Theorem elcarsg 29694

Description: Property of being a Catatheodory measurable set. (Contributed by Thierry Arnoux, 17-May-2020.)

Hypotheses

Ref	Expression
carsgval.1	⊢ (𝜑 → 𝑂 ∈ 𝑉)
carsgval.2	⊢ (𝜑 → 𝑀:𝒫 𝑂⟶(0[,]+∞))

Assertion

Ref	Expression
elcarsg	⊢ (𝜑 → (𝐴 ∈ (toCaraSiga‘𝑀) ↔ (𝐴 ⊆ 𝑂 ∧ ∀𝑒 ∈ 𝒫 𝑂((𝑀‘(𝑒 ∩ 𝐴)) +𝑒 (𝑀‘(𝑒 ∖ 𝐴))) = (𝑀‘𝑒))))

Distinct variable groups:   𝑒,𝑀   𝑒,𝑂   𝜑,𝑒   𝐴,𝑒

Allowed substitution hint:   𝑉(𝑒)

Proof of Theorem elcarsg

Dummy variable 𝑎 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		carsgval.1	. . . 4 ⊢ (𝜑 → 𝑂 ∈ 𝑉)
2		carsgval.2	. . . 4 ⊢ (𝜑 → 𝑀:𝒫 𝑂⟶(0[,]+∞))
3	1, 2	carsgval 29692	. . 3 ⊢ (𝜑 → (toCaraSiga‘𝑀) = {𝑎 ∈ 𝒫 𝑂 ∣ ∀𝑒 ∈ 𝒫 𝑂((𝑀‘(𝑒 ∩ 𝑎)) +𝑒 (𝑀‘(𝑒 ∖ 𝑎))) = (𝑀‘𝑒)})
4	3	eleq2d 2673	. 2 ⊢ (𝜑 → (𝐴 ∈ (toCaraSiga‘𝑀) ↔ 𝐴 ∈ {𝑎 ∈ 𝒫 𝑂 ∣ ∀𝑒 ∈ 𝒫 𝑂((𝑀‘(𝑒 ∩ 𝑎)) +𝑒 (𝑀‘(𝑒 ∖ 𝑎))) = (𝑀‘𝑒)}))
5		ineq2 3770	. . . . . . . 8 ⊢ (𝑎 = 𝐴 → (𝑒 ∩ 𝑎) = (𝑒 ∩ 𝐴))
6	5	fveq2d 6107	. . . . . . 7 ⊢ (𝑎 = 𝐴 → (𝑀‘(𝑒 ∩ 𝑎)) = (𝑀‘(𝑒 ∩ 𝐴)))
7		difeq2 3684	. . . . . . . 8 ⊢ (𝑎 = 𝐴 → (𝑒 ∖ 𝑎) = (𝑒 ∖ 𝐴))
8	7	fveq2d 6107	. . . . . . 7 ⊢ (𝑎 = 𝐴 → (𝑀‘(𝑒 ∖ 𝑎)) = (𝑀‘(𝑒 ∖ 𝐴)))
9	6, 8	oveq12d 6567	. . . . . 6 ⊢ (𝑎 = 𝐴 → ((𝑀‘(𝑒 ∩ 𝑎)) +𝑒 (𝑀‘(𝑒 ∖ 𝑎))) = ((𝑀‘(𝑒 ∩ 𝐴)) +𝑒 (𝑀‘(𝑒 ∖ 𝐴))))
10	9	eqeq1d 2612	. . . . 5 ⊢ (𝑎 = 𝐴 → (((𝑀‘(𝑒 ∩ 𝑎)) +𝑒 (𝑀‘(𝑒 ∖ 𝑎))) = (𝑀‘𝑒) ↔ ((𝑀‘(𝑒 ∩ 𝐴)) +𝑒 (𝑀‘(𝑒 ∖ 𝐴))) = (𝑀‘𝑒)))
11	10	ralbidv 2969	. . . 4 ⊢ (𝑎 = 𝐴 → (∀𝑒 ∈ 𝒫 𝑂((𝑀‘(𝑒 ∩ 𝑎)) +𝑒 (𝑀‘(𝑒 ∖ 𝑎))) = (𝑀‘𝑒) ↔ ∀𝑒 ∈ 𝒫 𝑂((𝑀‘(𝑒 ∩ 𝐴)) +𝑒 (𝑀‘(𝑒 ∖ 𝐴))) = (𝑀‘𝑒)))
12	11	elrab 3331	. . 3 ⊢ (𝐴 ∈ {𝑎 ∈ 𝒫 𝑂 ∣ ∀𝑒 ∈ 𝒫 𝑂((𝑀‘(𝑒 ∩ 𝑎)) +𝑒 (𝑀‘(𝑒 ∖ 𝑎))) = (𝑀‘𝑒)} ↔ (𝐴 ∈ 𝒫 𝑂 ∧ ∀𝑒 ∈ 𝒫 𝑂((𝑀‘(𝑒 ∩ 𝐴)) +𝑒 (𝑀‘(𝑒 ∖ 𝐴))) = (𝑀‘𝑒)))
13		elex 3185	. . . . . 6 ⊢ (𝐴 ∈ 𝒫 𝑂 → 𝐴 ∈ V)
14	13	a1i 11	. . . . 5 ⊢ (𝜑 → (𝐴 ∈ 𝒫 𝑂 → 𝐴 ∈ V))
15		simpr 476	. . . . . . 7 ⊢ ((𝜑 ∧ 𝐴 ⊆ 𝑂) → 𝐴 ⊆ 𝑂)
16	1	adantr 480	. . . . . . 7 ⊢ ((𝜑 ∧ 𝐴 ⊆ 𝑂) → 𝑂 ∈ 𝑉)
17		ssexg 4732	. . . . . . 7 ⊢ ((𝐴 ⊆ 𝑂 ∧ 𝑂 ∈ 𝑉) → 𝐴 ∈ V)
18	15, 16, 17	syl2anc 691	. . . . . 6 ⊢ ((𝜑 ∧ 𝐴 ⊆ 𝑂) → 𝐴 ∈ V)
19	18	ex 449	. . . . 5 ⊢ (𝜑 → (𝐴 ⊆ 𝑂 → 𝐴 ∈ V))
20		elpwg 4116	. . . . . 6 ⊢ (𝐴 ∈ V → (𝐴 ∈ 𝒫 𝑂 ↔ 𝐴 ⊆ 𝑂))
21	20	a1i 11	. . . . 5 ⊢ (𝜑 → (𝐴 ∈ V → (𝐴 ∈ 𝒫 𝑂 ↔ 𝐴 ⊆ 𝑂)))
22	14, 19, 21	pm5.21ndd 368	. . . 4 ⊢ (𝜑 → (𝐴 ∈ 𝒫 𝑂 ↔ 𝐴 ⊆ 𝑂))
23	22	anbi1d 737	. . 3 ⊢ (𝜑 → ((𝐴 ∈ 𝒫 𝑂 ∧ ∀𝑒 ∈ 𝒫 𝑂((𝑀‘(𝑒 ∩ 𝐴)) +𝑒 (𝑀‘(𝑒 ∖ 𝐴))) = (𝑀‘𝑒)) ↔ (𝐴 ⊆ 𝑂 ∧ ∀𝑒 ∈ 𝒫 𝑂((𝑀‘(𝑒 ∩ 𝐴)) +𝑒 (𝑀‘(𝑒 ∖ 𝐴))) = (𝑀‘𝑒))))
24	12, 23	syl5bb 271	. 2 ⊢ (𝜑 → (𝐴 ∈ {𝑎 ∈ 𝒫 𝑂 ∣ ∀𝑒 ∈ 𝒫 𝑂((𝑀‘(𝑒 ∩ 𝑎)) +𝑒 (𝑀‘(𝑒 ∖ 𝑎))) = (𝑀‘𝑒)} ↔ (𝐴 ⊆ 𝑂 ∧ ∀𝑒 ∈ 𝒫 𝑂((𝑀‘(𝑒 ∩ 𝐴)) +𝑒 (𝑀‘(𝑒 ∖ 𝐴))) = (𝑀‘𝑒))))
25	4, 24	bitrd 267	1 ⊢ (𝜑 → (𝐴 ∈ (toCaraSiga‘𝑀) ↔ (𝐴 ⊆ 𝑂 ∧ ∀𝑒 ∈ 𝒫 𝑂((𝑀‘(𝑒 ∩ 𝐴)) +𝑒 (𝑀‘(𝑒 ∖ 𝐴))) = (𝑀‘𝑒))))

