MPE Home Metamath Proof Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >  minvecolem2 Structured version   Visualization version   GIF version

Theorem minvecolem2 27598
Description: Lemma for minveco 27607. 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 11048 . . . . . 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 27597 . . . . . . . . . 10 (𝜑 → (𝑅 ⊆ ℝ ∧ 𝑅 ≠ ∅ ∧ ∀𝑤𝑅 0 ≤ 𝑤))
1413simp1d 1071 . . . . . . . . 9 (𝜑𝑅 ⊆ ℝ)
1513simp2d 1072 . . . . . . . . 9 (𝜑𝑅 ≠ ∅)
16 0re 9991 . . . . . . . . . 10 0 ∈ ℝ
1713simp3d 1073 . . . . . . . . . 10 (𝜑 → ∀𝑤𝑅 0 ≤ 𝑤)
18 breq1 4621 . . . . . . . . . . . 12 (𝑥 = 0 → (𝑥𝑤 ↔ 0 ≤ 𝑤))
1918ralbidv 2981 . . . . . . . . . . 11 (𝑥 = 0 → (∀𝑤𝑅 𝑥𝑤 ↔ ∀𝑤𝑅 0 ≤ 𝑤))
2019rspcev 3298 . . . . . . . . . 10 ((0 ∈ ℝ ∧ ∀𝑤𝑅 0 ≤ 𝑤) → ∃𝑥 ∈ ℝ ∀𝑤𝑅 𝑥𝑤)
2116, 17, 20sylancr 694 . . . . . . . . 9 (𝜑 → ∃𝑥 ∈ ℝ ∀𝑤𝑅 𝑥𝑤)
22 infrecl 10956 . . . . . . . . 9 ((𝑅 ⊆ ℝ ∧ 𝑅 ≠ ∅ ∧ ∃𝑥 ∈ ℝ ∀𝑤𝑅 𝑥𝑤) → inf(𝑅, ℝ, < ) ∈ ℝ)
2314, 15, 21, 22syl3anc 1323 . . . . . . . 8 (𝜑 → inf(𝑅, ℝ, < ) ∈ ℝ)
242, 23syl5eqel 2702 . . . . . . 7 (𝜑𝑆 ∈ ℝ)
2524resqcld 12982 . . . . . 6 (𝜑 → (𝑆↑2) ∈ ℝ)
26 remulcl 9972 . . . . . 6 ((4 ∈ ℝ ∧ (𝑆↑2) ∈ ℝ) → (4 · (𝑆↑2)) ∈ ℝ)
271, 25, 26sylancr 694 . . . . 5 (𝜑 → (4 · (𝑆↑2)) ∈ ℝ)
28 phnv 27536 . . . . . . . . 9 (𝑈 ∈ CPreHilOLD𝑈 ∈ NrmCVec)
297, 28syl 17 . . . . . . . 8 (𝜑𝑈 ∈ NrmCVec)
303, 10imsmet 27413 . . . . . . . 8 (𝑈 ∈ NrmCVec → 𝐷 ∈ (Met‘𝑋))
3129, 30syl 17 . . . . . . 7 (𝜑𝐷 ∈ (Met‘𝑋))
32 inss1 3816 . . . . . . . . . 10 ((SubSp‘𝑈) ∩ CBan) ⊆ (SubSp‘𝑈)
3332, 8sseldi 3585 . . . . . . . . 9 (𝜑𝑊 ∈ (SubSp‘𝑈))
34 eqid 2621 . . . . . . . . . 10 (SubSp‘𝑈) = (SubSp‘𝑈)
353, 6, 34sspba 27449 . . . . . . . . 9 ((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ (SubSp‘𝑈)) → 𝑌𝑋)
3629, 33, 35syl2anc 692 . . . . . . . 8 (𝜑𝑌𝑋)
37 minvecolem2.3 . . . . . . . 8 (𝜑𝐾𝑌)
3836, 37sseldd 3588 . . . . . . 7 (𝜑𝐾𝑋)
39 minvecolem2.4 . . . . . . . 8 (𝜑𝐿𝑌)
4036, 39sseldd 3588 . . . . . . 7 (𝜑𝐿𝑋)
41 metcl 22056 . . . . . . 7 ((𝐷 ∈ (Met‘𝑋) ∧ 𝐾𝑋𝐿𝑋) → (𝐾𝐷𝐿) ∈ ℝ)
4231, 38, 40, 41syl3anc 1323 . . . . . 6 (𝜑 → (𝐾𝐷𝐿) ∈ ℝ)
4342resqcld 12982 . . . . 5 (𝜑 → ((𝐾𝐷𝐿)↑2) ∈ ℝ)
4427, 43readdcld 10020 . . . 4 (𝜑 → ((4 · (𝑆↑2)) + ((𝐾𝐷𝐿)↑2)) ∈ ℝ)
45 ax-1cn 9945 . . . . . . . . . . . . 13 1 ∈ ℂ
46 halfcl 11208 . . . . . . . . . . . . 13 (1 ∈ ℂ → (1 / 2) ∈ ℂ)
4745, 46mp1i 13 . . . . . . . . . . . 12 (𝜑 → (1 / 2) ∈ ℂ)
