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Theorem stoweidlem41 42306
Description: This lemma is used to prove that there exists x as in Lemma 1 of [BrosowskiDeutsh] p. 90: 0 <= x(t) <= 1 for all t in T, x(t) < epsilon for all t in V, x(t) > 1 - epsilon for all t in T \ U. Here we prove the very last step of the proof of Lemma 1: "The result follows from taking x = 1 - qn";. Here 𝐸 is used to represent ε in the paper, and 𝑦 to represent qn in the paper. (Contributed by Glauco Siliprandi, 20-Apr-2017.)
Hypotheses
Ref Expression
stoweidlem41.1 𝑡𝜑
stoweidlem41.2 𝑋 = (𝑡𝑇 ↦ (1 − (𝑦𝑡)))
stoweidlem41.3 𝐹 = (𝑡𝑇 ↦ 1)
stoweidlem41.4 𝑉𝑇
stoweidlem41.5 (𝜑𝑦𝐴)
stoweidlem41.6 (𝜑𝑦:𝑇⟶ℝ)
stoweidlem41.7 ((𝜑𝑓𝐴) → 𝑓:𝑇⟶ℝ)
stoweidlem41.8 ((𝜑𝑓𝐴𝑔𝐴) → (𝑡𝑇 ↦ ((𝑓𝑡) + (𝑔𝑡))) ∈ 𝐴)
stoweidlem41.9 ((𝜑𝑓𝐴𝑔𝐴) → (𝑡𝑇 ↦ ((𝑓𝑡) · (𝑔𝑡))) ∈ 𝐴)
stoweidlem41.10 ((𝜑𝑤 ∈ ℝ) → (𝑡𝑇𝑤) ∈ 𝐴)
stoweidlem41.11 (𝜑𝐸 ∈ ℝ+)
stoweidlem41.12 (𝜑 → ∀𝑡𝑇 (0 ≤ (𝑦𝑡) ∧ (𝑦𝑡) ≤ 1))
stoweidlem41.13 (𝜑 → ∀𝑡𝑉 (1 − 𝐸) < (𝑦𝑡))
stoweidlem41.14 (𝜑 → ∀𝑡 ∈ (𝑇𝑈)(𝑦𝑡) < 𝐸)
Assertion
Ref Expression
stoweidlem41 (𝜑 → ∃𝑥𝐴 (∀𝑡𝑇 (0 ≤ (𝑥𝑡) ∧ (𝑥𝑡) ≤ 1) ∧ ∀𝑡𝑉 (𝑥𝑡) < 𝐸 ∧ ∀𝑡 ∈ (𝑇𝑈)(1 − 𝐸) < (𝑥𝑡)))
Distinct variable groups:   𝑓,𝑔,𝑡,𝑦   𝐴,𝑓,𝑔,𝑡   𝑓,𝐹,𝑔   𝑇,𝑓,𝑔,𝑡   𝜑,𝑓,𝑔   𝑤,𝑡,𝐴   𝑥,𝑡,𝐴   𝑤,𝑇   𝜑,𝑤   𝑥,𝐸   𝑥,𝑇   𝑥,𝑈   𝑥,𝑉   𝑥,𝑋
Allowed substitution hints:   𝜑(𝑥,𝑦,𝑡)   𝐴(𝑦)   𝑇(𝑦)   𝑈(𝑦,𝑤,𝑡,𝑓,𝑔)   𝐸(𝑦,𝑤,𝑡,𝑓,𝑔)   𝐹(𝑥,𝑦,𝑤,𝑡)   𝑉(𝑦,𝑤,𝑡,𝑓,𝑔)   𝑋(𝑦,𝑤,𝑡,𝑓,𝑔)

Proof of Theorem stoweidlem41
StepHypRef Expression
1 stoweidlem41.1 . . . . 5 𝑡𝜑
2 1re 10633 . . . . . . . 8 1 ∈ ℝ
3 stoweidlem41.3 . . . . . . . . 9 𝐹 = (𝑡𝑇 ↦ 1)
43fvmpt2 6772 . . . . . . . 8 ((𝑡𝑇 ∧ 1 ∈ ℝ) → (𝐹𝑡) = 1)
52, 4mpan2 689 . . . . . . 7 (𝑡𝑇 → (𝐹𝑡) = 1)
