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Theorem minvecolem2 28654
 Description: Lemma for minveco 28663. Any two points 𝐾 and 𝐿 in 𝑌 are close to each other if they are close to the infimum of distance to 𝐴. (Contributed by Mario Carneiro, 9-May-2014.) (Revised by AV, 4-Oct-2020.) (New usage is discouraged.)
Hypotheses
Ref Expression
minveco.x 𝑋 = (BaseSet‘𝑈)
minveco.m 𝑀 = ( −𝑣𝑈)
minveco.n 𝑁 = (normCV𝑈)
minveco.y 𝑌 = (BaseSet‘𝑊)
minveco.u (𝜑𝑈 ∈ CPreHilOLD)
minveco.w (𝜑𝑊 ∈ ((SubSp‘𝑈) ∩ CBan))
minveco.a (𝜑𝐴𝑋)
minveco.d 𝐷 = (IndMet‘𝑈)
minveco.j 𝐽 = (MetOpen‘𝐷)
minveco.r 𝑅 = ran (𝑦𝑌 ↦ (𝑁‘(𝐴𝑀𝑦)))
minveco.s 𝑆 = inf(𝑅, ℝ, < )
minvecolem2.1 (𝜑𝐵 ∈ ℝ)
minvecolem2.2 (𝜑 → 0 ≤ 𝐵)
minvecolem2.3 (𝜑𝐾𝑌)
minvecolem2.4 (𝜑𝐿𝑌)
minvecolem2.5 (𝜑 → ((𝐴𝐷𝐾)↑2) ≤ ((𝑆↑2) + 𝐵))
minvecolem2.6 (𝜑 → ((𝐴𝐷𝐿)↑2) ≤ ((𝑆↑2) + 𝐵))
Assertion
Ref Expression
minvecolem2 (𝜑 → ((𝐾𝐷𝐿)↑2) ≤ (4 · 𝐵))
Distinct variable groups:   𝑦,𝐽   𝑦,𝐾   𝑦,𝐿   𝑦,𝑀   𝑦,𝑁   𝜑,𝑦   𝑦,𝑆   𝑦,𝐴   𝑦,𝐷   𝑦,𝑈   𝑦,𝑊   𝑦,𝑌
Allowed substitution hints:   𝐵(𝑦)   𝑅(𝑦)   𝑋(𝑦)

Proof of Theorem minvecolem2
Dummy variables 𝑥 𝑤 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 4re 11714 . . . . . 6 4 ∈ ℝ
2 minveco.s . . . . . . . 8 𝑆 = inf(𝑅, ℝ, < )
3 minveco.x . . . . . . . . . . 11 𝑋 = (BaseSet‘𝑈)
4 minveco.m . . . . . . . . . . 11 𝑀 = ( −𝑣𝑈)
5 minveco.n . . . . . . . . . . 11 𝑁 = (normCV𝑈)
6 minveco.y . . . . . . . . . . 11 𝑌 = (BaseSet‘𝑊)
7 minveco.u . . . . . . . . . . 11 (𝜑𝑈 ∈ CPreHilOLD)
8 minveco.w . . . . . . . . . . 11 (𝜑𝑊 ∈ ((SubSp‘𝑈) ∩ CBan))
9 minveco.a . . . . . . . . . . 11 (𝜑𝐴𝑋)
10 minveco.d . . . . . . . . . . 11 𝐷 = (IndMet‘𝑈)
11 minveco.j . . . . . . . . . . 11 𝐽 = (MetOpen‘𝐷)
12 minveco.r . . . . . . . . . . 11 𝑅 = ran (𝑦𝑌 ↦ (𝑁‘(𝐴𝑀𝑦)))
133, 4, 5, 6, 7, 8, 9, 10, 11, 12minvecolem1 28653 . . . . . . . . . 10 (𝜑 → (𝑅 ⊆ ℝ ∧ 𝑅 ≠ ∅ ∧ ∀𝑤𝑅 0 ≤ 𝑤))
1413simp1d 1139 . . . . . . . . 9 (𝜑𝑅 ⊆ ℝ)
1513simp2d 1140 . . . . . . . . 9 (𝜑𝑅 ≠ ∅)
16 0re 10635 . . . . . . . . . 10 0 ∈ ℝ
1713simp3d 1141 . . . . . . . . . 10 (𝜑 → ∀𝑤𝑅 0 ≤ 𝑤)
18 breq1 5055 . . . . . . . . . . . 12 (𝑥 = 0 → (𝑥𝑤 ↔ 0 ≤ 𝑤))
1918ralbidv 3192 . . . . . . . . . . 11 (𝑥 = 0 → (∀𝑤𝑅 𝑥𝑤 ↔ ∀𝑤𝑅 0 ≤ 𝑤))
2019rspcev 3609 . . . . . . . . . 10 ((0 ∈ ℝ ∧ ∀𝑤𝑅 0 ≤ 𝑤) → ∃𝑥 ∈ ℝ ∀𝑤𝑅 𝑥𝑤)
2116, 17, 20sylancr 590 . . . . . . . . 9 (𝜑 → ∃𝑥 ∈ ℝ ∀𝑤𝑅 𝑥𝑤)
22 infrecl 11615 . . . . . . . . 9 ((𝑅 ⊆ ℝ ∧ 𝑅 ≠ ∅ ∧ ∃𝑥 ∈ ℝ ∀𝑤𝑅 𝑥𝑤) → inf(𝑅, ℝ, < ) ∈ ℝ)
2314, 15, 21, 22syl3anc 1368 . . . . . . . 8 (𝜑 → inf(𝑅, ℝ, < ) ∈ ℝ)
242, 23eqeltrid 2920 . . . . . . 7 (𝜑𝑆 ∈ ℝ)
2524resqcld 13612 . . . . . 6 (𝜑 → (𝑆↑2) ∈ ℝ)
26 remulcl 10614 . . . . . 6 ((4 ∈ ℝ ∧ (𝑆↑2) ∈ ℝ) → (4 · (𝑆↑2)) ∈ ℝ)
271, 25, 26sylancr 590 . . . . 5 (𝜑 → (4 · (𝑆↑2)) ∈ ℝ)
28 phnv 28593 . . . . . . . . 9 (𝑈 ∈ CPreHilOLD𝑈 ∈ NrmCVec)
297, 28syl 17 . . . . . . . 8 (𝜑𝑈 ∈ NrmCVec)
303, 10imsmet 28470 . . . . . . . 8 (𝑈 ∈ NrmCVec → 𝐷 ∈ (Met‘𝑋))
3129, 30syl 17 . . . . . . 7 (𝜑𝐷 ∈ (Met‘𝑋))
32 inss1 4189 . . . . . . . . . 10 ((SubSp‘𝑈) ∩ CBan) ⊆ (SubSp‘𝑈)
3332, 8sseldi 3950 . . . . . . . . 9 (𝜑𝑊 ∈ (SubSp‘𝑈))
34 eqid 2824 . . . . . . . . . 10 (SubSp‘𝑈) = (SubSp‘𝑈)
