Theorem carsgval 30365

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 30364	. . 3 ⊢ toCaraSiga = (𝑚 ∈ V ↦ {𝑎 ∈ 𝒫 ∪ dom 𝑚 ∣ ∀𝑒 ∈ 𝒫 ∪ dom 𝑚((𝑚‘(𝑒 ∩ 𝑎)) +𝑒 (𝑚‘(𝑒 ∖ 𝑎))) = (𝑚‘𝑒)})
2	1	a1i 11	. 2 ⊢ (𝜑 → toCaraSiga = (𝑚 ∈ V ↦ {𝑎 ∈ 𝒫 ∪ dom 𝑚 ∣ ∀𝑒 ∈ 𝒫 ∪ dom 𝑚((𝑚‘(𝑒 ∩ 𝑎)) +𝑒 (𝑚‘(𝑒 ∖ 𝑎))) = (𝑚‘𝑒)}))
3		simpr 477	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑚 = 𝑀) → 𝑚 = 𝑀)
4	3	dmeqd 5326	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑚 = 𝑀) → dom 𝑚 = dom 𝑀)
5		carsgval.2	. . . . . . . . 9 ⊢ (𝜑 → 𝑀:𝒫 𝑂⟶(0[,]+∞))
6		fdm 6051	. . . . . . . . 9 ⊢ (𝑀:𝒫 𝑂⟶(0[,]+∞) → dom 𝑀 = 𝒫 𝑂)
7	5, 6	syl 17	. . . . . . . 8 ⊢ (𝜑 → dom 𝑀 = 𝒫 𝑂)
8	7	adantr 481	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑚 = 𝑀) → dom 𝑀 = 𝒫 𝑂)
9	4, 8	eqtrd 2656	. . . . . 6 ⊢ ((𝜑 ∧ 𝑚 = 𝑀) → dom 𝑚 = 𝒫 𝑂)
10	9	unieqd 4446	. . . . 5 ⊢ ((𝜑 ∧ 𝑚 = 𝑀) → ∪ dom 𝑚 = ∪ 𝒫 𝑂)
11		unipw 4918	. . . . 5 ⊢ ∪ 𝒫 𝑂 = 𝑂
12	10, 11	syl6eq 2672	. . . 4 ⊢ ((𝜑 ∧ 𝑚 = 𝑀) → ∪ dom 𝑚 = 𝑂)
13	12	pweqd 4163	. . 3 ⊢ ((𝜑 ∧ 𝑚 = 𝑀) → 𝒫 ∪ dom 𝑚 = 𝒫 𝑂)
14		fveq1 6190	. . . . . . 7 ⊢ (𝑚 = 𝑀 → (𝑚‘(𝑒 ∩ 𝑎)) = (𝑀‘(𝑒 ∩ 𝑎)))
15		fveq1 6190	. . . . . . 7 ⊢ (𝑚 = 𝑀 → (𝑚‘(𝑒 ∖ 𝑎)) = (𝑀‘(𝑒 ∖ 𝑎)))
16	14, 15	oveq12d 6668	. . . . . 6 ⊢ (𝑚 = 𝑀 → ((𝑚‘(𝑒 ∩ 𝑎)) +𝑒 (𝑚‘(𝑒 ∖ 𝑎))) = ((𝑀‘(𝑒 ∩ 𝑎)) +𝑒 (𝑀‘(𝑒 ∖ 𝑎))))
17		fveq1 6190	. . . . . 6 ⊢ (𝑚 = 𝑀 → (𝑚‘𝑒) = (𝑀‘𝑒))
18	16, 17	eqeq12d 2637	. . . . 5 ⊢ (𝑚 = 𝑀 → (((𝑚‘(𝑒 ∩ 𝑎)) +𝑒 (𝑚‘(𝑒 ∖ 𝑎))) = (𝑚‘𝑒) ↔ ((𝑀‘(𝑒 ∩ 𝑎)) +𝑒 (𝑀‘(𝑒 ∖ 𝑎))) = (𝑀‘𝑒)))
19	18	adantl 482	. . . 4 ⊢ ((𝜑 ∧ 𝑚 = 𝑀) → (((𝑚‘(𝑒 ∩ 𝑎)) +𝑒 (𝑚‘(𝑒 ∖ 𝑎))) = (𝑚‘𝑒) ↔ ((𝑀‘(𝑒 ∩ 𝑎)) +𝑒 (𝑀‘(𝑒 ∖ 𝑎))) = (𝑀‘𝑒)))
20	13, 19	raleqbidv 3152	. . 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)))
21	13, 20	rabeqbidv 3195	. 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)})
22		carsgval.1	. . . 4 ⊢ (𝜑 → 𝑂 ∈ 𝑉)
23		pwexg 4850	. . . 4 ⊢ (𝑂 ∈ 𝑉 → 𝒫 𝑂 ∈ V)
24	22, 23	syl 17	. . 3 ⊢ (𝜑 → 𝒫 𝑂 ∈ V)
25		fex 6490	. . 3 ⊢ ((𝑀:𝒫 𝑂⟶(0[,]+∞) ∧ 𝒫 𝑂 ∈ V) → 𝑀 ∈ V)
26	5, 24, 25	syl2anc 693	. 2 ⊢ (𝜑 → 𝑀 ∈ V)
27		rabexg 4812	. . 3 ⊢ (𝒫 𝑂 ∈ V → {𝑎 ∈ 𝒫 𝑂 ∣ ∀𝑒 ∈ 𝒫 𝑂((𝑀‘(𝑒 ∩ 𝑎)) +𝑒 (𝑀‘(𝑒 ∖ 𝑎))) = (𝑀‘𝑒)} ∈ V)
28	22, 23, 27	3syl 18	. 2 ⊢ (𝜑 → {𝑎 ∈ 𝒫 𝑂 ∣ ∀𝑒 ∈ 𝒫 𝑂((𝑀‘(𝑒 ∩ 𝑎)) +𝑒 (𝑀‘(𝑒 ∖ 𝑎))) = (𝑀‘𝑒)} ∈ V)
29	2, 21, 26, 28	fvmptd 6288	1 ⊢ (𝜑 → (toCaraSiga‘𝑀) = {𝑎 ∈ 𝒫 𝑂 ∣ ∀𝑒 ∈ 𝒫 𝑂((𝑀‘(𝑒 ∩ 𝑎)) +𝑒 (𝑀‘(𝑒 ∖ 𝑎))) = (𝑀‘𝑒)})

