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Mathbox for Glauco Siliprandi |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > itgvol0 | Structured version Visualization version GIF version |
Description: If the domani is negligible, the function is integrable and the integral is 0. (Contributed by Glauco Siliprandi, 11-Dec-2019.) |
Ref | Expression |
---|---|
itgvol0.1 | ⊢ (𝜑 → 𝐴 ⊆ ℝ) |
itgvol0.2 | ⊢ (𝜑 → (vol*‘𝐴) = 0) |
itgvol0.3 | ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 ∈ ℂ) |
Ref | Expression |
---|---|
itgvol0 | ⊢ (𝜑 → ((𝑥 ∈ 𝐴 ↦ 𝐵) ∈ 𝐿1 ∧ ∫𝐴𝐵 d𝑥 = 0)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | mpt0 5934 | . . . 4 ⊢ (𝑥 ∈ ∅ ↦ 𝐵) = ∅ | |
2 | iblempty 38857 | . . . 4 ⊢ ∅ ∈ 𝐿1 | |
3 | 1, 2 | eqeltri 2684 | . . 3 ⊢ (𝑥 ∈ ∅ ↦ 𝐵) ∈ 𝐿1 |
4 | 0ss 3924 | . . . . . 6 ⊢ ∅ ⊆ 𝐴 | |
5 | 4 | a1i 11 | . . . . 5 ⊢ (𝜑 → ∅ ⊆ 𝐴) |
6 | itgvol0.1 | . . . . 5 ⊢ (𝜑 → 𝐴 ⊆ ℝ) | |
7 | difssd 3700 | . . . . . 6 ⊢ (𝜑 → (𝐴 ∖ ∅) ⊆ 𝐴) | |
8 | itgvol0.2 | . . . . . 6 ⊢ (𝜑 → (vol*‘𝐴) = 0) | |
9 | ovolssnul 23062 | . . . . . 6 ⊢ (((𝐴 ∖ ∅) ⊆ 𝐴 ∧ 𝐴 ⊆ ℝ ∧ (vol*‘𝐴) = 0) → (vol*‘(𝐴 ∖ ∅)) = 0) | |
10 | 7, 6, 8, 9 | syl3anc 1318 | . . . . 5 ⊢ (𝜑 → (vol*‘(𝐴 ∖ ∅)) = 0) |
11 | itgvol0.3 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 ∈ ℂ) | |
12 | 5, 6, 10, 11 | itgss3 23387 | . . . 4 ⊢ (𝜑 → (((𝑥 ∈ ∅ ↦ 𝐵) ∈ 𝐿1 ↔ (𝑥 ∈ 𝐴 ↦ 𝐵) ∈ 𝐿1) ∧ ∫∅𝐵 d𝑥 = ∫𝐴𝐵 d𝑥)) |
13 | 12 | simpld 474 | . . 3 ⊢ (𝜑 → ((𝑥 ∈ ∅ ↦ 𝐵) ∈ 𝐿1 ↔ (𝑥 ∈ 𝐴 ↦ 𝐵) ∈ 𝐿1)) |
14 | 3, 13 | mpbii 222 | . 2 ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ 𝐵) ∈ 𝐿1) |
15 | itg0 23352 | . . 3 ⊢ ∫∅𝐵 d𝑥 = 0 | |
16 | 12 | simprd 478 | . . 3 ⊢ (𝜑 → ∫∅𝐵 d𝑥 = ∫𝐴𝐵 d𝑥) |
17 | 15, 16 | syl5reqr 2659 | . 2 ⊢ (𝜑 → ∫𝐴𝐵 d𝑥 = 0) |
18 | 14, 17 | jca 553 | 1 ⊢ (𝜑 → ((𝑥 ∈ 𝐴 ↦ 𝐵) ∈ 𝐿1 ∧ ∫𝐴𝐵 d𝑥 = 0)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 195 ∧ wa 383 = wceq 1475 ∈ wcel 1977 ∖ cdif 3537 ⊆ wss 3540 ∅c0 3874 ↦ cmpt 4643 ‘cfv 5804 ℂcc 9813 ℝcr 9814 0cc0 9815 vol*covol 23038 𝐿1cibl 23192 ∫citg 23193 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-8 1979 ax-9 1986 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 ax-rep 4699 ax-sep 4709 ax-nul 4717 ax-pow 4769 ax-pr 4833 ax-un 6847 ax-inf2 8421 ax-cnex 9871 ax-resscn 9872 ax-1cn 9873 ax-icn 9874 ax-addcl 9875 ax-addrcl 9876 ax-mulcl 9877 ax-mulrcl 