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| Mirrors > Home > MPE Home > Th. List > Mathboxes > vonxrcl | Structured version Visualization version GIF version | ||
| Description: The Lebesgue measure of a set is an extended real. (Contributed by Glauco Siliprandi, 8-Apr-2021.) |
| Ref | Expression |
|---|---|
| vonxrcl.x | ⊢ (𝜑 → 𝑋 ∈ Fin) |
| vonxrcl.s | ⊢ 𝑆 = dom (voln‘𝑋) |
| vonxrcl.a | ⊢ (𝜑 → 𝐴 ∈ 𝑆) |
| Ref | Expression |
|---|---|
| vonxrcl | ⊢ (𝜑 → ((voln‘𝑋)‘𝐴) ∈ ℝ*) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | iccssxr 13372 | . 2 ⊢ (0[,]+∞) ⊆ ℝ* | |
| 2 | vonxrcl.x | . . 3 ⊢ (𝜑 → 𝑋 ∈ Fin) | |
| 3 | vonxrcl.s | . . 3 ⊢ 𝑆 = dom (voln‘𝑋) | |
| 4 | vonxrcl.a | . . 3 ⊢ (𝜑 → 𝐴 ∈ 𝑆) | |
| 5 | 2, 3, 4 | voncl 47082 | . 2 ⊢ (𝜑 → ((voln‘𝑋)‘𝐴) ∈ (0[,]+∞)) |
| 6 | 1, 5 | sselid 3915 | 1 ⊢ (𝜑 → ((voln‘𝑋)‘𝐴) ∈ ℝ*) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1542 ∈ wcel 2114 dom cdm 5620 ‘cfv 6487 (class class class)co 7356 Fincfn 8882 0cc0 11027 +∞cpnf 11165 ℝ*cxr 11167 [,]cicc 13290 volncvoln 46954 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2184 ax-ext 2707 ax-rep 5201 ax-sep 5220 ax-nul 5230 ax-pow 5296 ax-pr 5364 ax-un 7678 ax-inf2 9551 ax-cc 10346 ax-ac2 10374 ax-cnex 11083 ax-resscn 11084 ax-1cn 11085 ax-icn 11086 ax-addcl 11087 ax-addrcl 11088 ax-mulcl 11089 ax-mulrcl 11090 ax-mulcom 11091 ax-addass 11092 ax-mulass 11093 ax-distr 11094 ax-i2m1 11095 ax-1ne0 11096 ax-1rid 11097 ax-rnegex 11098 ax-rrecex 11099 ax-cnre 11100 ax-pre-lttri 11101 ax-pre-lttrn 11102 ax-pre-ltadd 11103 ax-pre-mulgt0 11104 ax-pre-sup 11105 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2538 df-eu 2568 df-clab 2714 df-cleq 2727 df-clel 2810 df-nfc 2884 df-ne 2931 df-nel 3035 df-ral 3050 df-rex 3060 df-rmo 3340 df-reu 3341 df-rab 3388 df-v 3429 df-sbc 3726 df-csb 3834 df-dif 3888 df-un 3890 df-in 3892 df-ss 3902 df-pss 3905 df-nul 4264 df-if 4457 df-pw 4533 df-sn 4558 df-pr 4560 df-op 4564 df-uni 4841 df-int 4880 df-iun 4925 df-disj 5042 df-br 5075 df-opab 5137 df-mpt 5156 df-tr 5182 df-id 5515 df-eprel 5520 df-po 5528 df-so 5529 df-fr 5573 df-se 5574 df-we 5575 df-xp 5626 df-rel 5627 df-cnv 5628 df-co 5629 df-dm 5630 df-rn 5631 df-res 5632 df-ima 5633 df-pred 6254 df-ord 6315 df-on 6316 df-lim 6317 df-suc 6318 df-iota 6443 df-fun 6489 df-fn 6490 df-f 6491 df-f1 6492 df-fo 6493 df-f1o 6494 df-fv 6495 df-isom 6496 df-riota 7313 df-ov 7359 df-oprab 7360 df-mpo 7361 df-of 7620 df-om 7807 df-1st 7931 df-2nd 7932 df-frecs 8220 df-wrecs 8251 df-recs 8300 df-rdg 8338 df-1o 8394 df-2o 8395 df-oadd 8398 df-omul 8399 df-er 8632 df-map 8764 df-pm 8765 df-ixp 8835 df-en 8883 df-dom 8884 df-sdom 8885 df-fin 8886 df-fi 9313 df-sup 9344 df-inf 9345 df-oi 9414 df-dju 9814 df-card 9852 df-acn 9855 df-ac 10027 df-pnf 11170 df-mnf 11171 df-xr 11172 df-ltxr 11173 df-le 11174 df-sub 11368 df-neg 11369 df-div 11797 df-nn 12164 df-2 12233 df-3 12234 df-n0 12427 df-z 12514 df-uz 12778 df-q 12888 df-rp 12932 df-xneg 13052 df-xadd 13053 df-xmul 13054 df-ioo 13291 df-ico 13293 df-icc 13294 df-fz 13451 df-fzo 13598 df-fl 13740 df-seq 13953 df-exp 14013 df-hash 14282 df-cj 15050 df-re 15051 df-im 15052 df-sqrt 15186 df-abs 15187 df-clim 15439 df-rlim 15440 df-sum 15638 df-prod 15858 df-rest 17374 df-topgen 17395 df-psmet 21333 df-xmet 21334 df-met 21335 df-bl 21336 df-mopn 21337 df-top 22847 df-topon 22864 df-bases 22899 df-cmp 23340 df-ovol 25419 df-vol 25420 df-salg 46725 df-sumge0 46779 df-mea 46866 df-ome 46906 df-caragen 46908 df-ovoln 46953 df-voln 46955 |
| This theorem is referenced by: (None) |
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