65adantl 484 . . . . . 6 ((𝜑𝑡𝑇) → (𝐹𝑡) = 1)
76oveq1d 7163 . . . . 5 ((𝜑𝑡𝑇) → ((𝐹𝑡) − (𝑦𝑡)) = (1 − (𝑦𝑡)))
81, 7mpteq2da 5151 . . . 4 (𝜑 → (𝑡𝑇 ↦ ((𝐹𝑡) − (𝑦𝑡))) = (𝑡𝑇 ↦ (1 − (𝑦𝑡))))
9 stoweidlem41.2 . . . 4 𝑋 = (𝑡𝑇 ↦ (1 − (𝑦𝑡)))
108, 9syl6eqr 2872 . . 3 (𝜑 → (𝑡𝑇 ↦ ((𝐹𝑡) − (𝑦𝑡))) = 𝑋)
11 stoweidlem41.10 . . . . . . 7 ((𝜑𝑤 ∈ ℝ) → (𝑡𝑇𝑤) ∈ 𝐴)
1211stoweidlem4 42269 . . . . . 6 ((𝜑 ∧ 1 ∈ ℝ) → (𝑡𝑇 ↦ 1) ∈ 𝐴)
132, 12mpan2 689 . . . . 5 (𝜑 → (𝑡𝑇 ↦ 1) ∈ 𝐴)
143, 13eqeltrid 2915 . . . 4 (𝜑𝐹𝐴)
15 stoweidlem41.5 . . . 4 (𝜑𝑦𝐴)
16 nfmpt1 5155 . . . . . 6 𝑡(𝑡𝑇 ↦ 1)
173, 16nfcxfr 2973 . . . . 5 𝑡𝐹
18 nfcv 2975 . . . . 5 𝑡𝑦
19 stoweidlem41.7 . . . . 5 ((𝜑𝑓𝐴) → 𝑓:𝑇⟶ℝ)
20 stoweidlem41.8 . . . . 5 ((𝜑𝑓𝐴𝑔𝐴) → (𝑡𝑇 ↦ ((𝑓𝑡) + (𝑔𝑡))) ∈ 𝐴)
21 stoweidlem41.9 . . . . 5 ((𝜑𝑓𝐴𝑔𝐴) → (𝑡𝑇 ↦ ((𝑓𝑡) · (𝑔𝑡))) ∈ 𝐴)
2217, 18, 1, 19, 20, 21, 11stoweidlem33 42298 . . . 4 ((𝜑𝐹𝐴𝑦𝐴) → (𝑡𝑇 ↦ ((𝐹𝑡) − (𝑦𝑡))) ∈ 𝐴)
2314, 15, 22mpd3an23 1456 . . 3 (𝜑 → (𝑡𝑇 ↦ ((𝐹𝑡) − (𝑦𝑡))) ∈ 𝐴)
2410, 23eqeltrrd 2912 . 2 (𝜑𝑋𝐴)
25 stoweidlem41.6 . . . . . . . 8 (𝜑𝑦:𝑇⟶ℝ)
2625ffvelrnda 6844 . . . . . . 7 ((𝜑𝑡𝑇) → (𝑦𝑡) ∈ ℝ)
27 1red 10634 . . . . . . 7 ((𝜑𝑡𝑇) → 1 ∈ ℝ)
28 0red 10636 . . . . . . 7 ((𝜑𝑡𝑇) → 0 ∈ ℝ)
29 stoweidlem41.12 . . . . . . . . . 10 (𝜑 → ∀𝑡𝑇 (0 ≤ (𝑦𝑡) ∧ (𝑦𝑡) ≤ 1))
3029r19.21bi 3206 . . . . . . . . 9 ((𝜑𝑡𝑇) → (0 ≤ (𝑦𝑡) ∧ (𝑦𝑡) ≤ 1))
3130simprd 498 . . . . . . . 8 ((𝜑𝑡𝑇) → (𝑦𝑡) ≤ 1)
32 1m0e1 11750 . . . . . . . 8 (1 − 0) = 1
3331, 32breqtrrdi 5099 . . . . . . 7 ((𝜑𝑡𝑇) → (𝑦𝑡) ≤ (1 − 0))
3426, 27, 28, 33lesubd 11236 . . . . . 6 ((𝜑𝑡𝑇) → 0 ≤ (1 − (𝑦𝑡)))
35 simpr 487 . . . . . . 7 ((𝜑𝑡𝑇) → 𝑡𝑇)
3627, 26resubcld 11060 . . . . . . 7 ((𝜑𝑡𝑇) → (1 − (𝑦𝑡)) ∈ ℝ)
379fvmpt2 6772 . . . . . . 7 ((𝑡𝑇 ∧ (1 − (𝑦𝑡)) ∈ ℝ) → (𝑋𝑡) = (1 − (𝑦𝑡)))
