Theorem vitalilem1OLD 23183

Description: Obsolete proof of vitalilem1 23182 as of 1-May-2021. Lemma for vitali 23188. (Contributed by Mario Carneiro, 16-Jun-2014.) (Proof modification is discouraged.) (New usage is discouraged.)

Hypothesis

Ref	Expression
vitali.1	⊢ ∼ = {⟨𝑥, 𝑦⟩ ∣ ((𝑥 ∈ (0[,]1) ∧ 𝑦 ∈ (0[,]1)) ∧ (𝑥 − 𝑦) ∈ ℚ)}

Assertion

Ref	Expression
vitalilem1OLD	⊢ ∼ Er (0[,]1)

Distinct variable group:   𝑥,𝑦, ∼

Proof of Theorem vitalilem1OLD

Dummy variables 𝑣 𝑤 𝑢 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		vitali.1	. . . . 5 ⊢ ∼ = {⟨𝑥, 𝑦⟩ ∣ ((𝑥 ∈ (0[,]1) ∧ 𝑦 ∈ (0[,]1)) ∧ (𝑥 − 𝑦) ∈ ℚ)}
2	1	relopabi 5167	. . . 4 ⊢ Rel ∼
3	2	a1i 11	. . 3 ⊢ (⊤ → Rel ∼ )
4		simplr 788	. . . . . 6 ⊢ (((𝑢 ∈ (0[,]1) ∧ 𝑣 ∈ (0[,]1)) ∧ (𝑢 − 𝑣) ∈ ℚ) → 𝑣 ∈ (0[,]1))
5		simpll 786	. . . . . 6 ⊢ (((𝑢 ∈ (0[,]1) ∧ 𝑣 ∈ (0[,]1)) ∧ (𝑢 − 𝑣) ∈ ℚ) → 𝑢 ∈ (0[,]1))
6		unitssre 12190	. . . . . . . . . . 11 ⊢ (0[,]1) ⊆ ℝ
7	6	sseli 3564	. . . . . . . . . 10 ⊢ (𝑢 ∈ (0[,]1) → 𝑢 ∈ ℝ)
8	7	recnd 9947	. . . . . . . . 9 ⊢ (𝑢 ∈ (0[,]1) → 𝑢 ∈ ℂ)
9	8	ad2antrr 758	. . . . . . . 8 ⊢ (((𝑢 ∈ (0[,]1) ∧ 𝑣 ∈ (0[,]1)) ∧ (𝑢 − 𝑣) ∈ ℚ) → 𝑢 ∈ ℂ)
10	6	sseli 3564	. . . . . . . . . 10 ⊢ (𝑣 ∈ (0[,]1) → 𝑣 ∈ ℝ)
11	10	recnd 9947	. . . . . . . . 9 ⊢ (𝑣 ∈ (0[,]1) → 𝑣 ∈ ℂ)
12	11	ad2antlr 759	. . . . . . . 8 ⊢ (((𝑢 ∈ (0[,]1) ∧ 𝑣 ∈ (0[,]1)) ∧ (𝑢 − 𝑣) ∈ ℚ) → 𝑣 ∈ ℂ)
13	9, 12	negsubdi2d 10287	. . . . . . 7 ⊢ (((𝑢 ∈ (0[,]1) ∧ 𝑣 ∈ (0[,]1)) ∧ (𝑢 − 𝑣) ∈ ℚ) → -(𝑢 − 𝑣) = (𝑣 − 𝑢))
14		qnegcl 11681	. . . . . . . 8 ⊢ ((𝑢 − 𝑣) ∈ ℚ → -(𝑢 − 𝑣) ∈ ℚ)
15	14	adantl 481	. . . . . . 7 ⊢ (((𝑢 ∈ (0[,]1) ∧ 𝑣 ∈ (0[,]1)) ∧ (𝑢 − 𝑣) ∈ ℚ) → -(𝑢 − 𝑣) ∈ ℚ)
16	13, 15	eqeltrrd 2689	. . . . . 6 ⊢ (((𝑢 ∈ (0[,]1) ∧ 𝑣 ∈ (0[,]1)) ∧ (𝑢 − 𝑣) ∈ ℚ) → (𝑣 − 𝑢) ∈ ℚ)
17	4, 5, 16	jca31 555	. . . . 5 ⊢ (((𝑢 ∈ (0[,]1) ∧ 𝑣 ∈ (0[,]1)) ∧ (𝑢 − 𝑣) ∈ ℚ) → ((𝑣 ∈ (0[,]1) ∧ 𝑢 ∈ (0[,]1)) ∧ (𝑣 − 𝑢) ∈ ℚ))