353, 6, 34sspba 28506 . . . . . . . . 9 ((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ (SubSp‘𝑈)) → 𝑌𝑋)
3629, 33, 35syl2anc 587 . . . . . . . 8 (𝜑𝑌𝑋)
37 minvecolem2.3 . . . . . . . 8 (𝜑𝐾𝑌)
3836, 37sseldd 3953 . . . . . . 7 (𝜑𝐾𝑋)
39 minvecolem2.4 . . . . . . . 8 (𝜑𝐿𝑌)
4036, 39sseldd 3953 . . . . . . 7 (𝜑𝐿𝑋)
41 metcl 22935 . . . . . . 7 ((𝐷 ∈ (Met‘𝑋) ∧ 𝐾𝑋𝐿𝑋) → (𝐾𝐷𝐿) ∈ ℝ)
4231, 38, 40, 41syl3anc 1368 . . . . . 6 (𝜑 → (𝐾𝐷𝐿) ∈ ℝ)
4342resqcld 13612 . . . . 5 (𝜑 → ((𝐾𝐷𝐿)↑2) ∈ ℝ)
4427, 43readdcld 10662 . . . 4 (𝜑 → ((4 · (𝑆↑2)) + ((𝐾𝐷𝐿)↑2)) ∈ ℝ)
45 ax-1cn 10587 . . . . . . . . . . . . 13 1 ∈ ℂ
46 halfcl 11855 . . . . . . . . . . . . 13 (1 ∈ ℂ → (1 / 2) ∈ ℂ)
4745, 46mp1i 13 . . . . . . . . . . . 12 (𝜑 → (1 / 2) ∈ ℂ)
48 eqid 2824 . . . . . . . . . . . . . . 15 ( +𝑣𝑈) = ( +𝑣𝑈)
49 eqid 2824 . . . . . . . . . . . . . . 15 ( +𝑣𝑊) = ( +𝑣𝑊)
506, 48, 49, 34sspgval 28508 . . . . . . . . . . . . . 14 (((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ (SubSp‘𝑈)) ∧ (𝐾𝑌𝐿𝑌)) → (𝐾( +𝑣𝑊)𝐿) = (𝐾( +𝑣𝑈)𝐿))
5129, 33, 37, 39, 50syl22anc 837 . . . . . . . . . . . . 13 (𝜑 → (𝐾( +𝑣𝑊)𝐿) = (𝐾( +𝑣𝑈)𝐿))
5234sspnv 28505 . . . . . . . . . . . . . . 15 ((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ (SubSp‘𝑈)) → 𝑊 ∈ NrmCVec)
5329, 33, 52syl2anc 587 . . . . . . . . . . . . . 14 (𝜑𝑊 ∈ NrmCVec)
546, 49nvgcl 28399 . . . . . . . . . . . . . 14 ((𝑊 ∈ NrmCVec ∧ 𝐾𝑌𝐿𝑌) → (𝐾( +𝑣𝑊)𝐿) ∈ 𝑌)
5553, 37, 39, 54syl3anc 1368 . . . . . . . . . . . . 13 (𝜑 → (𝐾( +𝑣𝑊)𝐿) ∈ 𝑌)
5651, 55eqeltrrd 2917 . . . . . . . . . . . 12 (𝜑 → (𝐾( +𝑣𝑈)𝐿) ∈ 𝑌)
57 eqid 2824 . . . . . . . . . . . . 13 ( ·𝑠OLD𝑈) = ( ·𝑠OLD𝑈)
58 eqid 2824 . . . . . . . . . . . . 13 ( ·𝑠OLD𝑊) = ( ·𝑠OLD𝑊)
596, 57, 58, 34sspsval 28510 . . . . . . . . . . . 12 (((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ (SubSp‘𝑈)) ∧ ((1 / 2) ∈ ℂ ∧ (𝐾( +𝑣𝑈)𝐿) ∈ 𝑌)) → ((1 / 2)( ·𝑠OLD𝑊)(𝐾( +𝑣𝑈)𝐿)) = ((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))
6029, 33, 47, 56, 59syl22anc 837 . . . . . . . . . . 11 (𝜑 → ((1 / 2)( ·𝑠OLD𝑊)(𝐾( +𝑣𝑈)𝐿)) = ((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))
616, 58nvscl 28405 . . . . . . . . . . . 12 ((𝑊 ∈ NrmCVec ∧ (1 / 2) ∈ ℂ ∧ (𝐾( +𝑣𝑈)𝐿) ∈ 𝑌) → ((1 / 2)( ·𝑠OLD𝑊)(𝐾( +𝑣𝑈)𝐿)) ∈ 𝑌)
6253, 47, 56, 61syl3anc 1368 . . . . . . . . . . 11 (𝜑 → ((1 / 2)( ·𝑠OLD𝑊)(𝐾( +𝑣𝑈)𝐿)) ∈ 𝑌)
6360, 62eqeltrrd 2917 . . . . . . . . . 10 (𝜑 → ((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)) ∈ 𝑌)
6436, 63sseldd 3953 . . . . . . . . 9 (𝜑 → ((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)) ∈ 𝑋)
653, 4nvmcl 28425 . . . . . . . . 9 ((𝑈 ∈ NrmCVec ∧ 𝐴𝑋 ∧ ((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)) ∈ 𝑋) → (𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))) ∈ 𝑋)
6629, 9, 64, 65syl3anc 1368 . . . . . . . 8 (𝜑 → (𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))) ∈ 𝑋)
673, 5nvcl 28440 . . . . . . . 8 ((𝑈 ∈ NrmCVec ∧ (𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))) ∈ 𝑋) → (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))) ∈ ℝ)
6829, 66, 67syl2anc 587 . . . . . . 7 (𝜑 → (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))) ∈ ℝ)