3835, 36, 37syl2anc 586 . . . . . 6 ((𝜑𝑡𝑇) → (𝑋𝑡) = (1 − (𝑦𝑡)))
3934, 38breqtrrd 5085 . . . . 5 ((𝜑𝑡𝑇) → 0 ≤ (𝑋𝑡))
4030simpld 497 . . . . . . . 8 ((𝜑𝑡𝑇) → 0 ≤ (𝑦𝑡))
4128, 26, 27, 40lesub2dd 11249 . . . . . . 7 ((𝜑𝑡𝑇) → (1 − (𝑦𝑡)) ≤ (1 − 0))
4241, 32breqtrdi 5098 . . . . . 6 ((𝜑𝑡𝑇) → (1 − (𝑦𝑡)) ≤ 1)
4338, 42eqbrtrd 5079 . . . . 5 ((𝜑𝑡𝑇) → (𝑋𝑡) ≤ 1)
4439, 43jca 514 . . . 4 ((𝜑𝑡𝑇) → (0 ≤ (𝑋𝑡) ∧ (𝑋𝑡) ≤ 1))
4544ex 415 . . 3 (𝜑 → (𝑡𝑇 → (0 ≤ (𝑋𝑡) ∧ (𝑋𝑡) ≤ 1)))
461, 45ralrimi 3214 . 2 (𝜑 → ∀𝑡𝑇 (0 ≤ (𝑋𝑡) ∧ (𝑋𝑡) ≤ 1))
47 stoweidlem41.4 . . . . . . 7 𝑉𝑇
4847sseli 3961 . . . . . 6 (𝑡𝑉𝑡𝑇)
4948, 38sylan2 594 . . . . 5 ((𝜑𝑡𝑉) → (𝑋𝑡) = (1 − (𝑦𝑡)))
50 1red 10634 . . . . . 6 ((𝜑𝑡𝑉) → 1 ∈ ℝ)
51 stoweidlem41.11 . . . . . . . 8 (𝜑𝐸 ∈ ℝ+)
5251rpred 12423 . . . . . . 7 (𝜑𝐸 ∈ ℝ)
5352adantr 483 . . . . . 6 ((𝜑𝑡𝑉) → 𝐸 ∈ ℝ)
5448, 26sylan2 594 . . . . . 6 ((𝜑𝑡𝑉) → (𝑦𝑡) ∈ ℝ)
55 stoweidlem41.13 . . . . . . 7 (𝜑 → ∀𝑡𝑉 (1 − 𝐸) < (𝑦𝑡))
5655r19.21bi 3206 . . . . . 6 ((𝜑𝑡𝑉) → (1 − 𝐸) < (𝑦𝑡))
5750, 53, 54, 56ltsub23d 11237 . . . . 5 ((𝜑𝑡𝑉) → (1 − (𝑦𝑡)) < 𝐸)
5849, 57eqbrtrd 5079 . . . 4 ((𝜑𝑡𝑉) → (𝑋𝑡) < 𝐸)
5958ex 415 . . 3 (𝜑 → (𝑡𝑉 → (𝑋𝑡) < 𝐸))
601, 59ralrimi 3214 . 2 (𝜑 → ∀𝑡𝑉 (𝑋𝑡) < 𝐸)
61 eldifi 4101 . . . . . . 7 (𝑡 ∈ (𝑇𝑈) → 𝑡𝑇)
6261, 26sylan2 594 . . . . . 6 ((𝜑𝑡 ∈ (𝑇𝑈)) → (𝑦𝑡) ∈ ℝ)
6352adantr 483 . . . . . 6 ((𝜑𝑡 ∈ (𝑇𝑈)) → 𝐸 ∈ ℝ)
64 1red 10634 . . . . . 6 ((𝜑𝑡 ∈ (𝑇𝑈)) → 1 ∈ ℝ)
65 stoweidlem41.14 . . . . . . 7 (𝜑 → ∀𝑡 ∈ (𝑇𝑈)(𝑦𝑡) < 𝐸)
6665r19.21bi 3206 . . . . . 6 ((𝜑𝑡 ∈ (𝑇𝑈)) → (𝑦𝑡) < 𝐸)
6762, 63, 64, 66ltsub2dd 11245 . . . . 5 ((𝜑𝑡 ∈ (𝑇𝑈)) → (1 − 𝐸) < (1 − (𝑦𝑡)))
6861, 38sylan2 594 . . . . 5 ((𝜑𝑡 ∈ (𝑇𝑈)) → (𝑋𝑡) = (1 − (𝑦𝑡)))