9878 ax-mulcom 9879 ax-addass 9880 ax-mulass 9881 ax-distr 9882 ax-i2m1 9883 ax-1ne0 9884 ax-1rid 9885 ax-rnegex 9886 ax-rrecex 9887 ax-cnre 9888 ax-pre-lttri 9889 ax-pre-lttrn 9890 ax-pre-ltadd 9891 ax-pre-mulgt0 9892 ax-pre-sup 9893 ax-addf 9894 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-3or 1032 df-3an 1033 df-tru 1478 df-fal 1481 df-ex 1696 df-nf 1701 df-sb 1868 df-eu 2462 df-mo 2463 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-ne 2782 df-nel 2783 df-ral 2901 df-rex 2902 df-reu 2903 df-rmo 2904 df-rab 2905 df-v 3175 df-sbc 3403 df-csb 3500 df-dif 3543 df-un 3545 df-in 3547 df-ss 3554 df-pss 3556 df-nul 3875 df-if 4037 df-pw 4110 df-sn 4126 df-pr 4128 df-tp 4130 df-op 4132 df-uni 4373 df-int 4411 df-iun 4457 df-disj 4554 df-br 4584 df-opab 4644 df-mpt 4645 df-tr 4681 df-eprel 4949 df-id 4953 df-po 4959 df-so 4960 df-fr 4997 df-se 4998 df-we 4999 df-xp 5044 df-rel 5045 df-cnv 5046 df-co 5047 df-dm 5048 df-rn 5049 df-res 5050 df-ima 5051 df-pred 5597 df-ord 5643 df-on 5644 df-lim 5645 df-suc 5646 df-iota 5768 df-fun 5806 df-fn 5807 df-f 5808 df-f1 5809 df-fo 5810 df-f1o 5811 df-fv 5812 df-isom 5813 df-riota 6511 df-ov 6552 df-oprab 6553 df-mpt2 6554 df-of 6795 df-ofr 6796 df-om 6958 df-1st 7059 df-2nd 7060 df-wrecs 7294 df-recs 7355 df-rdg 7393 df-1o 7447 df-2o 7448 df-oadd 7451 df-er 7629 df-map 7746 df-pm 7747 df-en 7842 df-dom 7843 df-sdom 7844 df-fin 7845 df-fi 8200 df-sup 8231 df-inf 8232 df-oi 8298 df-card 8648 df-cda 8873 df-pnf 9955 df-mnf 9956 df-xr 9957 df-ltxr 9958 df-le 9959 df-sub 10147 df-neg 10148 df-div 10564 df-nn 10898 df-2 10956 df-3 10957 df-4 10958 df-n0 11170 df-z 11255 df-uz 11564 df-q 11665 df-rp 11709 df-xneg 11822 df-xadd 11823 df-xmul 11824 df-ioo 12050 df-ico 12052 df-icc 12053 df-fz 12198 df-fzo 12335 df-fl 12455 df-mod 12531 df-seq 12664 df-exp 12723 df-hash 12980 df-cj 13687 df-re 13688 df-im 13689 df-sqrt 13823 df-abs 13824 df-clim 14067 df-sum 14265 df-rest 15906 df-topgen 15927 df-psmet 19559 df-xmet 19560 df-met 19561 df-bl 19562 df-mopn 19563 df-top 20521 df-bases 20522 df-topon 20523 df-cmp 21000 df-ovol 23040 df-vol 23041 df-mbf 23194 df-itg1 23195 df-itg2 23196 df-ibl 23197 df-itg 23198 df-0p 23243 |
This theorem is referenced by: (None) |
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