measvunilem0 - Mathbox for Thierry Arnoux

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Theorem measvunilem0 34397

Description: Lemma for measvuni 34398. (Contributed by Thierry Arnoux, 6-Mar-2017.)

**Hypothesis**
Ref	Expression
measvunilem.0.1	⊢ Ⅎ𝑥𝐴

**Assertion**
Ref	Expression
measvunilem0	⊢ ((𝑀 ∈ (measures‘𝑆) ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ {∅} ∧ (𝐴 ≼ ω ∧ Disj 𝑥 ∈ 𝐴 𝐵)) → (𝑀‘∪ 𝑥 ∈ 𝐴 𝐵) = Σ^*𝑥 ∈ 𝐴(𝑀‘𝐵))

Distinct variable groups: 𝑥,𝑀 𝑥,𝑆 Allowed substitution hints: 𝐴(𝑥) 𝐵(𝑥)

**Proof of Theorem measvunilem0**
Step	Hyp	Ref	Expression
1		simp3l 1208	. . 3 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ {∅} ∧ (𝐴 ≼ ω ∧ Disj 𝑥 ∈ 𝐴 𝐵)) → 𝐴 ≼ ω)
2		ctex 8900	. . 3 ⊢ (𝐴 ≼ ω → 𝐴 ∈ V)
3		measvunilem.0.1	. . . 4 ⊢ Ⅎ𝑥𝐴
4	3	esum0 34233	. . 3 ⊢ (𝐴 ∈ V → Σ^*𝑥 ∈ 𝐴0 = 0)
5	1, 2, 4	3syl 18	. 2 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ {∅} ∧ (𝐴 ≼ ω ∧ Disj 𝑥 ∈ 𝐴 𝐵)) → Σ^*𝑥 ∈ 𝐴0 = 0)
6		nfv 1921	. . . 4 ⊢ Ⅎ𝑥 𝑀 ∈ (measures‘𝑆)
7		nfra1 3263	. . . 4 ⊢ Ⅎ𝑥∀𝑥 ∈ 𝐴 𝐵 ∈ {∅}
8		nfcv 2901	. . . . . 6 ⊢ Ⅎ𝑥 ≼
9		nfcv 2901	. . . . . 6 ⊢ Ⅎ𝑥ω
10	3, 8, 9	nfbr 5119	. . . . 5 ⊢ Ⅎ𝑥 𝐴 ≼ ω
11		nfdisj1 5053	. . . . 5 ⊢ Ⅎ𝑥Disj 𝑥 ∈ 𝐴 𝐵
12	10, 11	nfan 1906	. . . 4 ⊢ Ⅎ𝑥(𝐴 ≼ ω ∧ Disj 𝑥 ∈ 𝐴 𝐵)
13	6, 7, 12	nf3an 1908	. . 3 ⊢ Ⅎ𝑥(𝑀 ∈ (measures‘𝑆) ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ {∅} ∧ (𝐴 ≼ ω ∧ Disj 𝑥 ∈ 𝐴 𝐵))
14		eqidd 2740	. . 3 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ {∅} ∧ (𝐴 ≼ ω ∧ Disj 𝑥 ∈ 𝐴 𝐵)) → 𝐴 = 𝐴)
15		simp2 1143	. . . . . . 7 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ {∅} ∧ (𝐴 ≼ ω ∧ Disj 𝑥 ∈ 𝐴 𝐵)) → ∀𝑥 ∈ 𝐴 𝐵 ∈ {∅})
16	15	r19.21bi 3231	. . . . . 6 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ {∅} ∧ (𝐴 ≼ ω ∧ Disj 𝑥 ∈ 𝐴 𝐵)) ∧ 𝑥 ∈ 𝐴) → 𝐵 ∈ {∅})
17		elsni 4572	. . . . . 6 ⊢ (𝐵 ∈ {∅} → 𝐵 = ∅)