6968resqcld 13612 . . . . . 6 (𝜑 → ((𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))↑2) ∈ ℝ)
70 remulcl 10614 . . . . . 6 ((4 ∈ ℝ ∧ ((𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))↑2) ∈ ℝ) → (4 · ((𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))↑2)) ∈ ℝ)
711, 69, 70sylancr 590 . . . . 5 (𝜑 → (4 · ((𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))↑2)) ∈ ℝ)
7271, 43readdcld 10662 . . . 4 (𝜑 → ((4 · ((𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))↑2)) + ((𝐾𝐷𝐿)↑2)) ∈ ℝ)
73 minvecolem2.1 . . . . . 6 (𝜑𝐵 ∈ ℝ)
7425, 73readdcld 10662 . . . . 5 (𝜑 → ((𝑆↑2) + 𝐵) ∈ ℝ)
75 remulcl 10614 . . . . 5 ((4 ∈ ℝ ∧ ((𝑆↑2) + 𝐵) ∈ ℝ) → (4 · ((𝑆↑2) + 𝐵)) ∈ ℝ)
761, 74, 75sylancr 590 . . . 4 (𝜑 → (4 · ((𝑆↑2) + 𝐵)) ∈ ℝ)
7716a1i 11 . . . . . . . . . 10 (𝜑 → 0 ∈ ℝ)
78 infregelb 11617 . . . . . . . . . 10 (((𝑅 ⊆ ℝ ∧ 𝑅 ≠ ∅ ∧ ∃𝑥 ∈ ℝ ∀𝑤𝑅 𝑥𝑤) ∧ 0 ∈ ℝ) → (0 ≤ inf(𝑅, ℝ, < ) ↔ ∀𝑤𝑅 0 ≤ 𝑤))
7914, 15, 21, 77, 78syl31anc 1370 . . . . . . . . 9 (𝜑 → (0 ≤ inf(𝑅, ℝ, < ) ↔ ∀𝑤𝑅 0 ≤ 𝑤))
8017, 79mpbird 260 . . . . . . . 8 (𝜑 → 0 ≤ inf(𝑅, ℝ, < ))
8180, 2breqtrrdi 5094 . . . . . . 7 (𝜑 → 0 ≤ 𝑆)
82 eqid 2824 . . . . . . . . . . . 12 (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))) = (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))
83 oveq2 7153 . . . . . . . . . . . . . 14 (𝑦 = ((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)) → (𝐴𝑀𝑦) = (𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))
8483fveq2d 6662 . . . . . . . . . . . . 13 (𝑦 = ((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)) → (𝑁‘(𝐴𝑀𝑦)) = (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))))
8584rspceeqv 3624 . . . . . . . . . . . 12 ((((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)) ∈ 𝑌 ∧ (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))) = (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))) → ∃𝑦𝑌 (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))) = (𝑁‘(𝐴𝑀𝑦)))
8663, 82, 85sylancl 589 . . . . . . . . . . 11 (𝜑 → ∃𝑦𝑌 (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))) = (𝑁‘(𝐴𝑀𝑦)))
87 eqid 2824 . . . . . . . . . . . 12 (𝑦𝑌 ↦ (𝑁‘(𝐴𝑀𝑦))) = (𝑦𝑌 ↦ (𝑁‘(𝐴𝑀𝑦)))
88 fvex 6671 . . . . . . . . . . . 12 (𝑁‘(𝐴𝑀𝑦)) ∈ V
8987, 88elrnmpti 5819 . . . . . . . . . . 11 ((𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))) ∈ ran (𝑦𝑌 ↦ (𝑁‘(𝐴𝑀𝑦))) ↔ ∃𝑦𝑌 (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))) = (𝑁‘(𝐴𝑀𝑦)))
9086, 89sylibr 237 . . . . . . . . . 10 (𝜑 → (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))) ∈ ran (𝑦𝑌 ↦ (𝑁‘(𝐴𝑀𝑦))))
9190, 12eleqtrrdi 2927 . . . . . . . . 9 (𝜑 → (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))) ∈ 𝑅)
92 infrelb 11618 . . . . . . . . 9 ((𝑅 ⊆ ℝ ∧ ∃𝑥 ∈ ℝ ∀𝑤𝑅 𝑥𝑤 ∧ (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))) ∈ 𝑅) → inf(𝑅, ℝ, < ) ≤ (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))))
9314, 21, 91, 92syl3anc 1368 . . . . . . . 8 (𝜑 → inf(𝑅, ℝ, < ) ≤ (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))))
942, 93eqbrtrid 5087 . . . . . . 7 (𝜑𝑆 ≤ (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))))