48 eqid 2621 . . . . . . . . . . . . . . 15 ( +𝑣𝑈) = ( +𝑣𝑈)
49 eqid 2621 . . . . . . . . . . . . . . 15 ( +𝑣𝑊) = ( +𝑣𝑊)
506, 48, 49, 34sspgval 27451 . . . . . . . . . . . . . 14 (((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ (SubSp‘𝑈)) ∧ (𝐾𝑌𝐿𝑌)) → (𝐾( +𝑣𝑊)𝐿) = (𝐾( +𝑣𝑈)𝐿))
5129, 33, 37, 39, 50syl22anc 1324 . . . . . . . . . . . . 13 (𝜑 → (𝐾( +𝑣𝑊)𝐿) = (𝐾( +𝑣𝑈)𝐿))
5234sspnv 27448 . . . . . . . . . . . . . . 15 ((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ (SubSp‘𝑈)) → 𝑊 ∈ NrmCVec)
5329, 33, 52syl2anc 692 . . . . . . . . . . . . . 14 (𝜑𝑊 ∈ NrmCVec)
546, 49nvgcl 27342 . . . . . . . . . . . . . 14 ((𝑊 ∈ NrmCVec ∧ 𝐾𝑌𝐿𝑌) → (𝐾( +𝑣𝑊)𝐿) ∈ 𝑌)
5553, 37, 39, 54syl3anc 1323 . . . . . . . . . . . . 13 (𝜑 → (𝐾( +𝑣𝑊)𝐿) ∈ 𝑌)
5651, 55eqeltrrd 2699 . . . . . . . . . . . 12 (𝜑 → (𝐾( +𝑣𝑈)𝐿) ∈ 𝑌)
57 eqid 2621 . . . . . . . . . . . . 13 ( ·𝑠OLD𝑈) = ( ·𝑠OLD𝑈)
58 eqid 2621 . . . . . . . . . . . . 13 ( ·𝑠OLD𝑊) = ( ·𝑠OLD𝑊)
596, 57, 58, 34sspsval 27453 . . . . . . . . . . . 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 1324 . . . . . . . . . . 11 (𝜑 → ((1 / 2)( ·𝑠OLD𝑊)(𝐾( +𝑣𝑈)𝐿)) = ((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))
616, 58nvscl 27348 . . . . . . . . . . . 12 ((𝑊 ∈ NrmCVec ∧ (1 / 2) ∈ ℂ ∧ (𝐾( +𝑣𝑈)𝐿) ∈ 𝑌) → ((1 / 2)( ·𝑠OLD𝑊)(𝐾( +𝑣𝑈)𝐿)) ∈ 𝑌)
6253, 47, 56, 61syl3anc 1323 . . . . . . . . . . 11 (𝜑 → ((1 / 2)( ·𝑠OLD𝑊)(𝐾( +𝑣𝑈)𝐿)) ∈ 𝑌)
6360, 62eqeltrrd 2699 . . . . . . . . . 10 (𝜑 → ((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)) ∈ 𝑌)
6436, 63sseldd 3588 . . . . . . . . 9 (𝜑 → ((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)) ∈ 𝑋)
653, 4nvmcl 27368 . . . . . . . . 9 ((𝑈 ∈ NrmCVec ∧ 𝐴𝑋 ∧ ((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)) ∈ 𝑋) → (𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))) ∈ 𝑋)
6629, 9, 64, 65syl3anc 1323 . . . . . . . 8 (𝜑 → (𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))) ∈ 𝑋)
673, 5nvcl 27383 . . . . . . . 8 ((𝑈 ∈ NrmCVec ∧ (𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))) ∈ 𝑋) → (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))) ∈ ℝ)
6829, 66, 67syl2anc 692 . . . . . . 7 (𝜑 → (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))) ∈ ℝ)
6968resqcld 12982 . . . . . 6 (𝜑 → ((𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))↑2) ∈ ℝ)
