Theorem caragenuncl 45903

Description: The Caratheodory's construction is closed under the union. Step (c) in the proof of Theorem 113C of [Fremlin1] p. 20. (Contributed by Glauco Siliprandi, 17-Aug-2020.)

Hypotheses

Ref	Expression
caragenuncl.1	⊢ (𝜑 → 𝑂 ∈ OutMeas)
caragenuncl.2	⊢ 𝑆 = (CaraGen‘𝑂)
caragenuncl.3	⊢ (𝜑 → 𝐸 ∈ 𝑆)
caragenuncl.4	⊢ (𝜑 → 𝐹 ∈ 𝑆)

Assertion

Ref	Expression
caragenuncl	⊢ (𝜑 → (𝐸 ∪ 𝐹) ∈ 𝑆)

Proof of Theorem caragenuncl

Dummy variable 𝑎 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		caragenuncl.1	. 2 ⊢ (𝜑 → 𝑂 ∈ OutMeas)
2		eqid 2727	. 2 ⊢ ∪ dom 𝑂 = ∪ dom 𝑂
3		caragenuncl.2	. 2 ⊢ 𝑆 = (CaraGen‘𝑂)
4		caragenuncl.3	. . . . 5 ⊢ (𝜑 → 𝐸 ∈ 𝑆)
5	1, 3, 4, 2	caragenelss 45891	. . . 4 ⊢ (𝜑 → 𝐸 ⊆ ∪ dom 𝑂)
6		caragenuncl.4	. . . . 5 ⊢ (𝜑 → 𝐹 ∈ 𝑆)
7	1, 3, 6, 2	caragenelss 45891	. . . 4 ⊢ (𝜑 → 𝐹 ⊆ ∪ dom 𝑂)
8	5, 7	unssd 4186	. . 3 ⊢ (𝜑 → (𝐸 ∪ 𝐹) ⊆ ∪ dom 𝑂)
9	1, 2	unidmex 44417	. . . . 5 ⊢ (𝜑 → ∪ dom 𝑂 ∈ V)
10		ssexg 5325	. . . . 5 ⊢ (((𝐸 ∪ 𝐹) ⊆ ∪ dom 𝑂 ∧ ∪ dom 𝑂 ∈ V) → (𝐸 ∪ 𝐹) ∈ V)
11	8, 9, 10	syl2anc 582	. . . 4 ⊢ (𝜑 → (𝐸 ∪ 𝐹) ∈ V)
12		elpwg 4607	. . . 4 ⊢ ((𝐸 ∪ 𝐹) ∈ V → ((𝐸 ∪ 𝐹) ∈ 𝒫 ∪ dom 𝑂 ↔ (𝐸 ∪ 𝐹) ⊆ ∪ dom 𝑂))
13	11, 12	syl 17	. . 3 ⊢ (𝜑 → ((𝐸 ∪ 𝐹) ∈ 𝒫 ∪ dom 𝑂 ↔ (𝐸 ∪ 𝐹) ⊆ ∪ dom 𝑂))
14	8, 13	mpbird 256	. 2 ⊢ (𝜑 → (𝐸 ∪ 𝐹) ∈ 𝒫 ∪ dom 𝑂)
15	1	adantr 479	. . 3 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝒫 ∪ dom 𝑂) → 𝑂 ∈ OutMeas)
16	4	adantr 479	. . 3 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝒫 ∪ dom 𝑂) → 𝐸 ∈ 𝑆)
17	6	adantr 479	. . 3 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝒫 ∪ dom 𝑂) → 𝐹 ∈ 𝑆)
18		elpwi 4611	. . . 4 ⊢ (𝑎 ∈ 𝒫 ∪ dom 𝑂 → 𝑎 ⊆ ∪ dom 𝑂)
19	18	adantl 480	. . 3 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝒫 ∪ dom 𝑂) → 𝑎 ⊆ ∪ dom 𝑂)
20	15, 3, 16, 17, 2, 19	caragenuncllem 45902	. 2 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝒫 ∪ dom 𝑂) → ((𝑂‘(𝑎 ∩ (𝐸 ∪ 𝐹))) +𝑒 (𝑂‘(𝑎 ∖ (𝐸 ∪ 𝐹)))) = (𝑂‘𝑎))
21	1, 2, 3, 14, 20	carageneld 45892	1 ⊢ (𝜑 → (𝐸 ∪ 𝐹) ∈ 𝑆)

Syntax hints:   → wi 4   ↔ wb 205   ∧ wa 394   = wceq 1533   ∈ wcel 2098  Vcvv 3471   ∪ cun 3945   ⊆ wss 3947  𝒫 cpw 4604  ∪ cuni 4910  dom cdm 5680  ‘cfv 6551  OutMeascome 45879  CaraGenccaragen 45881

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1789  ax-4 1803  ax-5 1905  ax-6 1963  ax-7 2003  ax-8 2100  ax-9 2108  ax-10 2129  ax-11 2146  ax-12 2166  ax-ext 2698  ax-sep 5301  ax-nul 5308  ax-pow 5367  ax-pr 5431  ax-un 7744  ax-cnex 11200  ax-resscn 11201  ax-1cn 11202  ax-icn 11203  ax-addcl 11204  ax-addrcl 11205  ax-mulcl 11206  ax-addass 11209  ax-i2m1 11212  ax-rnegex 11215  ax-cnre 11217  ax-pre-lttri 11218  ax-pre-lttrn 11219

This theorem depends on definitions:  df-bi 206  df-an 395  df-or 846  df-3or 1085  df-3an 1086  df-tru 1536  df-fal 1546  df-ex 1774  df-nf 1778  df-sb 2060  df-mo 2529  df-eu 2558  df-clab 2705  df-cleq 2719  df-clel 2805  df-nfc 2880  df-ne 2937  df-nel 3043  df-ral 3058  df-rex 3067  df-rab 3429  df-v 3473  df-sbc 3777  df-csb 3893  df-dif 3950  df-un 3952  df-in 3954  df-ss 3964  df-nul 4325  df-if 4531  df-pw 4606  df-sn 4631  df-pr 4633  df-op 4637  df-uni 4911  df-iun 5000  df-br 5151  df-opab 5213  df-mpt 5234  df-id 5578  df-po 5592  df-so 5593  df-xp 5686  df-rel 5687  df-cnv 5688  df-co 5689  df-dm 5690  df-rn 5691  df-res 5692  df-ima 5693  df-iota 6503  df-fun 6553  df-fn 6554  df-f 6555  df-f1 6556  df-fo 6557  df-f1o 6558  df-fv 6559  df-ov 7427  df-oprab 7428  df-mpo 7429  df-1st 7997  df-2nd 7998  df-er 8729  df-en 8969  df-dom 8970  df-sdom 8971  df-pnf 11286  df-mnf 11287  df-xr 11288  df-ltxr 11289  df-le 11290  df-xadd 13131  df-icc 13369  df-ome 45880  df-caragen 45882

This theorem is referenced by:  caragenfiiuncl  45905

Otomatik - 173.255.232.114 CloudFlare DNS Türk Telekom DNS Google DNS Open DNS

OSZAR »