18		oveq12 6558	. . . . . . 7 ⊢ ((𝑥 = 𝑢 ∧ 𝑦 = 𝑣) → (𝑥 − 𝑦) = (𝑢 − 𝑣))
19	18	eleq1d 2672	. . . . . 6 ⊢ ((𝑥 = 𝑢 ∧ 𝑦 = 𝑣) → ((𝑥 − 𝑦) ∈ ℚ ↔ (𝑢 − 𝑣) ∈ ℚ))
20	19, 1	brab2ga 5117	. . . . 5 ⊢ (𝑢 ∼ 𝑣 ↔ ((𝑢 ∈ (0[,]1) ∧ 𝑣 ∈ (0[,]1)) ∧ (𝑢 − 𝑣) ∈ ℚ))
21		oveq12 6558	. . . . . . 7 ⊢ ((𝑥 = 𝑣 ∧ 𝑦 = 𝑢) → (𝑥 − 𝑦) = (𝑣 − 𝑢))
22	21	eleq1d 2672	. . . . . 6 ⊢ ((𝑥 = 𝑣 ∧ 𝑦 = 𝑢) → ((𝑥 − 𝑦) ∈ ℚ ↔ (𝑣 − 𝑢) ∈ ℚ))
23	22, 1	brab2ga 5117	. . . . 5 ⊢ (𝑣 ∼ 𝑢 ↔ ((𝑣 ∈ (0[,]1) ∧ 𝑢 ∈ (0[,]1)) ∧ (𝑣 − 𝑢) ∈ ℚ))
24	17, 20, 23	3imtr4i 280	. . . 4 ⊢ (𝑢 ∼ 𝑣 → 𝑣 ∼ 𝑢)
25	24	adantl 481	. . 3 ⊢ ((⊤ ∧ 𝑢 ∼ 𝑣) → 𝑣 ∼ 𝑢)
26		simpl 472	. . . . . . . . 9 ⊢ ((𝑢 ∼ 𝑣 ∧ 𝑣 ∼ 𝑤) → 𝑢 ∼ 𝑣)
27	26, 20	sylib 207	. . . . . . . 8 ⊢ ((𝑢 ∼ 𝑣 ∧ 𝑣 ∼ 𝑤) → ((𝑢 ∈ (0[,]1) ∧ 𝑣 ∈ (0[,]1)) ∧ (𝑢 − 𝑣) ∈ ℚ))
28	27	simpld 474	. . . . . . 7 ⊢ ((𝑢 ∼ 𝑣 ∧ 𝑣 ∼ 𝑤) → (𝑢 ∈ (0[,]1) ∧ 𝑣 ∈ (0[,]1)))
29	28	simpld 474	. . . . . 6 ⊢ ((𝑢 ∼ 𝑣 ∧ 𝑣 ∼ 𝑤) → 𝑢 ∈ (0[,]1))
30		simpr 476	. . . . . . . . 9 ⊢ ((𝑢 ∼ 𝑣 ∧ 𝑣 ∼ 𝑤) → 𝑣 ∼ 𝑤)
31		oveq12 6558	. . . . . . . . . . 11 ⊢ ((𝑥 = 𝑣 ∧ 𝑦 = 𝑤) → (𝑥 − 𝑦) = (𝑣 − 𝑤))
32	31	eleq1d 2672	. . . . . . . . . 10 ⊢ ((𝑥 = 𝑣 ∧ 𝑦 = 𝑤) → ((𝑥 − 𝑦) ∈ ℚ ↔ (𝑣 − 𝑤) ∈ ℚ))
33	32, 1	brab2ga 5117	. . . . . . . . 9 ⊢ (𝑣 ∼ 𝑤 ↔ ((𝑣 ∈ (0[,]1) ∧ 𝑤 ∈ (0[,]1)) ∧ (𝑣 − 𝑤) ∈ ℚ))
34	30, 33	sylib 207	. . . . . . . 8 ⊢ ((𝑢 ∼ 𝑣 ∧ 𝑣 ∼ 𝑤) → ((𝑣 ∈ (0[,]1) ∧ 𝑤 ∈ (0[,]1)) ∧ (𝑣 − 𝑤) ∈ ℚ))
35	34	simpld 474	. . . . . . 7 ⊢ ((𝑢 ∼ 𝑣 ∧ 𝑣 ∼ 𝑤) → (𝑣 ∈ (0[,]1) ∧ 𝑤 ∈ (0[,]1)))
36	35	simprd 478	. . . . . 6 ⊢ ((𝑢 ∼ 𝑣 ∧ 𝑣 ∼ 𝑤) → 𝑤 ∈ (0[,]1))
37	29, 36	jca 553	. . . . 5 ⊢ ((𝑢 ∼ 𝑣 ∧ 𝑣 ∼ 𝑤) → (𝑢 ∈ (0[,]1) ∧ 𝑤 ∈ (0[,]1)))
38	29, 8	syl 17	. . . . . . 7 ⊢ ((𝑢 ∼ 𝑣 ∧ 𝑣 ∼ 𝑤) → 𝑢 ∈ ℂ)
39	27, 12	syl 17	. . . . . . 7 ⊢ ((𝑢 ∼ 𝑣 ∧ 𝑣 ∼ 𝑤) → 𝑣 ∈ ℂ)
40	6, 36	sseldi 3566	. . . . . . . 8 ⊢ ((𝑢 ∼ 𝑣 ∧ 𝑣 ∼ 𝑤) → 𝑤 ∈ ℝ)
41	40	recnd 9947	. . . . . . 7 ⊢ ((𝑢 ∼ 𝑣 ∧ 𝑣 ∼ 𝑤) → 𝑤 ∈ ℂ)
