Theorem dstfrvunirn 32125

Description: The limit of all preimage maps by the "less than or equal to" relation is the universe. (Contributed by Thierry Arnoux, 12-Feb-2017.)

Hypotheses

Ref	Expression
dstfrv.1	⊢ (𝜑 → 𝑃 ∈ Prob)
dstfrv.2	⊢ (𝜑 → 𝑋 ∈ (rRndVar‘𝑃))

Assertion

Ref	Expression
dstfrvunirn	⊢ (𝜑 → ∪ ran (𝑛 ∈ ℕ ↦ (𝑋∘RV/𝑐 ≤ 𝑛)) = ∪ dom 𝑃)

Distinct variable groups:   𝑃,𝑛   𝑛,𝑋   𝜑,𝑛

Proof of Theorem dstfrvunirn

Dummy variable 𝑥 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		1red 10817	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑥 ∈ ∪ dom 𝑃) → 1 ∈ ℝ)
2		dstfrv.1	. . . . . . . . . . . 12 ⊢ (𝜑 → 𝑃 ∈ Prob)
3		dstfrv.2	. . . . . . . . . . . 12 ⊢ (𝜑 → 𝑋 ∈ (rRndVar‘𝑃))
4	2, 3	rrvvf 32095	. . . . . . . . . . 11 ⊢ (𝜑 → 𝑋:∪ dom 𝑃⟶ℝ)
5	4	ffvelrnda 6893	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑥 ∈ ∪ dom 𝑃) → (𝑋‘𝑥) ∈ ℝ)
6	1, 5	ifcld 4475	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑥 ∈ ∪ dom 𝑃) → if((𝑋‘𝑥) < 1, 1, (𝑋‘𝑥)) ∈ ℝ)
7		breq2 5047	. . . . . . . . . 10 ⊢ (1 = if((𝑋‘𝑥) < 1, 1, (𝑋‘𝑥)) → (1 ≤ 1 ↔ 1 ≤ if((𝑋‘𝑥) < 1, 1, (𝑋‘𝑥))))
8		breq2 5047	. . . . . . . . . 10 ⊢ ((𝑋‘𝑥) = if((𝑋‘𝑥) < 1, 1, (𝑋‘𝑥)) → (1 ≤ (𝑋‘𝑥) ↔ 1 ≤ if((𝑋‘𝑥) < 1, 1, (𝑋‘𝑥))))
9		1le1 11443	. . . . . . . . . . 11 ⊢ 1 ≤ 1
10	9	a1i 11	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝑥 ∈ ∪ dom 𝑃) ∧ (𝑋‘𝑥) < 1) → 1 ≤ 1)
11	1, 5	lenltd 10961	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑥 ∈ ∪ dom 𝑃) → (1 ≤ (𝑋‘𝑥) ↔ ¬ (𝑋‘𝑥) < 1))
12	11	biimpar 481	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝑥 ∈ ∪ dom 𝑃) ∧ ¬ (𝑋‘𝑥) < 1) → 1 ≤ (𝑋‘𝑥))
13	7, 8, 10, 12	ifbothda 4467	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑥 ∈ ∪ dom 𝑃) → 1 ≤ if((𝑋‘𝑥) < 1, 1, (𝑋‘𝑥)))
14		flge1nn 13379	. . . . . . . . 9 ⊢ ((if((𝑋‘𝑥) < 1, 1, (𝑋‘𝑥)) ∈ ℝ ∧ 1 ≤ if((𝑋‘𝑥) < 1, 1, (𝑋‘𝑥))) → (⌊‘if((𝑋‘𝑥) < 1, 1, (𝑋‘𝑥))) ∈ ℕ)
15	6, 13, 14	syl2anc 587	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ ∪ dom 𝑃) → (⌊‘if((𝑋‘𝑥) < 1, 1, (𝑋‘𝑥))) ∈ ℕ)