95 le2sq2 13501 . . . . . . 7 (((𝑆 ∈ ℝ ∧ 0 ≤ 𝑆) ∧ ((𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))) ∈ ℝ ∧ 𝑆 ≤ (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))))) → (𝑆↑2) ≤ ((𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))↑2))
9624, 81, 68, 94, 95syl22anc 837 . . . . . 6 (𝜑 → (𝑆↑2) ≤ ((𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))↑2))
97 4pos 11737 . . . . . . . . 9 0 < 4
981, 97pm3.2i 474 . . . . . . . 8 (4 ∈ ℝ ∧ 0 < 4)
99 lemul2 11485 . . . . . . . 8 (((𝑆↑2) ∈ ℝ ∧ ((𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))↑2) ∈ ℝ ∧ (4 ∈ ℝ ∧ 0 < 4)) → ((𝑆↑2) ≤ ((𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))↑2) ↔ (4 · (𝑆↑2)) ≤ (4 · ((𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))↑2))))
10098, 99mp3an3 1447 . . . . . . 7 (((𝑆↑2) ∈ ℝ ∧ ((𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))↑2) ∈ ℝ) → ((𝑆↑2) ≤ ((𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))↑2) ↔ (4 · (𝑆↑2)) ≤ (4 · ((𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))↑2))))
10125, 69, 100syl2anc 587 . . . . . 6 (𝜑 → ((𝑆↑2) ≤ ((𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))↑2) ↔ (4 · (𝑆↑2)) ≤ (4 · ((𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))↑2))))
10296, 101mpbid 235 . . . . 5 (𝜑 → (4 · (𝑆↑2)) ≤ (4 · ((𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))↑2)))
10327, 71, 43, 102leadd1dd 11246 . . . 4 (𝜑 → ((4 · (𝑆↑2)) + ((𝐾𝐷𝐿)↑2)) ≤ ((4 · ((𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))↑2)) + ((𝐾𝐷𝐿)↑2)))
104 metcl 22935 . . . . . . . . . 10 ((𝐷 ∈ (Met‘𝑋) ∧ 𝐴𝑋𝐾𝑋) → (𝐴𝐷𝐾) ∈ ℝ)
10531, 9, 38, 104syl3anc 1368 . . . . . . . . 9 (𝜑 → (𝐴𝐷𝐾) ∈ ℝ)
106105resqcld 13612 . . . . . . . 8 (𝜑 → ((𝐴𝐷𝐾)↑2) ∈ ℝ)
107 metcl 22935 . . . . . . . . . 10 ((𝐷 ∈ (Met‘𝑋) ∧ 𝐴𝑋𝐿𝑋) → (𝐴𝐷𝐿) ∈ ℝ)
10831, 9, 40, 107syl3anc 1368 . . . . . . . . 9 (𝜑 → (𝐴𝐷𝐿) ∈ ℝ)
109108resqcld 13612 . . . . . . . 8 (𝜑 → ((𝐴𝐷𝐿)↑2) ∈ ℝ)
110 minvecolem2.5 . . . . . . . 8 (𝜑 → ((𝐴𝐷𝐾)↑2) ≤ ((𝑆↑2) + 𝐵))
111 minvecolem2.6 . . . . . . . 8 (𝜑 → ((𝐴𝐷𝐿)↑2) ≤ ((𝑆↑2) + 𝐵))
112106, 109, 74, 74, 110, 111le2addd 11251 . . . . . . 7 (𝜑 → (((𝐴𝐷𝐾)↑2) + ((𝐴𝐷𝐿)↑2)) ≤ (((𝑆↑2) + 𝐵) + ((𝑆↑2) + 𝐵)))
11374recnd 10661 . . . . . . . 8 (𝜑 → ((𝑆↑2) + 𝐵) ∈ ℂ)
1141132timesd 11873 . . . . . . 7 (𝜑 → (2 · ((𝑆↑2) + 𝐵)) = (((𝑆↑2) + 𝐵) + ((𝑆↑2) + 𝐵)))
115112, 114breqtrrd 5080 . . . . . 6 (𝜑 → (((𝐴𝐷𝐾)↑2) + ((𝐴𝐷𝐿)↑2)) ≤ (2 · ((𝑆↑2) + 𝐵)))
116106, 109readdcld 10662 . . . . . . 7 (𝜑 → (((𝐴𝐷𝐾)↑2) + ((𝐴𝐷𝐿)↑2)) ∈ ℝ)
117 2re 11704 . . . . . . . 8 2 ∈ ℝ
118 remulcl 10614 . . . . . . . 8 ((2 ∈ ℝ ∧ ((𝑆↑2) + 𝐵) ∈ ℝ) → (2 · ((𝑆↑2) + 𝐵)) ∈ ℝ)
119117, 74, 118sylancr 590 . . . . . . 7 (𝜑 → (2 · ((𝑆↑2) + 𝐵)) ∈ ℝ)
120 2pos 11733 . . . . . . . . 9 0 < 2
121117, 120pm3.2i 474 . . . . . . . 8 (2 ∈ ℝ ∧ 0 < 2)
122 lemul2 11485 . . . . . . . 8 (((((𝐴𝐷𝐾)↑2) + ((𝐴𝐷𝐿)↑2)) ∈ ℝ ∧ (2 · ((𝑆↑2) + 𝐵)) ∈ ℝ ∧ (2 ∈ ℝ ∧ 0 < 2)) → ((((𝐴𝐷𝐾)↑2) + ((𝐴𝐷𝐿)↑2)) ≤ (2 · ((𝑆↑2) + 𝐵)) ↔ (2 · (((𝐴𝐷𝐾)↑2) + ((𝐴𝐷𝐿)↑2))) ≤ (2 · (2 · ((𝑆↑2) + 𝐵)))))
