Theorem carsgval 35002

Description: Value of the Caratheodory sigma-Algebra construction function. (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
carsgval	⊢ (𝜑 → (toCaraSiga‘𝑀) = {𝑎 ∈ 𝒫 𝑂 ∣ ∀𝑒 ∈ 𝒫 𝑂((𝑀‘(𝑒 ∩ 𝑎)) +e (𝑀‘(𝑒 ∖ 𝑎))) = (𝑀‘𝑒)})

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

Allowed substitution hints:   𝑉(𝑒, 𝑎)

Proof of Theorem carsgval

Dummy variable 𝑚 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		df-carsg 35001	. 2 ⊢ toCaraSiga = (𝑚 ∈ V ↦ {𝑎 ∈ 𝒫 ∪ dom 𝑚 ∣ ∀𝑒 ∈ 𝒫 ∪ dom 𝑚((𝑚‘(𝑒 ∩ 𝑎)) +e (𝑚‘(𝑒 ∖ 𝑎))) = (𝑚‘𝑒)})
2		simpr 490	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑚 = 𝑀) → 𝑚 = 𝑀)
3	2	dmeqd 5893	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑚 = 𝑀) → dom 𝑚 = dom 𝑀)
4		carsgval.2	. . . . . . . . 9 ⊢ (𝜑 → 𝑀:𝒫 𝑂⟶(0[,]+∞))
5	4	fdmd 6739	. . . . . . . 8 ⊢ (𝜑 → dom 𝑀 = 𝒫 𝑂)
6	5	adantr 486	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑚 = 𝑀) → dom 𝑀 = 𝒫 𝑂)
7	3, 6	eqtrd 2798	. . . . . 6 ⊢ ((𝜑 ∧ 𝑚 = 𝑀) → dom 𝑚 = 𝒫 𝑂)
8	7	unieqd 4883	. . . . 5 ⊢ ((𝜑 ∧ 𝑚 = 𝑀) → ∪ dom 𝑚 = ∪ 𝒫 𝑂)
9		unipw 5422	. . . . 5 ⊢ ∪ 𝒫 𝑂 = 𝑂
10	8, 9	eqtrdi 2814	. . . 4 ⊢ ((𝜑 ∧ 𝑚 = 𝑀) → ∪ dom 𝑚 = 𝑂)
11	10	pweqd 4577	. . 3 ⊢ ((𝜑 ∧ 𝑚 = 𝑀) → 𝒫 ∪ dom 𝑚 = 𝒫 𝑂)
12		fveq1 6904	. . . . . . 7 ⊢ (𝑚 = 𝑀 → (𝑚‘(𝑒 ∩ 𝑎)) = (𝑀‘(𝑒 ∩ 𝑎)))
13		fveq1 6904	. . . . . . 7 ⊢ (𝑚 = 𝑀 → (𝑚‘(𝑒 ∖ 𝑎)) = (𝑀‘(𝑒 ∖ 𝑎)))
14	12, 13	oveq12d 7458	. . . . . 6 ⊢ (𝑚 = 𝑀 → ((𝑚‘(𝑒 ∩ 𝑎)) +e (𝑚‘(𝑒 ∖ 𝑎))) = ((𝑀‘(𝑒 ∩ 𝑎)) +e (𝑀‘(𝑒 ∖ 𝑎))))
15		fveq1 6904	. . . . . 6 ⊢ (𝑚 = 𝑀 → (𝑚‘𝑒) = (𝑀‘𝑒))
16	14, 15	eqeq12d 2779	. . . . 5 ⊢ (𝑚 = 𝑀 → (((𝑚‘(𝑒 ∩ 𝑎)) +e (𝑚‘(𝑒 ∖ 𝑎))) = (𝑚‘𝑒) ↔ ((𝑀‘(𝑒 ∩ 𝑎)) +e (𝑀‘(𝑒 ∖ 𝑎))) = (𝑀‘𝑒)))
17	16	adantl 487	. . . 4 ⊢ ((𝜑 ∧ 𝑚 = 𝑀) → (((𝑚‘(𝑒 ∩ 𝑎)) +e (𝑚‘(𝑒 ∖ 𝑎))) = (𝑚‘𝑒) ↔ ((𝑀‘(𝑒 ∩ 𝑎)) +e (𝑀‘(𝑒 ∖ 𝑎))) = (𝑀‘𝑒)))
18	11, 17	raleqbidv 3338	. . 3 ⊢ ((𝜑 ∧ 𝑚 = 𝑀) → (∀𝑒 ∈ 𝒫 ∪ dom 𝑚((𝑚‘(𝑒 ∩ 𝑎)) +e (𝑚‘(𝑒 ∖ 𝑎))) = (𝑚‘𝑒) ↔ ∀𝑒 ∈ 𝒫 𝑂((𝑀‘(𝑒 ∩ 𝑎)) +e (𝑀‘(𝑒 ∖ 𝑎))) = (𝑀‘𝑒)))
19	11, 18	rabeqbidv 3433	. 2 ⊢ ((𝜑 ∧ 𝑚 = 𝑀) → {𝑎 ∈ 𝒫 ∪ dom 𝑚 ∣ ∀𝑒 ∈ 𝒫 ∪ dom 𝑚((𝑚‘(𝑒 ∩ 𝑎)) +e (𝑚‘(𝑒 ∖ 𝑎))) = (𝑚‘𝑒)} = {𝑎 ∈ 𝒫 𝑂 ∣ ∀𝑒 ∈ 𝒫 𝑂((𝑀‘(𝑒 ∩ 𝑎)) +e (𝑀‘(𝑒 ∖ 𝑎))) = (𝑀‘𝑒)})
20		carsgval.1	. . . 4 ⊢ (𝜑 → 𝑂 ∈ 𝑉)
21	20	pwexd 5345	. . 3 ⊢ (𝜑 → 𝒫 𝑂 ∈ V)
22	4, 21	fexd 7253	. 2 ⊢ (𝜑 → 𝑀 ∈ V)
23		pwexg 5344	. . 3 ⊢ (𝑂 ∈ 𝑉 → 𝒫 𝑂 ∈ V)
24		rabexg 5303	. . 3 ⊢ (𝒫 𝑂 ∈ V → {𝑎 ∈ 𝒫 𝑂 ∣ ∀𝑒 ∈ 𝒫 𝑂((𝑀‘(𝑒 ∩ 𝑎)) +e (𝑀‘(𝑒 ∖ 𝑎))) = (𝑀‘𝑒)} ∈ V)
25	20, 23, 24	3syl 19	. 2 ⊢ (𝜑 → {𝑎 ∈ 𝒫 𝑂 ∣ ∀𝑒 ∈ 𝒫 𝑂((𝑀‘(𝑒 ∩ 𝑎)) +e (𝑀‘(𝑒 ∖ 𝑎))) = (𝑀‘𝑒)} ∈ V)
26	1, 19, 22, 25	fvmptd2 7022	1 ⊢ (𝜑 → (toCaraSiga‘𝑀) = {𝑎 ∈ 𝒫 𝑂 ∣ ∀𝑒 ∈ 𝒫 𝑂((𝑀‘(𝑒 ∩ 𝑎)) +e (𝑀‘(𝑒 ∖ 𝑎))) = (𝑀‘𝑒)})