16	15	peano2nnd 11830	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ ∪ dom 𝑃) → ((⌊‘if((𝑋‘𝑥) < 1, 1, (𝑋‘𝑥))) + 1) ∈ ℕ)
17	2	adantr 484	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ ∪ dom 𝑃) → 𝑃 ∈ Prob)
18	3	adantr 484	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ ∪ dom 𝑃) → 𝑋 ∈ (rRndVar‘𝑃))
19	16	nnred 11828	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ ∪ dom 𝑃) → ((⌊‘if((𝑋‘𝑥) < 1, 1, (𝑋‘𝑥))) + 1) ∈ ℝ)
20		simpr 488	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ ∪ dom 𝑃) → 𝑥 ∈ ∪ dom 𝑃)
21		breq2 5047	. . . . . . . . . 10 ⊢ (1 = if((𝑋‘𝑥) < 1, 1, (𝑋‘𝑥)) → ((𝑋‘𝑥) ≤ 1 ↔ (𝑋‘𝑥) ≤ if((𝑋‘𝑥) < 1, 1, (𝑋‘𝑥))))
22		breq2 5047	. . . . . . . . . 10 ⊢ ((𝑋‘𝑥) = if((𝑋‘𝑥) < 1, 1, (𝑋‘𝑥)) → ((𝑋‘𝑥) ≤ (𝑋‘𝑥) ↔ (𝑋‘𝑥) ≤ if((𝑋‘𝑥) < 1, 1, (𝑋‘𝑥))))
23	5	adantr 484	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑥 ∈ ∪ dom 𝑃) ∧ (𝑋‘𝑥) < 1) → (𝑋‘𝑥) ∈ ℝ)
24		1red 10817	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑥 ∈ ∪ dom 𝑃) ∧ (𝑋‘𝑥) < 1) → 1 ∈ ℝ)
25		simpr 488	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑥 ∈ ∪ dom 𝑃) ∧ (𝑋‘𝑥) < 1) → (𝑋‘𝑥) < 1)
26	23, 24, 25	ltled 10963	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝑥 ∈ ∪ dom 𝑃) ∧ (𝑋‘𝑥) < 1) → (𝑋‘𝑥) ≤ 1)
27	5	leidd 11381	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑥 ∈ ∪ dom 𝑃) → (𝑋‘𝑥) ≤ (𝑋‘𝑥))
28	27	adantr 484	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝑥 ∈ ∪ dom 𝑃) ∧ ¬ (𝑋‘𝑥) < 1) → (𝑋‘𝑥) ≤ (𝑋‘𝑥))
29	21, 22, 26, 28	ifbothda 4467	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑥 ∈ ∪ dom 𝑃) → (𝑋‘𝑥) ≤ if((𝑋‘𝑥) < 1, 1, (𝑋‘𝑥)))
30		fllep1 13359	. . . . . . . . . 10 ⊢ (if((𝑋‘𝑥) < 1, 1, (𝑋‘𝑥)) ∈ ℝ → if((𝑋‘𝑥) < 1, 1, (𝑋‘𝑥)) ≤ ((⌊‘if((𝑋‘𝑥) < 1, 1, (𝑋‘𝑥))) + 1))
31	6, 30	syl 17	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑥 ∈ ∪ dom 𝑃) → if((𝑋‘𝑥) < 1, 1, (𝑋‘𝑥)) ≤ ((⌊‘if((𝑋‘𝑥) < 1, 1, (𝑋‘𝑥))) + 1))
32	5, 6, 19, 29, 31	letrd 10972	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ ∪ dom 𝑃) → (𝑋‘𝑥) ≤ ((⌊‘if((𝑋‘𝑥) < 1, 1, (𝑋‘𝑥))) + 1))