123121, 122mp3an3 1447 . . . . . . 7 (((((𝐴𝐷𝐾)↑2) + ((𝐴𝐷𝐿)↑2)) ∈ ℝ ∧ (2 · ((𝑆↑2) + 𝐵)) ∈ ℝ) → ((((𝐴𝐷𝐾)↑2) + ((𝐴𝐷𝐿)↑2)) ≤ (2 · ((𝑆↑2) + 𝐵)) ↔ (2 · (((𝐴𝐷𝐾)↑2) + ((𝐴𝐷𝐿)↑2))) ≤ (2 · (2 · ((𝑆↑2) + 𝐵)))))
124116, 119, 123syl2anc 587 . . . . . 6 (𝜑 → ((((𝐴𝐷𝐾)↑2) + ((𝐴𝐷𝐿)↑2)) ≤ (2 · ((𝑆↑2) + 𝐵)) ↔ (2 · (((𝐴𝐷𝐾)↑2) + ((𝐴𝐷𝐿)↑2))) ≤ (2 · (2 · ((𝑆↑2) + 𝐵)))))
125115, 124mpbid 235 . . . . 5 (𝜑 → (2 · (((𝐴𝐷𝐾)↑2) + ((𝐴𝐷𝐿)↑2))) ≤ (2 · (2 · ((𝑆↑2) + 𝐵))))
1263, 4nvmcl 28425 . . . . . . . 8 ((𝑈 ∈ NrmCVec ∧ 𝐴𝑋𝐾𝑋) → (𝐴𝑀𝐾) ∈ 𝑋)
12729, 9, 38, 126syl3anc 1368 . . . . . . 7 (𝜑 → (𝐴𝑀𝐾) ∈ 𝑋)
1283, 4nvmcl 28425 . . . . . . . 8 ((𝑈 ∈ NrmCVec ∧ 𝐴𝑋𝐿𝑋) → (𝐴𝑀𝐿) ∈ 𝑋)
12929, 9, 40, 128syl3anc 1368 . . . . . . 7 (𝜑 → (𝐴𝑀𝐿) ∈ 𝑋)
1303, 48, 4, 5phpar2 28602 . . . . . . 7 ((𝑈 ∈ CPreHilOLD ∧ (𝐴𝑀𝐾) ∈ 𝑋 ∧ (𝐴𝑀𝐿) ∈ 𝑋) → (((𝑁‘((𝐴𝑀𝐾)( +𝑣𝑈)(𝐴𝑀𝐿)))↑2) + ((𝑁‘((𝐴𝑀𝐾)𝑀(𝐴𝑀𝐿)))↑2)) = (2 · (((𝑁‘(𝐴𝑀𝐾))↑2) + ((𝑁‘(𝐴𝑀𝐿))↑2))))
1317, 127, 129, 130syl3anc 1368 . . . . . 6 (𝜑 → (((𝑁‘((𝐴𝑀𝐾)( +𝑣𝑈)(𝐴𝑀𝐿)))↑2) + ((𝑁‘((𝐴𝑀𝐾)𝑀(𝐴𝑀𝐿)))↑2)) = (2 · (((𝑁‘(𝐴𝑀𝐾))↑2) + ((𝑁‘(𝐴𝑀𝐿))↑2))))
132 2cn 11705 . . . . . . . . . 10 2 ∈ ℂ
13368recnd 10661 . . . . . . . . . 10 (𝜑 → (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))) ∈ ℂ)
134 sqmul 13486 . . . . . . . . . 10 ((2 ∈ ℂ ∧ (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))) ∈ ℂ) → ((2 · (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))))↑2) = ((2↑2) · ((𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))↑2)))
135132, 133, 134sylancr 590 . . . . . . . . 9 (𝜑 → ((2 · (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))))↑2) = ((2↑2) · ((𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))↑2)))
136 sq2 13561 . . . . . . . . . 10 (2↑2) = 4
137136oveq1i 7155 . . . . . . . . 9 ((2↑2) · ((𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))↑2)) = (4 · ((𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))↑2))
138135, 137syl6eq 2875 . . . . . . . 8 (𝜑 → ((2 · (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))))↑2) = (4 · ((𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))↑2)))
139132a1i 11 . . . . . . . . . . . 12 (𝜑 → 2 ∈ ℂ)
1403, 57, 5nvs 28442 . . . . . . . . . . . 12 ((𝑈 ∈ NrmCVec ∧ 2 ∈ ℂ ∧ (𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))) ∈ 𝑋) → (𝑁‘(2( ·𝑠OLD𝑈)(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))) = ((abs‘2) · (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))))
14129, 139, 66, 140syl3anc 1368 . . . . . . . . . . 11 (𝜑 → (𝑁‘(2( ·𝑠OLD𝑈)(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))) = ((abs‘2) · (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))))
142 0le2 11732 . . . . . . . . . . . . 13 0 ≤ 2
143 absid 14652 . . . . . . . . . . . . 13 ((2 ∈ ℝ ∧ 0 ≤ 2) → (abs‘2) = 2)
144117, 142, 143mp2an 691 . . . . . . . . . . . 12 (abs‘2) = 2
145144oveq1i 7155 . . . . . . . . . . 11 ((abs‘2) · (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))) = (2 · (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))))
146141, 145syl6eq 2875 . . . . . . . . . 10 (𝜑 → (𝑁‘(2( ·𝑠OLD𝑈)(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))) = (2 · (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))))
