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Mirrors > Home > MPE Home > Th. List > Mathboxes > fct2relem | Structured version Visualization version GIF version |
Description: Lemma for ftc2re 32572. (Contributed by Thierry Arnoux, 20-Dec-2021.) |
Ref | Expression |
---|---|
ftc2re.e | ⊢ 𝐸 = (𝐶(,)𝐷) |
ftc2re.a | ⊢ (𝜑 → 𝐴 ∈ 𝐸) |
ftc2re.b | ⊢ (𝜑 → 𝐵 ∈ 𝐸) |
Ref | Expression |
---|---|
fct2relem | ⊢ (𝜑 → (𝐴[,]𝐵) ⊆ 𝐸) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ftc2re.a | . . . . . 6 ⊢ (𝜑 → 𝐴 ∈ 𝐸) | |
2 | ftc2re.e | . . . . . 6 ⊢ 𝐸 = (𝐶(,)𝐷) | |
3 | 1, 2 | eleqtrdi 2851 | . . . . 5 ⊢ (𝜑 → 𝐴 ∈ (𝐶(,)𝐷)) |
4 | eliooxr 13134 | . . . . 5 ⊢ (𝐴 ∈ (𝐶(,)𝐷) → (𝐶 ∈ ℝ* ∧ 𝐷 ∈ ℝ*)) | |
5 | 3, 4 | syl 17 | . . . 4 ⊢ (𝜑 → (𝐶 ∈ ℝ* ∧ 𝐷 ∈ ℝ*)) |
6 | 5 | simpld 495 | . . 3 ⊢ (𝜑 → 𝐶 ∈ ℝ*) |
7 | 5 | simprd 496 | . . 3 ⊢ (𝜑 → 𝐷 ∈ ℝ*) |
8 | eliooord 13135 | . . . . 5 ⊢ (𝐴 ∈ (𝐶(,)𝐷) → (𝐶 < 𝐴 ∧ 𝐴 < 𝐷)) | |
9 | 3, 8 | syl 17 | . . . 4 ⊢ (𝜑 → (𝐶 < 𝐴 ∧ 𝐴 < 𝐷)) |
10 | 9 | simpld 495 | . . 3 ⊢ (𝜑 → 𝐶 < 𝐴) |
11 | ftc2re.b | . . . . . 6 ⊢ (𝜑 → 𝐵 ∈ 𝐸) | |
12 | 11, 2 | eleqtrdi 2851 | . . . . 5 ⊢ (𝜑 → 𝐵 ∈ (𝐶(,)𝐷)) |
13 | eliooord 13135 | . . . . 5 ⊢ (𝐵 ∈ (𝐶(,)𝐷) → (𝐶 < 𝐵 ∧ 𝐵 < 𝐷)) | |
14 | 12, 13 | syl 17 | . . . 4 ⊢ (𝜑 → (𝐶 < 𝐵 ∧ 𝐵 < 𝐷)) |
15 | 14 | simprd 496 | . . 3 ⊢ (𝜑 → 𝐵 < 𝐷) |
16 | iccssioo 13145 | . . 3 ⊢ (((𝐶 ∈ ℝ* ∧ 𝐷 ∈ ℝ*) ∧ (𝐶 < 𝐴 ∧ 𝐵 < 𝐷)) → (𝐴[,]𝐵) ⊆ (𝐶(,)𝐷)) | |
17 | 6, 7, 10, 15, 16 | syl22anc 836 | . 2 ⊢ (𝜑 → (𝐴[,]𝐵) ⊆ (𝐶(,)𝐷)) |
18 | 17, 2 | sseqtrrdi 3977 | 1 ⊢ (𝜑 → (𝐴[,]𝐵) ⊆ 𝐸) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 396 = wceq 1542 ∈ wcel 2110 ⊆ wss 3892 class class class wbr 5079 (class class class)co 7269 ℝ*cxr 11007 < clt 11008 (,)cioo 13076 [,]cicc 13079 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1975 ax-7 2015 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2158 ax-12 2175 ax-ext 2711 ax-sep 5227 ax-nul 5234 ax-pow 5292 ax-pr 5356 ax-un 7580 ax-cnex 10926 ax-resscn 10927 ax-pre-lttri 10944 ax-pre-lttrn 10945 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1545 df-fal 1555 df-ex 1787 df-nf 1791 df-sb 2072 df-mo 2542 df-eu 2571 df-clab 2718 df-cleq 2732 df-clel 2818 df-nfc 2891 df-ne 2946 df-nel 3052 df-ral 3071 df-rex 3072 df-rab 3075 df-v 3433 df-sbc 3721 df-csb 3838 df-dif 3895 df-un 3897 df-in 3899 df-ss 3909 df-nul 4263 df-if 4466 df-pw 4541 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4846 df-iun 4932 df-br 5080 df-opab 5142 df-mpt 5163 df-id 5489 df-po 5503 df-so 5504 df-xp 5595 df-rel 5596 df-cnv 5597 df-co 5598 df-dm 5599 df-rn 5600 df-res 5601 df-ima 5602 df-iota 6389 df-fun 6433 df-fn 6434 df-f 6435 df-f1 6436 df-fo 6437 df-f1o 6438 df-fv 6439 df-ov 7272 df-oprab 7273 df-mpo 7274 df-1st 7822 df-2nd 7823 df-er 8479 df-en 8715 df-dom 8716 df-sdom 8717 df-pnf 11010 df-mnf 11011 df-xr 11012 df-ltxr 11013 df-le 11014 df-ioo 13080 df-icc 13083 |
This theorem is referenced by: ftc2re 32572 fdvposlt 32573 fdvneggt 32574 fdvposle 32575 fdvnegge 32576 logdivsqrle 32624 |
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