33	17, 18, 19, 20, 32	dstfrvel 32124	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ ∪ dom 𝑃) → 𝑥 ∈ (𝑋∘RV/𝑐 ≤ ((⌊‘if((𝑋‘𝑥) < 1, 1, (𝑋‘𝑥))) + 1)))
34		oveq2 7210	. . . . . . . . 9 ⊢ (𝑛 = ((⌊‘if((𝑋‘𝑥) < 1, 1, (𝑋‘𝑥))) + 1) → (𝑋∘RV/𝑐 ≤ 𝑛) = (𝑋∘RV/𝑐 ≤ ((⌊‘if((𝑋‘𝑥) < 1, 1, (𝑋‘𝑥))) + 1)))
35	34	eleq2d 2819	. . . . . . . 8 ⊢ (𝑛 = ((⌊‘if((𝑋‘𝑥) < 1, 1, (𝑋‘𝑥))) + 1) → (𝑥 ∈ (𝑋∘RV/𝑐 ≤ 𝑛) ↔ 𝑥 ∈ (𝑋∘RV/𝑐 ≤ ((⌊‘if((𝑋‘𝑥) < 1, 1, (𝑋‘𝑥))) + 1))))
36	35	rspcev 3530	. . . . . . 7 ⊢ ((((⌊‘if((𝑋‘𝑥) < 1, 1, (𝑋‘𝑥))) + 1) ∈ ℕ ∧ 𝑥 ∈ (𝑋∘RV/𝑐 ≤ ((⌊‘if((𝑋‘𝑥) < 1, 1, (𝑋‘𝑥))) + 1))) → ∃𝑛 ∈ ℕ 𝑥 ∈ (𝑋∘RV/𝑐 ≤ 𝑛))
37	16, 33, 36	syl2anc 587	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ ∪ dom 𝑃) → ∃𝑛 ∈ ℕ 𝑥 ∈ (𝑋∘RV/𝑐 ≤ 𝑛))
38	37	ex 416	. . . . 5 ⊢ (𝜑 → (𝑥 ∈ ∪ dom 𝑃 → ∃𝑛 ∈ ℕ 𝑥 ∈ (𝑋∘RV/𝑐 ≤ 𝑛)))
39	2	adantr 484	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑛 ∈ ℕ) → 𝑃 ∈ Prob)
40	3	adantr 484	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑛 ∈ ℕ) → 𝑋 ∈ (rRndVar‘𝑃))
41		simpr 488	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑛 ∈ ℕ) → 𝑛 ∈ ℕ)
42	41	nnred 11828	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑛 ∈ ℕ) → 𝑛 ∈ ℝ)
43	39, 40, 42	orvclteel 32123	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑛 ∈ ℕ) → (𝑋∘RV/𝑐 ≤ 𝑛) ∈ dom 𝑃)
44		elunii 4814	. . . . . . . 8 ⊢ ((𝑥 ∈ (𝑋∘RV/𝑐 ≤ 𝑛) ∧ (𝑋∘RV/𝑐 ≤ 𝑛) ∈ dom 𝑃) → 𝑥 ∈ ∪ dom 𝑃)
45	44	expcom 417	. . . . . . 7 ⊢ ((𝑋∘RV/𝑐 ≤ 𝑛) ∈ dom 𝑃 → (𝑥 ∈ (𝑋∘RV/𝑐 ≤ 𝑛) → 𝑥 ∈ ∪ dom 𝑃))
46	43, 45	syl 17	. . . . . 6 ⊢ ((𝜑 ∧ 𝑛 ∈ ℕ) → (𝑥 ∈ (𝑋∘RV/𝑐 ≤ 𝑛) → 𝑥 ∈ ∪ dom 𝑃))
47	46	rexlimdva 3196	. . . . 5 ⊢ (𝜑 → (∃𝑛 ∈ ℕ 𝑥 ∈ (𝑋∘RV/𝑐 ≤ 𝑛) → 𝑥 ∈ ∪ dom 𝑃))
48	38, 47	impbid 215	. . . 4 ⊢ (𝜑 → (𝑥 ∈ ∪ dom 𝑃 ↔ ∃𝑛 ∈ ℕ 𝑥 ∈ (𝑋∘RV/𝑐 ≤ 𝑛)))
49		eliun 4898	. . . 4 ⊢ (𝑥 ∈ ∪ 𝑛 ∈ ℕ (𝑋∘RV/𝑐 ≤ 𝑛) ↔ ∃𝑛 ∈ ℕ 𝑥 ∈ (𝑋∘RV/𝑐 ≤ 𝑛))
50	48, 49	bitr4di 292	. . 3 ⊢ (𝜑 → (𝑥 ∈ ∪ dom 𝑃 ↔ 𝑥 ∈ ∪ 𝑛 ∈ ℕ (𝑋∘RV/𝑐 ≤ 𝑛)))
51	50	eqrdv 2732	. 2 ⊢ (𝜑 → ∪ dom 𝑃 = ∪ 𝑛 ∈ ℕ (𝑋∘RV/𝑐 ≤ 𝑛))
52		ovex 7235	. . 3 ⊢ (𝑋∘RV/𝑐 ≤ 𝑛) ∈ V
53	52	dfiun3 5824	. 2 ⊢ ∪ 𝑛 ∈ ℕ (𝑋∘RV/𝑐 ≤ 𝑛) = ∪ ran (𝑛 ∈ ℕ ↦ (𝑋∘RV/𝑐 ≤ 𝑛))
54	51, 53	eqtr2di 2791	1 ⊢ (𝜑 → ∪ ran (𝑛 ∈ ℕ ↦ (𝑋∘RV/𝑐 ≤ 𝑛)) = ∪ dom 𝑃)