6967, 68breqtrrd 5085 . . . 4 ((𝜑𝑡 ∈ (𝑇𝑈)) → (1 − 𝐸) < (𝑋𝑡))
7069ex 415 . . 3 (𝜑 → (𝑡 ∈ (𝑇𝑈) → (1 − 𝐸) < (𝑋𝑡)))
711, 70ralrimi 3214 . 2 (𝜑 → ∀𝑡 ∈ (𝑇𝑈)(1 − 𝐸) < (𝑋𝑡))
72 nfmpt1 5155 . . . . . . 7 𝑡(𝑡𝑇 ↦ (1 − (𝑦𝑡)))
739, 72nfcxfr 2973 . . . . . 6 𝑡𝑋
7473nfeq2 2993 . . . . 5 𝑡 𝑥 = 𝑋
75 fveq1 6662 . . . . . . 7 (𝑥 = 𝑋 → (𝑥𝑡) = (𝑋𝑡))
7675breq2d 5069 . . . . . 6 (𝑥 = 𝑋 → (0 ≤ (𝑥𝑡) ↔ 0 ≤ (𝑋𝑡)))
7775breq1d 5067 . . . . . 6 (𝑥 = 𝑋 → ((𝑥𝑡) ≤ 1 ↔ (𝑋𝑡) ≤ 1))
7876, 77anbi12d 632 . . . . 5 (𝑥 = 𝑋 → ((0 ≤ (𝑥𝑡) ∧ (𝑥𝑡) ≤ 1) ↔ (0 ≤ (𝑋𝑡) ∧ (𝑋𝑡) ≤ 1)))
7974, 78ralbid 3229 . . . 4 (𝑥 = 𝑋 → (∀𝑡𝑇 (0 ≤ (𝑥𝑡) ∧ (𝑥𝑡) ≤ 1) ↔ ∀𝑡𝑇 (0 ≤ (𝑋𝑡) ∧ (𝑋𝑡) ≤ 1)))
8075breq1d 5067 . . . . 5 (𝑥 = 𝑋 → ((𝑥𝑡) < 𝐸 ↔ (𝑋𝑡) < 𝐸))
8174, 80ralbid 3229 . . . 4 (𝑥 = 𝑋 → (∀𝑡𝑉 (𝑥𝑡) < 𝐸 ↔ ∀𝑡𝑉 (𝑋𝑡) < 𝐸))
8275breq2d 5069 . . . . 5 (𝑥 = 𝑋 → ((1 − 𝐸) < (𝑥𝑡) ↔ (1 − 𝐸) < (𝑋𝑡)))
8374, 82ralbid 3229 . . . 4 (𝑥 = 𝑋 → (∀𝑡 ∈ (𝑇𝑈)(1 − 𝐸) < (𝑥𝑡) ↔ ∀𝑡 ∈ (𝑇𝑈)(1 − 𝐸) < (𝑋𝑡)))
8479, 81, 833anbi123d 1429 . . 3 (𝑥 = 𝑋 → ((∀𝑡𝑇 (0 ≤ (𝑥𝑡) ∧ (𝑥𝑡) ≤ 1) ∧ ∀𝑡𝑉 (𝑥𝑡) < 𝐸 ∧ ∀𝑡 ∈ (𝑇𝑈)(1 − 𝐸) < (𝑥𝑡)) ↔ (∀𝑡𝑇 (0 ≤ (𝑋𝑡) ∧ (𝑋𝑡) ≤ 1) ∧ ∀𝑡𝑉 (𝑋𝑡) < 𝐸 ∧ ∀𝑡 ∈ (𝑇𝑈)(1 − 𝐸) < (𝑋𝑡))))
8584rspcev 3621 . 2 ((𝑋𝐴 ∧ (∀𝑡𝑇 (0 ≤ (𝑋𝑡) ∧ (𝑋𝑡) ≤ 1) ∧ ∀𝑡𝑉 (𝑋𝑡) < 𝐸 ∧ ∀𝑡 ∈ (𝑇𝑈)(1 − 𝐸) < (𝑋𝑡))) → ∃𝑥𝐴 (∀𝑡𝑇 (0 ≤ (𝑥𝑡) ∧ (𝑥𝑡) ≤ 1) ∧ ∀𝑡𝑉 (𝑥𝑡) < 𝐸 ∧ ∀𝑡 ∈ (𝑇𝑈)(1 − 𝐸) < (𝑥𝑡)))
8624, 46, 60, 71, 85syl13anc 1366 1 (𝜑 → ∃𝑥𝐴 (∀𝑡𝑇 (0 ≤ (𝑥𝑡) ∧ (𝑥𝑡) ≤ 1) ∧ ∀𝑡𝑉 (𝑥𝑡) < 𝐸 ∧ ∀𝑡 ∈ (𝑇𝑈)(1 − 𝐸) < (𝑥𝑡)))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 398  w3a 1081   = wceq 1530  wnf 1777  wcel 2107  wral 3136  wrex 3137  cdif 3931  wss 3934   class class class wbr 5057  cmpt 5137  wf 6344  cfv 6348  (class class class)co 7148  cr 10528  0cc0 10529  1c1 10530   + caddc 10532   · cmul 10534   < clt 10667  cle 10668  cmin 10862  +crp 12381