1473, 4, 57nvmdi 28427 . . . . . . . . . . . . 13 ((𝑈 ∈ NrmCVec ∧ (2 ∈ ℂ ∧ 𝐴𝑋 ∧ ((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)) ∈ 𝑋)) → (2( ·𝑠OLD𝑈)(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))) = ((2( ·𝑠OLD𝑈)𝐴)𝑀(2( ·𝑠OLD𝑈)((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))))
14829, 139, 9, 64, 147syl13anc 1369 . . . . . . . . . . . 12 (𝜑 → (2( ·𝑠OLD𝑈)(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))) = ((2( ·𝑠OLD𝑈)𝐴)𝑀(2( ·𝑠OLD𝑈)((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))))
1493, 48, 57nv2 28411 . . . . . . . . . . . . . 14 ((𝑈 ∈ NrmCVec ∧ 𝐴𝑋) → (𝐴( +𝑣𝑈)𝐴) = (2( ·𝑠OLD𝑈)𝐴))
15029, 9, 149syl2anc 587 . . . . . . . . . . . . 13 (𝜑 → (𝐴( +𝑣𝑈)𝐴) = (2( ·𝑠OLD𝑈)𝐴))
151 2ne0 11734 . . . . . . . . . . . . . . . . 17 2 ≠ 0
152132, 151recidi 11363 . . . . . . . . . . . . . . . 16 (2 · (1 / 2)) = 1
153152oveq1i 7155 . . . . . . . . . . . . . . 15 ((2 · (1 / 2))( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)) = (1( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))
1543, 48nvgcl 28399 . . . . . . . . . . . . . . . . 17 ((𝑈 ∈ NrmCVec ∧ 𝐾𝑋𝐿𝑋) → (𝐾( +𝑣𝑈)𝐿) ∈ 𝑋)
15529, 38, 40, 154syl3anc 1368 . . . . . . . . . . . . . . . 16 (𝜑 → (𝐾( +𝑣𝑈)𝐿) ∈ 𝑋)
1563, 57nvsid 28406 . . . . . . . . . . . . . . . 16 ((𝑈 ∈ NrmCVec ∧ (𝐾( +𝑣𝑈)𝐿) ∈ 𝑋) → (1( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)) = (𝐾( +𝑣𝑈)𝐿))
15729, 155, 156syl2anc 587 . . . . . . . . . . . . . . 15 (𝜑 → (1( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)) = (𝐾( +𝑣𝑈)𝐿))
158153, 157syl5eq 2871 . . . . . . . . . . . . . 14 (𝜑 → ((2 · (1 / 2))( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)) = (𝐾( +𝑣𝑈)𝐿))
1593, 57nvsass 28407 . . . . . . . . . . . . . . 15 ((𝑈 ∈ NrmCVec ∧ (2 ∈ ℂ ∧ (1 / 2) ∈ ℂ ∧ (𝐾( +𝑣𝑈)𝐿) ∈ 𝑋)) → ((2 · (1 / 2))( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)) = (2( ·𝑠OLD𝑈)((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))
16029, 139, 47, 155, 159syl13anc 1369 . . . . . . . . . . . . . 14 (𝜑 → ((2 · (1 / 2))( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)) = (2( ·𝑠OLD𝑈)((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))
161158, 160eqtr3d 2861 . . . . . . . . . . . . 13 (𝜑 → (𝐾( +𝑣𝑈)𝐿) = (2( ·𝑠OLD𝑈)((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))
162150, 161oveq12d 7163 . . . . . . . . . . . 12 (𝜑 → ((𝐴( +𝑣𝑈)𝐴)𝑀(𝐾( +𝑣𝑈)𝐿)) = ((2( ·𝑠OLD𝑈)𝐴)𝑀(2( ·𝑠OLD𝑈)((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))))
1633, 48, 4nvaddsub4 28436 . . . . . . . . . . . . 13 ((𝑈 ∈ NrmCVec ∧ (𝐴𝑋𝐴𝑋) ∧ (𝐾𝑋𝐿𝑋)) → ((𝐴( +𝑣𝑈)𝐴)𝑀(𝐾( +𝑣𝑈)𝐿)) = ((𝐴𝑀𝐾)( +𝑣𝑈)(𝐴𝑀𝐿)))
16429, 9, 9, 38, 40, 163syl122anc 1376 . . . . . . . . . . . 12 (𝜑 → ((𝐴( +𝑣𝑈)𝐴)𝑀(𝐾( +𝑣𝑈)𝐿)) = ((𝐴𝑀𝐾)( +𝑣𝑈)(𝐴𝑀𝐿)))
165148, 162, 1643eqtr2d 2865 . . . . . . . . . . 11 (𝜑 → (2( ·𝑠OLD𝑈)(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))) = ((𝐴𝑀𝐾)( +𝑣𝑈)(𝐴𝑀𝐿)))
166165fveq2d 6662 . . . . . . . . . 10 (𝜑 → (𝑁‘(2( ·𝑠OLD𝑈)(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))) = (𝑁‘((𝐴𝑀𝐾)( +𝑣𝑈)(𝐴𝑀𝐿))))
167146, 166eqtr3d 2861 . . . . . . . . 9 (𝜑 → (2 · (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))) = (𝑁‘((𝐴𝑀𝐾)( +𝑣𝑈)(𝐴𝑀𝐿))))