Syntax hints:  ¬ wn 3   → wi 4   ∧ wa 399   = wceq 1543   ∈ wcel 2110  ∃wrex 3055  ifcif 4429  ∪ cuni 4809  ∪ ciun 4894   class class class wbr 5043   ↦ cmpt 5124  dom cdm 5540  ran crn 5541  ‘cfv 6369  (class class class)co 7202  ℝcr 10711  1c1 10713   + caddc 10715   < clt 10850   ≤ cle 10851  ℕcn 11813  ⌊cfl 13348  Probcprb 32058  rRndVarcrrv 32091  ∘_RV/𝑐corvc 32106

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1803  ax-4 1817  ax-5 1918  ax-6 1976  ax-7 2016  ax-8 2112  ax-9 2120  ax-10 2141  ax-11 2158  ax-12 2175  ax-ext 2706  ax-rep 5168  ax-sep 5181  ax-nul 5188  ax-pow 5247  ax-pr 5311  ax-un 7512  ax-inf2 9245  ax-ac2 10060  ax-cnex 10768  ax-resscn 10769  ax-1cn 10770  ax-icn 10771  ax-addcl 10772  ax-addrcl 10773  ax-mulcl 10774  ax-mulrcl 10775  ax-mulcom 10776  ax-addass 10777  ax-mulass 10778  ax-distr 10779  ax-i2m1 10780  ax-1ne0 10781  ax-1rid 10782  ax-rnegex 10783  ax-rrecex 10784  ax-cnre 10785  ax-pre-lttri 10786  ax-pre-lttrn 10787  ax-pre-ltadd 10788  ax-pre-mulgt0 10789  ax-pre-sup 10790

This theorem depends on definitions:  df-bi 210  df-an 400  df-or 848  df-3or 1090  df-3an 1091  df-tru 1546  df-fal 1556  df-ex 1788  df-nf 1792  df-sb 2071  df-mo 2537  df-eu 2566  df-clab 2713  df-cleq 2726  df-clel 2812  df-nfc 2882  df-ne 2936  df-nel 3040  df-ral 3059  df-rex 3060  df-reu 3061  df-rmo 3062  df-rab 3063  df-v 3403  df-sbc 3688  df-csb 3803  df-dif 3860  df-un 3862  df-in 3864  df-ss 3874  df-pss 3876  df-nul 4228  df-if 4430  df-pw 4505  df-sn 4532  df-pr 4534  df-tp 4536  df-op 4538  df-uni 4810  df-int 4850  df-iun 4896  df-iin 4897  df-br 5044  df-opab 5106  df-mpt 5125  df-tr 5151  df-id 5444  df-eprel 5449  df-po 5457  df-so 5458  df-fr 5498  df-se 5499  df-we 5500  df-xp 5546  df-rel 5547  df-cnv 5548  df-co 5549  df-dm 5550  df-rn 5551  df-res 5552  df-ima 5553  df-pred 6149  df-ord 6205  df-on 6206  df-lim 6207  df-suc 6208  df-iota 6327  df-fun 6371  df-fn 6372  df-f 6373  df-f1 6374  df-fo 6375  df-f1o 6376  df-fv 6377  df-isom 6378  df-riota 7159  df-ov 7205  df-oprab 7206  df-mpo 7207  df-om 7634  df-1st 7750  df-2nd 7751  df-wrecs 8036  df-recs 8097  df-rdg 8135  df-1o 8191  df-2o 8192  df-er 8380  df-map 8499  df-en 8616  df-dom 8617  df-sdom 8618  df-fin 8619  df-sup 9047  df-inf 9048  df-oi 9115  df-dju 9500  df-card 9538  df-acn 9541  df-ac 9713  df-pnf 10852  df-mnf 10853  df-xr 10854  df-ltxr 10855  df-le 10856  df-sub 11047  df-neg 11048  df-div 11473  df-nn 11814  df-n0 12074  df-z 12160  df-uz 12422  df-q 12528  df-ioo 12922  df-ioc 12923  df-fl 13350  df-topgen 16920  df-top 21763  df-bases 21815  df-cld 21888  df-esum 31680  df-siga 31761  df-sigagen 31791  df-brsiga 31834  df-meas 31848  df-mbfm 31902  df-prob 32059  df-rrv 32092  df-orvc 32107

This theorem is referenced by:  dstfrvclim1  32128