This proof depends on syntax axioms:   → wi 4   ↔ wb 209   ∧ wa 401   = wceq 1570   ∈ wcel 2147  ∀wral 3080  {crab 3416  Vcvv 3454   ∖ cdif 4048   ∩ cin 4092  𝒫 cpw 4560  ∪ cuni 4870  dom cdm 5655  ⟶wf 6551  ‘cfv 6555  (class class class)co 7440  0cc0 11224  +∞cpnf 11364   +_e cxad 13263  [,]cicc 13503  toCaraSigaccarsg 35000

This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1945  ax-6 2002  ax-7 2043  ax-8 2149  ax-9 2157  ax-10 2180  ax-11 2197  ax-12 2216  ax-ext 2735  ax-rep 5235  ax-sep 5252  ax-nul 5263  ax-pow 5331  ax-pr 5395

This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-nf 1817  df-sb 2102  df-mo 2567  df-eu 2597  df-clab 2742  df-cleq 2755  df-clel 2839  df-nfc 2913  df-ne 2960  df-ral 3081  df-rex 3091  df-reu 3370  df-rab 3417  df-v 3456  df-sbc 3743  df-csb 3852  df-ss 3901  df-dif 4050  df-in 4094  df-un 4154  df-nul 4282  df-if 4486  df-pw 4562  df-sn 4589  df-pr 4591  df-op 4839  df-uni 4871  df-iun 4956  df-br 5107  df-opab 5171  df-mpt 5190  df-id 5550  df-xp 5661  df-rel 5662  df-cnv 5663  df-co 5664  df-dm 5665  df-rn 5666  df-res 5667  df-ima 5668  df-iota 6509  df-fun 6557  df-fn 6558  df-f 6559  df-f1 6560  df-fo 6561  df-f1o 6562  df-fv 6563  df-ov 7443  df-carsg 35001

This theorem is used by:  carsgcl  35003  elcarsg  35004