70 remulcl 9972 . . . . . 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 694 . . . . 5 (𝜑 → (4 · ((𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))↑2)) ∈ ℝ)
7271, 43readdcld 10020 . . . 4 (𝜑 → ((4 · ((𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))↑2)) + ((𝐾𝐷𝐿)↑2)) ∈ ℝ)
73 minvecolem2.1 . . . . . 6 (𝜑𝐵 ∈ ℝ)
7425, 73readdcld 10020 . . . . 5 (𝜑 → ((𝑆↑2) + 𝐵) ∈ ℝ)
75 remulcl 9972 . . . . 5 ((4 ∈ ℝ ∧ ((𝑆↑2) + 𝐵) ∈ ℝ) → (4 · ((𝑆↑2) + 𝐵)) ∈ ℝ)
761, 74, 75sylancr 694 . . . 4 (𝜑 → (4 · ((𝑆↑2) + 𝐵)) ∈ ℝ)
7716a1i 11 . . . . . . . . . 10 (𝜑 → 0 ∈ ℝ)
78 infregelb 10958 . . . . . . . . . 10 (((𝑅 ⊆ ℝ ∧ 𝑅 ≠ ∅ ∧ ∃𝑥 ∈ ℝ ∀𝑤𝑅 𝑥𝑤) ∧ 0 ∈ ℝ) → (0 ≤ inf(𝑅, ℝ, < ) ↔ ∀𝑤𝑅 0 ≤ 𝑤))
7914, 15, 21, 77, 78syl31anc 1326 . . . . . . . . 9 (𝜑 → (0 ≤ inf(𝑅, ℝ, < ) ↔ ∀𝑤𝑅 0 ≤ 𝑤))
8017, 79mpbird 247 . . . . . . . 8 (𝜑 → 0 ≤ inf(𝑅, ℝ, < ))
8180, 2syl6breqr 4660 . . . . . . 7 (𝜑 → 0 ≤ 𝑆)
82 eqid 2621 . . . . . . . . . . . 12 (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))) = (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))
83 oveq2 6618 . . . . . . . . . . . . . . 15 (𝑦 = ((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)) → (𝐴𝑀𝑦) = (𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))
8483fveq2d 6157 . . . . . . . . . . . . . 14 (𝑦 = ((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)) → (𝑁‘(𝐴𝑀𝑦)) = (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))))
8584eqeq2d 2631 . . . . . . . . . . . . 13 (𝑦 = ((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)) → ((𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))) = (𝑁‘(𝐴𝑀𝑦)) ↔ (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))) = (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))))
8685rspcev 3298 . . . . . . . . . . . 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)))
8763, 82, 86sylancl 693 . . . . . . . . . . 11 (𝜑 → ∃𝑦𝑌 (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))) = (𝑁‘(𝐴𝑀𝑦)))
88 eqid 2621 . . . . . . . . . . . 12 (𝑦𝑌 ↦ (𝑁‘(𝐴𝑀𝑦))) = (𝑦𝑌 ↦ (𝑁‘(𝐴𝑀𝑦)))
89 fvex 6163 . . . . . . . . . . . 12 (𝑁‘(𝐴𝑀𝑦)) ∈ V
9088, 89elrnmpti 5341 . . . . . . . . . . 11 ((𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))) ∈ ran (𝑦𝑌 ↦ (𝑁‘(𝐴𝑀𝑦))) ↔ ∃𝑦𝑌 (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))) = (𝑁‘(𝐴𝑀𝑦)))
9187, 90sylibr 224 . . . . . . . . . 10 (𝜑 → (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))) ∈ ran (𝑦𝑌 ↦ (𝑁‘(𝐴𝑀𝑦))))