18	16, 17	syl 17	. . . . 5 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ {∅} ∧ (𝐴 ≼ ω ∧ Disj 𝑥 ∈ 𝐴 𝐵)) ∧ 𝑥 ∈ 𝐴) → 𝐵 = ∅)
19	18	fveq2d 6831	. . . 4 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ {∅} ∧ (𝐴 ≼ ω ∧ Disj 𝑥 ∈ 𝐴 𝐵)) ∧ 𝑥 ∈ 𝐴) → (𝑀‘𝐵) = (𝑀‘∅))
20		measvnul 34390	. . . . . 6 ⊢ (𝑀 ∈ (measures‘𝑆) → (𝑀‘∅) = 0)
21	20	3ad2ant1 1139	. . . . 5 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ {∅} ∧ (𝐴 ≼ ω ∧ Disj 𝑥 ∈ 𝐴 𝐵)) → (𝑀‘∅) = 0)
22	21	adantr 481	. . . 4 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ {∅} ∧ (𝐴 ≼ ω ∧ Disj 𝑥 ∈ 𝐴 𝐵)) ∧ 𝑥 ∈ 𝐴) → (𝑀‘∅) = 0)
23	19, 22	eqtrd 2774	. . 3 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ {∅} ∧ (𝐴 ≼ ω ∧ Disj 𝑥 ∈ 𝐴 𝐵)) ∧ 𝑥 ∈ 𝐴) → (𝑀‘𝐵) = 0)
24	13, 14, 23	esumeq12dvaf 34215	. 2 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ {∅} ∧ (𝐴 ≼ ω ∧ Disj 𝑥 ∈ 𝐴 𝐵)) → Σ^𝑥 ∈ 𝐴(𝑀‘𝐵) = Σ^𝑥 ∈ 𝐴0)
25	13, 3, 3, 14, 18	iuneq12daf 32645	. . . . 5 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ {∅} ∧ (𝐴 ≼ ω ∧ Disj 𝑥 ∈ 𝐴 𝐵)) → ∪ 𝑥 ∈ 𝐴 𝐵 = ∪ 𝑥 ∈ 𝐴 ∅)
26		iun0 4991	. . . . 5 ⊢ ∪ 𝑥 ∈ 𝐴 ∅ = ∅
27	25, 26	eqtrdi 2790	. . . 4 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ {∅} ∧ (𝐴 ≼ ω ∧ Disj 𝑥 ∈ 𝐴 𝐵)) → ∪ 𝑥 ∈ 𝐴 𝐵 = ∅)
28	27	fveq2d 6831	. . 3 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ {∅} ∧ (𝐴 ≼ ω ∧ Disj 𝑥 ∈ 𝐴 𝐵)) → (𝑀‘∪ 𝑥 ∈ 𝐴 𝐵) = (𝑀‘∅))
29	28, 21	eqtrd 2774	. 2 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ {∅} ∧ (𝐴 ≼ ω ∧ Disj 𝑥 ∈ 𝐴 𝐵)) → (𝑀‘∪ 𝑥 ∈ 𝐴 𝐵) = 0)
30	5, 24, 29	3eqtr4rd 2785	1 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ {∅} ∧ (𝐴 ≼ ω ∧ Disj 𝑥 ∈ 𝐴 𝐵)) → (𝑀‘∪ 𝑥 ∈ 𝐴 𝐵) = Σ^*𝑥 ∈ 𝐴(𝑀‘𝐵))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 396 ∧ w3a 1092 = wceq 1547 ∈ wcel 2119 Ⅎwnfc 2886 ∀wral 3053 Vcvv 3431 ∅c0 4261 {csn 4555 ∪ ciun 4921 Disj wdisj 5039 class class class wbr 5072 ‘cfv 6485 ωcom 7806 ≼ cdom 8881 0cc0 11029 Σ^*cesum 34211 measurescmeas 34379