42	38, 39, 41	npncand 10295	. . . . . 6 ⊢ ((𝑢 ∼ 𝑣 ∧ 𝑣 ∼ 𝑤) → ((𝑢 − 𝑣) + (𝑣 − 𝑤)) = (𝑢 − 𝑤))
43	27	simprd 478	. . . . . . 7 ⊢ ((𝑢 ∼ 𝑣 ∧ 𝑣 ∼ 𝑤) → (𝑢 − 𝑣) ∈ ℚ)
44	34	simprd 478	. . . . . . 7 ⊢ ((𝑢 ∼ 𝑣 ∧ 𝑣 ∼ 𝑤) → (𝑣 − 𝑤) ∈ ℚ)
45		qaddcl 11680	. . . . . . 7 ⊢ (((𝑢 − 𝑣) ∈ ℚ ∧ (𝑣 − 𝑤) ∈ ℚ) → ((𝑢 − 𝑣) + (𝑣 − 𝑤)) ∈ ℚ)
46	43, 44, 45	syl2anc 691	. . . . . 6 ⊢ ((𝑢 ∼ 𝑣 ∧ 𝑣 ∼ 𝑤) → ((𝑢 − 𝑣) + (𝑣 − 𝑤)) ∈ ℚ)
47	42, 46	eqeltrrd 2689	. . . . 5 ⊢ ((𝑢 ∼ 𝑣 ∧ 𝑣 ∼ 𝑤) → (𝑢 − 𝑤) ∈ ℚ)
48		oveq12 6558	. . . . . . 7 ⊢ ((𝑥 = 𝑢 ∧ 𝑦 = 𝑤) → (𝑥 − 𝑦) = (𝑢 − 𝑤))
49	48	eleq1d 2672	. . . . . 6 ⊢ ((𝑥 = 𝑢 ∧ 𝑦 = 𝑤) → ((𝑥 − 𝑦) ∈ ℚ ↔ (𝑢 − 𝑤) ∈ ℚ))
50	49, 1	brab2ga 5117	. . . . 5 ⊢ (𝑢 ∼ 𝑤 ↔ ((𝑢 ∈ (0[,]1) ∧ 𝑤 ∈ (0[,]1)) ∧ (𝑢 − 𝑤) ∈ ℚ))
51	37, 47, 50	sylanbrc 695	. . . 4 ⊢ ((𝑢 ∼ 𝑣 ∧ 𝑣 ∼ 𝑤) → 𝑢 ∼ 𝑤)
52	51	adantl 481	. . 3 ⊢ ((⊤ ∧ (𝑢 ∼ 𝑣 ∧ 𝑣 ∼ 𝑤)) → 𝑢 ∼ 𝑤)
53	8	subidd 10259	. . . . . . . 8 ⊢ (𝑢 ∈ (0[,]1) → (𝑢 − 𝑢) = 0)
54		0z 11265	. . . . . . . . 9 ⊢ 0 ∈ ℤ
55		zq 11670	. . . . . . . . 9 ⊢ (0 ∈ ℤ → 0 ∈ ℚ)
56	54, 55	ax-mp 5	. . . . . . . 8 ⊢ 0 ∈ ℚ
57	53, 56	syl6eqel 2696	. . . . . . 7 ⊢ (𝑢 ∈ (0[,]1) → (𝑢 − 𝑢) ∈ ℚ)
58	57	adantr 480	. . . . . 6 ⊢ ((𝑢 ∈ (0[,]1) ∧ 𝑢 ∈ (0[,]1)) → (𝑢 − 𝑢) ∈ ℚ)
59	58	pm4.71i 662	. . . . 5 ⊢ ((𝑢 ∈ (0[,]1) ∧ 𝑢 ∈ (0[,]1)) ↔ ((𝑢 ∈ (0[,]1) ∧ 𝑢 ∈ (0[,]1)) ∧ (𝑢 − 𝑢) ∈ ℚ))
60		pm4.24 673	. . . . 5 ⊢ (𝑢 ∈ (0[,]1) ↔ (𝑢 ∈ (0[,]1) ∧ 𝑢 ∈ (0[,]1)))
61		oveq12 6558	. . . . . . 7 ⊢ ((𝑥 = 𝑢 ∧ 𝑦 = 𝑢) → (𝑥 − 𝑦) = (𝑢 − 𝑢))
62	61	eleq1d 2672	. . . . . 6 ⊢ ((𝑥 = 𝑢 ∧ 𝑦 = 𝑢) → ((𝑥 − 𝑦) ∈ ℚ ↔ (𝑢 − 𝑢) ∈ ℚ))
63	62, 1	brab2ga 5117	. . . . 5 ⊢ (𝑢 ∼ 𝑢 ↔ ((𝑢 ∈ (0[,]1) ∧ 𝑢 ∈ (0[,]1)) ∧ (𝑢 − 𝑢) ∈ ℚ))
64	59, 60, 63	3bitr4i 291	. . . 4 ⊢ (𝑢 ∈ (0[,]1) ↔ 𝑢 ∼ 𝑢)
65	64	a1i 11	. . 3 ⊢ (⊤ → (𝑢 ∈ (0[,]1) ↔ 𝑢 ∼ 𝑢))
66	3, 25, 52, 65	iserd 7655	. 2 ⊢ (⊤ → ∼ Er (0[,]1))
67	66	trud 1484	1 ⊢ ∼ Er (0[,]1)