9291, 12syl6eleqr 2709 . . . . . . . . 9 (𝜑 → (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))) ∈ 𝑅)
93 infrelb 10959 . . . . . . . . 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)))))
9414, 21, 92, 93syl3anc 1323 . . . . . . . 8 (𝜑 → inf(𝑅, ℝ, < ) ≤ (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))))
952, 94syl5eqbr 4653 . . . . . . 7 (𝜑𝑆 ≤ (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))))
96 le2sq2 12886 . . . . . . 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))
9724, 81, 68, 95, 96syl22anc 1324 . . . . . 6 (𝜑 → (𝑆↑2) ≤ ((𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))↑2))
98 4pos 11067 . . . . . . . . 9 0 < 4
991, 98pm3.2i 471 . . . . . . . 8 (4 ∈ ℝ ∧ 0 < 4)
100 lemul2 10827 . . . . . . . 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))))
10199, 100mp3an3 1410 . . . . . . 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))))
10225, 69, 101syl2anc 692 . . . . . 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))))
10397, 102mpbid 222 . . . . 5 (𝜑 → (4 · (𝑆↑2)) ≤ (4 · ((𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))↑2)))
10427, 71, 43, 103leadd1dd 10592 . . . 4 (𝜑 → ((4 · (𝑆↑2)) + ((𝐾𝐷𝐿)↑2)) ≤ ((4 · ((𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))↑2)) + ((𝐾𝐷𝐿)↑2)))
105 metcl 22056 . . . . . . . . . 10 ((𝐷 ∈ (Met‘𝑋) ∧ 𝐴𝑋𝐾𝑋) → (𝐴𝐷𝐾) ∈ ℝ)
10631, 9, 38, 105syl3anc 1323 . . . . . . . . 9 (𝜑 → (𝐴𝐷𝐾) ∈ ℝ)
107106resqcld 12982 . . . . . . . 8 (𝜑 → ((𝐴𝐷𝐾)↑2) ∈ ℝ)
108 metcl 22056 . . . . . . . . . 10 ((𝐷 ∈ (Met‘𝑋) ∧ 𝐴𝑋𝐿𝑋) → (𝐴𝐷𝐿) ∈ ℝ)
10931, 9, 40, 108syl3anc 1323 . . . . . . . . 9 (𝜑 → (𝐴𝐷𝐿) ∈ ℝ)
110109resqcld 12982 . . . . . . . 8 (𝜑 → ((𝐴𝐷𝐿)↑2) ∈ ℝ)
111 minvecolem2.5 . . . . . . . 8 (𝜑 → ((𝐴𝐷𝐾)↑2) ≤ ((𝑆↑2) + 𝐵))
112 minvecolem2.6 . . . . . . . 8 (𝜑 → ((𝐴𝐷𝐿)↑2) ≤ ((𝑆↑2) + 𝐵))
113107, 110, 74, 74, 111, 112le2addd 10597 . . . . . . 7 (𝜑 → (((𝐴𝐷𝐾)↑2) + ((𝐴𝐷𝐿)↑2)) ≤ (((𝑆↑2) + 𝐵) + ((𝑆↑2) + 𝐵)))
11474recnd 10019 . . . . . . . 8 (𝜑 → ((𝑆↑2) + 𝐵) ∈ ℂ)
1151142timesd 11226 . . . . . . 7 (𝜑 → (2 · ((𝑆↑2) + 𝐵)) = (((𝑆↑2) + 𝐵) + ((𝑆↑2) + 𝐵)))
116113, 115breqtrrd 4646 . . . . . 6 (𝜑 → (((𝐴𝐷𝐾)↑2) + ((𝐴𝐷𝐿)↑2)) ≤ (2 · ((𝑆↑2) + 𝐵)))
117107, 110readdcld 10020 . . . . . . 7 (𝜑 → (((𝐴𝐷𝐾)↑2) + ((𝐴𝐷𝐿)↑2)) ∈ ℝ)
118 2re 11041 . . . . . . . 8 2 ∈ ℝ
119 remulcl 9972 . . . . . . . 8 ((2 ∈ ℝ ∧ ((𝑆↑2) + 𝐵) ∈ ℝ) → (2 · ((𝑆↑2) + 𝐵)) ∈ ℝ)
120118, 74, 119sylancr 694 . . . . . . 7 (𝜑 → (2 · ((𝑆↑2) + 𝐵)) ∈ ℝ)