168167oveq1d 7160 . . . . . . . 8 (𝜑 → ((2 · (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))))↑2) = ((𝑁‘((𝐴𝑀𝐾)( +𝑣𝑈)(𝐴𝑀𝐿)))↑2))
169138, 168eqtr3d 2861 . . . . . . 7 (𝜑 → (4 · ((𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))↑2)) = ((𝑁‘((𝐴𝑀𝐾)( +𝑣𝑈)(𝐴𝑀𝐿)))↑2))
1703, 4, 5, 10imsdval 28465 . . . . . . . . . 10 ((𝑈 ∈ NrmCVec ∧ 𝐿𝑋𝐾𝑋) → (𝐿𝐷𝐾) = (𝑁‘(𝐿𝑀𝐾)))
17129, 40, 38, 170syl3anc 1368 . . . . . . . . 9 (𝜑 → (𝐿𝐷𝐾) = (𝑁‘(𝐿𝑀𝐾)))
172 metsym 22953 . . . . . . . . . 10 ((𝐷 ∈ (Met‘𝑋) ∧ 𝐾𝑋𝐿𝑋) → (𝐾𝐷𝐿) = (𝐿𝐷𝐾))
17331, 38, 40, 172syl3anc 1368 . . . . . . . . 9 (𝜑 → (𝐾𝐷𝐿) = (𝐿𝐷𝐾))
1743, 4nvnnncan1 28426 . . . . . . . . . . 11 ((𝑈 ∈ NrmCVec ∧ (𝐴𝑋𝐾𝑋𝐿𝑋)) → ((𝐴𝑀𝐾)𝑀(𝐴𝑀𝐿)) = (𝐿𝑀𝐾))
17529, 9, 38, 40, 174syl13anc 1369 . . . . . . . . . 10 (𝜑 → ((𝐴𝑀𝐾)𝑀(𝐴𝑀𝐿)) = (𝐿𝑀𝐾))
176175fveq2d 6662 . . . . . . . . 9 (𝜑 → (𝑁‘((𝐴𝑀𝐾)𝑀(𝐴𝑀𝐿))) = (𝑁‘(𝐿𝑀𝐾)))
177171, 173, 1763eqtr4d 2869 . . . . . . . 8 (𝜑 → (𝐾𝐷𝐿) = (𝑁‘((𝐴𝑀𝐾)𝑀(𝐴𝑀𝐿))))
178177oveq1d 7160 . . . . . . 7 (𝜑 → ((𝐾𝐷𝐿)↑2) = ((𝑁‘((𝐴𝑀𝐾)𝑀(𝐴𝑀𝐿)))↑2))
179169, 178oveq12d 7163 . . . . . 6 (𝜑 → ((4 · ((𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))↑2)) + ((𝐾𝐷𝐿)↑2)) = (((𝑁‘((𝐴𝑀𝐾)( +𝑣𝑈)(𝐴𝑀𝐿)))↑2) + ((𝑁‘((𝐴𝑀𝐾)𝑀(𝐴𝑀𝐿)))↑2)))
1803, 4, 5, 10imsdval 28465 . . . . . . . . . 10 ((𝑈 ∈ NrmCVec ∧ 𝐴𝑋𝐾𝑋) → (𝐴𝐷𝐾) = (𝑁‘(𝐴𝑀𝐾)))
18129, 9, 38, 180syl3anc 1368 . . . . . . . . 9 (𝜑 → (𝐴𝐷𝐾) = (𝑁‘(𝐴𝑀𝐾)))
182181oveq1d 7160 . . . . . . . 8 (𝜑 → ((𝐴𝐷𝐾)↑2) = ((𝑁‘(𝐴𝑀𝐾))↑2))
1833, 4, 5, 10imsdval 28465 . . . . . . . . . 10 ((𝑈 ∈ NrmCVec ∧ 𝐴𝑋𝐿𝑋) → (𝐴𝐷𝐿) = (𝑁‘(𝐴𝑀𝐿)))
18429, 9, 40, 183syl3anc 1368 . . . . . . . . 9 (𝜑 → (𝐴𝐷𝐿) = (𝑁‘(𝐴𝑀𝐿)))
185184oveq1d 7160 . . . . . . . 8 (𝜑 → ((𝐴𝐷𝐿)↑2) = ((𝑁‘(𝐴𝑀𝐿))↑2))
186182, 185oveq12d 7163 . . . . . . 7 (𝜑 → (((𝐴𝐷𝐾)↑2) + ((𝐴𝐷𝐿)↑2)) = (((𝑁‘(𝐴𝑀𝐾))↑2) + ((𝑁‘(𝐴𝑀𝐿))↑2)))
187186oveq2d 7161 . . . . . 6 (𝜑 → (2 · (((𝐴𝐷𝐾)↑2) + ((𝐴𝐷𝐿)↑2))) = (2 · (((𝑁‘(𝐴𝑀𝐾))↑2) + ((𝑁‘(𝐴𝑀𝐿))↑2))))
188131, 179, 1873eqtr4d 2869 . . . . 5 (𝜑 → ((4 · ((𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))↑2)) + ((𝐾𝐷𝐿)↑2)) = (2 · (((𝐴𝐷𝐾)↑2) + ((𝐴𝐷𝐿)↑2))))
189 2t2e4 11794 . . . . . . 7 (2 · 2) = 4
190189oveq1i 7155 . . . . . 6 ((2 · 2) · ((𝑆↑2) + 𝐵)) = (4 · ((𝑆↑2) + 𝐵))
191139, 139, 113mulassd 10656 . . . . . 6 (𝜑 → ((2 · 2) · ((𝑆↑2) + 𝐵)) = (2 · (2 · ((𝑆↑2) + 𝐵))))
192190, 191syl5eqr 2873 . . . . 5 (𝜑 → (4 · ((𝑆↑2) + 𝐵)) = (2 · (2 · ((𝑆↑2) + 𝐵))))
193125, 188, 1923brtr4d 5084 . . . 4 (𝜑 → ((4 · ((𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))↑2)) + ((𝐾𝐷𝐿)↑2)) ≤ (4 · ((𝑆↑2) + 𝐵)))
19444, 72, 76, 103, 193letrd 10789 . . 3 (𝜑 → ((4 · (𝑆↑2)) + ((𝐾𝐷𝐿)↑2)) ≤ (4 · ((𝑆↑2) + 𝐵)))
195 4cn 11715 . . . . 5 4 ∈ ℂ
196195a1i 11 . . . 4 (𝜑 → 4 ∈ ℂ)
19725recnd 10661 . . . 4 (𝜑 → (𝑆↑2) ∈ ℂ)
19873recnd 10661 . . . 4 (𝜑𝐵 ∈ ℂ)
199196, 197, 198adddid 10657 . . 3 (𝜑 → (4 · ((𝑆↑2) + 𝐵)) = ((4 · (𝑆↑2)) + (4 · 𝐵)))
200194, 199breqtrd 5078 . 2 (𝜑 → ((4 · (𝑆↑2)) + ((𝐾𝐷𝐿)↑2)) ≤ ((4 · (𝑆↑2)) + (4 · 𝐵)))
201 remulcl 10614 . . . 4 ((4 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (4 · 𝐵) ∈ ℝ)
2021, 73, 201sylancr 590 . . 3 (𝜑 → (4 · 𝐵) ∈ ℝ)