Syntax hints:   ↔ wb 195   ∧ wa 383   = wceq 1475  ⊤wtru 1476   ∈ wcel 1977   class class class wbr 4583  {copab 4642  Rel wrel 5043  (class class class)co 6549   Er wer 7626  ℂcc 9813  ℝcr 9814  0cc0 9815  1c1 9816   + caddc 9818   − cmin 10145  -cneg 10146  ℤcz 11254  ℚcq 11664  [,]cicc 12049

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-8 1979  ax-9 1986  ax-10 2006  ax-11 2021  ax-12 2034  ax-13 2234  ax-ext 2590  ax-sep 4709  ax-nul 4717  ax-pow 4769  ax-pr 4833  ax-un 6847  ax-cnex 9871  ax-resscn 9872  ax-1cn 9873  ax-icn 9874  ax-addcl 9875  ax-addrcl 9876  ax-mulcl 9877  ax-mulrcl 9878  ax-mulcom 9879  ax-addass 9880  ax-mulass 9881  ax-distr 9882  ax-i2m1 9883  ax-1ne0 9884  ax-1rid 9885  ax-rnegex 9886  ax-rrecex 9887  ax-cnre 9888  ax-pre-lttri 9889  ax-pre-lttrn 9890  ax-pre-ltadd 9891  ax-pre-mulgt0 9892

This theorem depends on definitions:  df-bi 196  df-or 384  df-an 385  df-3or 1032  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-nel 2783  df-ral 2901  df-rex 2902  df-reu 2903  df-rmo 2904  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-pss 3556  df-nul 3875  df-if 4037  df-pw 4110  df-sn 4126  df-pr 4128  df-tp 4130  df-op 4132  df-uni 4373  df-iun 4457  df-br 4584  df-opab 4644  df-mpt 4645  df-tr 4681  df-eprel 4949  df-id 4953  df-po 4959  df-so 4960  df-fr 4997  df-we 4999  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-pred 5597  df-ord 5643  df-on 5644  df-lim 5645  df-suc 5646  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-riota 6511  df-ov 6552  df-oprab 6553  df-mpt2 6554  df-om 6958  df-1st 7059  df-2nd 7060  df-wrecs 7294  df-recs 7355  df-rdg 7393  df-er 7629  df-en 7842  df-dom 7843  df-sdom 7844  df-pnf 9955  df-mnf 9956  df-xr 9957  df-ltxr 9958  df-le 9959  df-sub 10147  df-neg 10148  df-div 10564  df-nn 10898  df-n0 11170  df-z 11255  df-q 11665  df-icc 12053

This theorem is referenced by: (None)