121 2pos 11063 . . . . . . . . 9 0 < 2
122118, 121pm3.2i 471 . . . . . . . 8 (2 ∈ ℝ ∧ 0 < 2)
123 lemul2 10827 . . . . . . . 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)))))
124122, 123mp3an3 1410 . . . . . . 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)))))
125117, 120, 124syl2anc 692 . . . . . 6 (𝜑 → ((((𝐴𝐷𝐾)↑2) + ((𝐴𝐷𝐿)↑2)) ≤ (2 · ((𝑆↑2) + 𝐵)) ↔ (2 · (((𝐴𝐷𝐾)↑2) + ((𝐴𝐷𝐿)↑2))) ≤ (2 · (2 · ((𝑆↑2) + 𝐵)))))
126116, 125mpbid 222 . . . . 5 (𝜑 → (2 · (((𝐴𝐷𝐾)↑2) + ((𝐴𝐷𝐿)↑2))) ≤ (2 · (2 · ((𝑆↑2) + 𝐵))))
1273, 4nvmcl 27368 . . . . . . . 8 ((𝑈 ∈ NrmCVec ∧ 𝐴𝑋𝐾𝑋) → (𝐴𝑀𝐾) ∈ 𝑋)
12829, 9, 38, 127syl3anc 1323 . . . . . . 7 (𝜑 → (𝐴𝑀𝐾) ∈ 𝑋)
1293, 4nvmcl 27368 . . . . . . . 8 ((𝑈 ∈ NrmCVec ∧ 𝐴𝑋𝐿𝑋) → (𝐴𝑀𝐿) ∈ 𝑋)
13029, 9, 40, 129syl3anc 1323 . . . . . . 7 (𝜑 → (𝐴𝑀𝐿) ∈ 𝑋)
1313, 48, 4, 5phpar2 27545 . . . . . . 7 ((𝑈 ∈ CPreHilOLD ∧ (𝐴𝑀𝐾) ∈ 𝑋 ∧ (𝐴𝑀𝐿) ∈ 𝑋) → (((𝑁‘((𝐴𝑀𝐾)( +𝑣𝑈)(𝐴𝑀𝐿)))↑2) + ((𝑁‘((𝐴𝑀𝐾)𝑀(𝐴𝑀𝐿)))↑2)) = (2 · (((𝑁‘(𝐴𝑀𝐾))↑2) + ((𝑁‘(𝐴𝑀𝐿))↑2))))
1327, 128, 130, 131syl3anc 1323 . . . . . 6 (𝜑 → (((𝑁‘((𝐴𝑀𝐾)( +𝑣𝑈)(𝐴𝑀𝐿)))↑2) + ((𝑁‘((𝐴𝑀𝐾)𝑀(𝐴𝑀𝐿)))↑2)) = (2 · (((𝑁‘(𝐴𝑀𝐾))↑2) + ((𝑁‘(𝐴𝑀𝐿))↑2))))
133 2cn 11042 . . . . . . . . . 10 2 ∈ ℂ
13468recnd 10019 . . . . . . . . . 10 (𝜑 → (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))) ∈ ℂ)
135 sqmul 12873 . . . . . . . . . 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)))
136133, 134, 135sylancr 694 . . . . . . . . 9 (𝜑 → ((2 · (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))))↑2) = ((2↑2) · ((𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))↑2)))
137 sq2 12907 . . . . . . . . . 10 (2↑2) = 4
138137oveq1i 6620 . . . . . . . . 9 ((2↑2) · ((𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))↑2)) = (4 · ((𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))↑2))
139136, 138syl6eq 2671 . . . . . . . 8 (𝜑 → ((2 · (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))))↑2) = (4 · ((𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))↑2)))
140133a1i 11 . . . . . . . . . . . 12 (𝜑 → 2 ∈ ℂ)
1413, 57, 5nvs 27385 . . . . . . . . . . . 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))))))
14229, 140, 66, 141syl3anc 1323 . . . . . . . . . . 11 (𝜑 → (𝑁‘(2( ·𝑠OLD𝑈)(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))) = ((abs‘2) · (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))))