Syntax hints:   → wi 4   ↔ wb 195   ∧ wa 383   = wceq 1475   ∈ wcel 1977  ∀wral 2896  {crab 2900  Vcvv 3173   ∖ cdif 3537   ∩ cin 3539   ⊆ wss 3540  𝒫 cpw 4108  ⟶wf 5800  ‘cfv 5804  (class class class)co 6549  0cc0 9815  +∞cpnf 9950   +_𝑒 cxad 11820  [,]cicc 12049  toCaraSigaccarsg 29690

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-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

This theorem depends on definitions:  df-bi 196  df-or 384  df-an 385  df-3an 1033  df-tru 1478  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-ral 2901  df-rex 2902  df-reu 2903  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-nul 3875  df-if 4037  df-pw 4110  df-sn 4126  df-pr 4128  df-op 4132  df-uni 4373  df-iun 4457  df-br 4584  df-opab 4644  df-mpt 4645  df-id 4953  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-iota 5768  df-fun 5806  df-fn 5807  df-f 5808  df-f1 5809  df-fo 5810  df-f1o 5811  df-fv 5812  df-ov 6552  df-carsg 29691

This theorem is referenced by:  baselcarsg  29695  0elcarsg  29696  difelcarsg  29699  inelcarsg  29700  carsgclctunlem1  29706  carsgclctunlem2  29708  carsgclctun  29710