ 𝐶 ∧ 𝐶 ≤ 𝐵)) |
12 | 11 | simp3d 1146 | . 2 ⊢ (𝜑 → 𝐶 ≤ 𝐵) |
13 | elicc2 12965 | . . . . 5 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐷 ∈ (𝐴[,]𝐵) ↔ (𝐷 ∈ ℝ ∧ 𝐴 ≤ 𝐷 ∧ 𝐷 ≤ 𝐵))) | |
14 | 1, 2, 13 | syl2anc 587 | . . . 4 ⊢ (𝜑 → (𝐷 ∈ (𝐴[,]𝐵) ↔ (𝐷 ∈ ℝ ∧ 𝐴 ≤ 𝐷 ∧ 𝐷 ≤ 𝐵))) |
15 | 6, 14 | mpbid 235 | . . 3 ⊢ (𝜑 → (𝐷 ∈ ℝ ∧ 𝐴 ≤ 𝐷 ∧ 𝐷 ≤ 𝐵)) |
16 | 15 | simp2d 1145 | . 2 ⊢ (𝜑 → 𝐴 ≤ 𝐷) |
17 | 5, 1, 2, 8, 12, 16 | le2subd 11417 | 1 ⊢ (𝜑 → (𝐶 − 𝐷) ≤ (𝐵 − 𝐴)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 209 ∧ w3a 1089 ∈ wcel 2112 class class class wbr 5039 (class class class)co 7191 ℝcr 10693 ≤ cle 10833 − cmin 11027 [,]cicc 12903 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1976 ax-7 2018 ax-8 2114 ax-9 2122 ax-10 2143 ax-11 2160 ax-12 2177 ax-ext 2708 ax-sep 5177 ax-nul 5184 ax-pow 5243 ax-pr 5307 ax-un 7501 ax-cnex 10750 ax-resscn 10751 ax-1cn 10752 ax-icn 10753 ax-addcl 10754 ax-addrcl 10755 ax-mulcl 10756 ax-mulrcl 10757 ax-mulcom 10758 ax-addass 10759 ax-mulass 10760 ax-distr 10761 ax-i2m1 10762 ax-1ne0 10763 ax-1rid 10764 ax-rnegex 10765 ax-rrecex 10766 ax-cnre 10767 ax-pre-lttri 10768 ax-pre-lttrn 10769 ax-pre-ltadd 10770 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 848 df-3or 1090 df-3an 1091 df-tru 1546 df-fal 1556 df-ex 1788 df-nf 1792 df-sb 2073 df-mo 2539 df-eu 2568 df-clab 2715 df-cleq 2728 df-clel 2809 df-nfc 2879 df-ne 2933 df-nel 3037 df-ral 3056 df-rex 3057 df-reu 3058 df-rab 3060 df-v 3400 df-sbc 3684 df-csb 3799 df-dif 3856 df-un 3858 df-in 3860 df-ss 3870 df-nul 4224 df-if 4426 df-pw 4501 df-sn 4528 df-pr 4530 df-op 4534 df-uni 4806 df-br 5040 df-opab 5102 df-mpt 5121 df-id 5440 df-po 5453 df-so 5454 df-xp 5542 df-rel 5543 df-cnv 5544 df-co 5545 df-dm 5546 df-rn 5547 df-res 5548 df-ima 5549 df-iota 6316 df-fun 6360 df-fn 6361 df-f 6362 df-f1 6363 df-fo 6364 df-f1o 6365 df-fv 6366 df-riota 7148 df-ov 7194 df-oprab 7195 df-mpo 7196 df-er 8369 df-en 8605 df-dom 8606 df-sdom 8607 df-pnf 10834 df-mnf 10835 df-xr 10836 df-ltxr 10837 df-le 10838 df-sub 11029 df-neg 11030 df-icc 12907 |
This theorem is referenced by: fourierdlem6 43272 fourierdlem42 43308 hoidmvlelem1 43751 |
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