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 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-10 2152 ax-11 2168 ax-12 2189 ax-ext 2711 ax-rep 5199 ax-sep 5218 ax-nul 5228 ax-pow 5294 ax-pr 5362 ax-un 7678 ax-cnex 11085 ax-resscn 11086 ax-1cn 11087 ax-icn 11088 ax-addcl 11089 ax-addrcl 11090 ax-mulcl 11091 ax-mulrcl 11092 ax-mulcom 11093 ax-addass 11094 ax-mulass 11095 ax-distr 11096 ax-i2m1 11097 ax-1ne0 11098 ax-1rid 11099 ax-rnegex 11100 ax-rrecex 11101 ax-cnre 11102 ax-pre-lttri 11103 ax-pre-lttrn 11104 ax-pre-ltadd 11105 ax-pre-mulgt0 11106 ax-pre-sup 11107

This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3or 1093 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-nf 1791 df-sb 2074 df-mo 2543 df-eu 2573 df-clab 2718 df-cleq 2731 df-clel 2814 df-nfc 2888 df-ne 2935 df-nel 3039 df-ral 3054 df-rex 3064 df-rmo 3344 df-reu 3345 df-rab 3392 df-v 3433 df-sbc 3724 df-csb 3832 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3903 df-nul 4262 df-if 4455 df-pw 4531 df-sn 4556 df-pr 4558 df-tp 4560 df-op 4562 df-uni 4839 df-int 4878 df-iun 4923 df-iin 4924 df-disj 5040 df-br 5073 df-opab 5135 df-mpt 5154 df-tr 5180 df-id 5513 df-eprel 5518 df-po 5526 df-so 5527 df-fr 5571 df-se 5572 df-we 5573 df-xp 5624 df-rel 5625 df-cnv 5626 df-co 5627 df-dm 5628 df-rn 5629 df-res 5630 df-ima 5631 df-pred 6252 df-ord 6313 df-on 6314 df-lim 6315 df-suc 6316 df-iota 6441 df-fun 6487 df-fn 6488 df-f 6489 df-f1 6490 df-fo 6491 df-f1o 6492 df-fv 6493 df-isom 6494 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-supp 8101 df-frecs 8221 df-wrecs 8252 df-recs 8301 df-rdg 8339 df-1o 8395 df-2o 8396 df-er 8633 df-map 8765 df-en 8884 df-dom 8885 df-sdom 8886 df-fin 8887 df-fsupp 9265 df-fi 9314 df-sup 9345 df-inf 9346 df-oi 9415 df-card 9854 df-pnf 11172 df-mnf 11173 df-xr 11174 df-ltxr 11175 df-le 11176 df-sub 11370 df-neg 11371 df-div 11799 df-nn 12166 df-2 12235 df-3 12236 df-4 12237 df-5 12238 df-6 12239 df-7 12240 df-8 12241 df-9 12242 df-n0 12429 df-z 12516 df-dec 12636 df-uz 12780 df-q 12890 df-xadd 13055 df-ioo 13293 df-ioc 13294 df-ico 13295 df-icc 13296 df-fz 13453 df-fzo 13600 df-seq 13955 df-hash 14284 df-struct 17108 df-sets 17125 df-slot 17143 df-ndx 17155 df-base 17171 df-ress 17192 df-plusg 17224 df-mulr 17225 df-tset 17230 df-ple 17231 df-ds 17233 df-rest 17376 df-topn 17377 df-0g 17395 df-gsum 17396 df-topgen 17397 df-ordt 17456 df-xrs 17457 df-mre 17539 df-mrc 17540 df-acs 17542 df-ps 18523 df-tsr 18524 df-mgm 18599 df-sgrp 18678 df-mnd 18694 df-submnd 18743 df-cntz 19283 df-cmn 19748 df-fbas 21344 df-fg 21345 df-top 22877 df-topon 22894 df-topsp 22916 df-bases 22929 df-ntr 23003 df-nei 23081 df-cn 23210 df-haus 23298 df-fil 23829 df-fm 23921 df-flim 23922 df-flf 23923 df-tsms 24110 df-esum 34212 df-meas 34380

This theorem is referenced by: measvuni 34398

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