20343, 202, 27leadd2d 11227 . 2 (𝜑 → (((𝐾𝐷𝐿)↑2) ≤ (4 · 𝐵) ↔ ((4 · (𝑆↑2)) + ((𝐾𝐷𝐿)↑2)) ≤ ((4 · (𝑆↑2)) + (4 · 𝐵))))
204200, 203mpbird 260 1 (𝜑 → ((𝐾𝐷𝐿)↑2) ≤ (4 · 𝐵))
 Colors of variables: wff setvar class Syntax hints:   → wi 4   ↔ wb 209   ∧ wa 399   = wceq 1538   ∈ wcel 2115   ≠ wne 3014  ∀wral 3133  ∃wrex 3134   ∩ cin 3918   ⊆ wss 3919  ∅c0 4275   class class class wbr 5052   ↦ cmpt 5132  ran crn 5543  ‘cfv 6343  (class class class)co 7145  infcinf 8896  ℂcc 10527  ℝcr 10528  0cc0 10529  1c1 10530   + caddc 10532   · cmul 10534   < clt 10667   ≤ cle 10668   / cdiv 11289  2c2 11685  4c4 11687  ↑cexp 13430  abscabs 14589  Metcmet 20524  MetOpencmopn 20528  NrmCVeccnv 28363   +𝑣 cpv 28364  BaseSetcba 28365   ·𝑠OLD cns 28366   −𝑣 cnsb 28368  normCVcnmcv 28369  IndMetcims 28370  SubSpcss 28500  CPreHilOLDccphlo 28591  CBanccbn 28641 This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1912  ax-6 1971  ax-7 2016  ax-8 2117  ax-9 2125  ax-10 2146  ax-11 2162  ax-12 2179  ax-ext 2796  ax-rep 5176  ax-sep 5189  ax-nul 5196  ax-pow 5253  ax-pr 5317  ax-un 7451  ax-cnex 10585  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  ax-pre-mulgt0 10606  ax-pre-sup 10607  ax-addf 10608  ax-mulf 10609 This theorem depends on definitions:  df-bi 210  df-an 400  df-or 845  df-3or 1085  df-3an 1086  df-tru 1541  df-ex 1782  df-nf 1786  df-sb 2071  df-mo 2624  df-eu 2655  df-clab 2803  df-cleq 2817  df-clel 2896  df-nfc 2964  df-ne 3015  df-nel 3119  df-ral 3138  df-rex 3139  df-reu 3140  df-rmo 3141  df-rab 3142  df-v 3482  df-sbc 3759  df-csb 3867  df-dif 3922  df-un 3924  df-in 3926  df-ss 3936  df-pss 3938  df-nul 4276  df-if 4450  df-pw 4523  df-sn 4550  df-pr 4552  df-tp 4554  df-op 4556  df-uni 4825  df-iun 4907  df-br 5053  df-opab 5115  df-mpt 5133  df-tr 5159  df-id 5447  df-eprel 5452  df-po 5461  df-so 5462  df-fr 5501  df-we 5503  df-xp 5548  df-rel 5549  df-cnv 5550  df-co 5551  df-dm 5552  df-rn 5553  df-res 5554  df-ima 5555  df-pred 6135  df-ord 6181  df-on 6182  df-lim 6183  df-suc 6184  df-iota 6302  df-fun 6345  df-fn 6346  df-f 6347  df-f1 6348  df-fo 6349  df-f1o 6350  df-fv 6351  df-riota 7103  df-ov 7148  df-oprab 7149  df-mpo 7150  df-om 7571  df-1st 7679  df-2nd 7680  df-wrecs 7937  df-recs 7998  df-rdg 8036  df-er 8279  df-map 8398  df-en 8500  df-dom 8501  df-sdom 8502  df-sup 8897  df-inf 8898  df-pnf 10669  df-mnf 10670  df-xr 10671  df-ltxr 10672  df-le 10673  df-sub 10864  df-neg 10865  df-div 11290  df-nn 11631  df-2 11693  df-3 11694  df-4 11695  df-n0 11891  df-z 11975  df-uz 12237  df-rp 12383  df-xadd 12501  df-seq 13370  df-exp 13431  df-cj 14454  df-re 14455  df-im 14456  df-sqrt 14590  df-abs 14591  df-xmet 20531  df-met 20532  df-grpo 28272  df-gid 28273  df-ginv 28274  df-gdiv 28275  df-ablo 28324  df-vc 28338  df-nv 28371  df-va 28374  df-ba 28375  df-sm 28376  df-0v 28377  df-vs 28378  df-nmcv 28379  df-ims 28380  df-ssp 28501  df-ph 28592  df-cbn 28642 This theorem is referenced by:  minvecolem3  28655  minvecolem7  28662
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