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 1904  ax-6 1963  ax-7 2008  ax-8 2109  ax-9 2117  ax-10 2138  ax-11 2153  ax-12 2169  ax-ext 2791  ax-sep 5194  ax-nul 5201  ax-pow 5257  ax-pr 5320  ax-un 7453  ax-resscn 10586  ax-1cn 10587  ax-icn 10588  ax-addcl 10589  ax-addrcl 10590  ax-mulcl 10591  ax-mulrcl 10592  ax-mulcom 10593  ax-addass 10594  ax-mulass 10595  ax-distr 10596  ax-i2m1 10597  ax-1ne0 10598  ax-1rid 10599  ax-rnegex 10600  ax-rrecex 10601  ax-cnre 10602  ax-pre-lttri 10603  ax-pre-lttrn 10604  ax-pre-ltadd 10605
This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3or 1082  df-3an 1083  df-tru 1533  df-ex 1774  df-nf 1778  df-sb 2063  df-mo 2616  df-eu 2648  df-clab 2798  df-cleq 2812  df-clel 2891  df-nfc 2961  df-ne 3015  df-nel 3122  df-ral 3141  df-rex 3142  df-reu 3143  df-rab 3145  df-v 3495  df-sbc 3771  df-csb 3882  df-dif 3937  df-un 3939  df-in 3941  df-ss 3950  df-nul 4290  df-if 4466  df-pw 4539  df-sn 4560  df-pr 4562  df-op 4566  df-uni 4831  df-br 5058  df-opab 5120  df-mpt 5138  df-id 5453  df-po 5467  df-so 5468  df-xp 5554  df-rel 5555  df-cnv 5556  df-co 5557  df-dm 5558  df-rn 5559  df-res 5560  df-ima 5561  df-iota 6307  df-fun 6350  df-fn 6351  df-f 6352  df-f1 6353  df-fo 6354  df-f1o 6355  df-fv 6356  df-riota 7106  df-ov 7151  df-oprab 7152  df-mpo 7153  df-er 8281  df-en 8502  df-dom 8503  df-sdom 8504  df-pnf 10669  df-mnf 10670  df-xr 10671  df-ltxr 10672  df-le 10673  df-sub 10864  df-neg 10865  df-rp 12382
This theorem is referenced by:  stoweidlem52  42317
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