Syntax hints:   → wi 4   ↔ wb 196   ∧ wa 384   = wceq 1483   ∈ wcel 1990  ∀wral 2912  {crab 2916  Vcvv 3200   ∖ cdif 3571   ∩ cin 3573  𝒫 cpw 4158  ∪ cuni 4436   ↦ cmpt 4729  dom cdm 5114  ⟶wf 5884  ‘cfv 5888  (class class class)co 6650  0cc0 9936  +∞cpnf 10071   +_𝑒 cxad 11944  [,]cicc 12178  toCaraSigaccarsg 30363

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-rep 4771  ax-sep 4781  ax-nul 4789  ax-pow 4843  ax-pr 4906

This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ne 2795  df-ral 2917  df-rex 2918  df-reu 2919  df-rab 2921  df-v 3202  df-sbc 3436  df-csb 3534  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-nul 3916  df-if 4087  df-pw 4160  df-sn 4178  df-pr 4180  df-op 4184  df-uni 4437  df-iun 4522  df-br 4654  df-opab 4713  df-mpt 4730  df-id 5024  df-xp 5120  df-rel 5121  df-cnv 5122  df-co 5123  df-dm 5124  df-rn 5125  df-res 5126  df-ima 5127  df-iota 5851  df-fun 5890  df-fn 5891  df-f 5892  df-f1 5893  df-fo 5894  df-f1o 5895  df-fv 5896  df-ov 6653  df-carsg 30364

This theorem is referenced by:  carsgcl  30366  elcarsg  30367