143 0le2 11062 . . . . . . . . . . . . 13 0 ≤ 2
144 absid 13977 . . . . . . . . . . . . 13 ((2 ∈ ℝ ∧ 0 ≤ 2) → (abs‘2) = 2)
145118, 143, 144mp2an 707 . . . . . . . . . . . 12 (abs‘2) = 2
146145oveq1i 6620 . . . . . . . . . . 11 ((abs‘2) · (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))) = (2 · (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))))
147142, 146syl6eq 2671 . . . . . . . . . 10 (𝜑 → (𝑁‘(2( ·𝑠OLD𝑈)(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))) = (2 · (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))))
1483, 4, 57nvmdi 27370 . . . . . . . . . . . . 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)))))
14929, 140, 9, 64, 148syl13anc 1325 . . . . . . . . . . . 12 (𝜑 → (2( ·𝑠OLD𝑈)(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))) = ((2( ·𝑠OLD𝑈)𝐴)𝑀(2( ·𝑠OLD𝑈)((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))))
1503, 48, 57nv2 27354 . . . . . . . . . . . . . 14 ((𝑈 ∈ NrmCVec ∧ 𝐴𝑋) → (𝐴( +𝑣𝑈)𝐴) = (2( ·𝑠OLD𝑈)𝐴))
15129, 9, 150syl2anc 692 . . . . . . . . . . . . 13 (𝜑 → (𝐴( +𝑣𝑈)𝐴) = (2( ·𝑠OLD𝑈)𝐴))
152 2ne0 11064 . . . . . . . . . . . . . . . . 17 2 ≠ 0
153133, 152recidi 10707 . . . . . . . . . . . . . . . 16 (2 · (1 / 2)) = 1
154153oveq1i 6620 . . . . . . . . . . . . . . 15 ((2 · (1 / 2))( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)) = (1( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))
1553, 48nvgcl 27342 . . . . . . . . . . . . . . . . 17 ((𝑈 ∈ NrmCVec ∧ 𝐾𝑋𝐿𝑋) → (𝐾( +𝑣𝑈)𝐿) ∈ 𝑋)
15629, 38, 40, 155syl3anc 1323 . . . . . . . . . . . . . . . 16 (𝜑 → (𝐾( +𝑣𝑈)𝐿) ∈ 𝑋)
1573, 57nvsid 27349 . . . . . . . . . . . . . . . 16 ((𝑈 ∈ NrmCVec ∧ (𝐾( +𝑣𝑈)𝐿) ∈ 𝑋) → (1( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)) = (𝐾( +𝑣𝑈)𝐿))
15829, 156, 157syl2anc 692 . . . . . . . . . . . . . . 15 (𝜑 → (1( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)) = (𝐾( +𝑣𝑈)𝐿))
159154, 158syl5eq 2667 . . . . . . . . . . . . . 14 (𝜑 → ((2 · (1 / 2))( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)) = (𝐾( +𝑣𝑈)𝐿))
1603, 57nvsass 27350 . . . . . . . . . . . . . . 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))))
16129, 140, 47, 156, 160syl13anc 1325 . . . . . . . . . . . . . 14 (𝜑 → ((2 · (1 / 2))( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)) = (2( ·𝑠OLD𝑈)((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))
162159, 161eqtr3d 2657 . . . . . . . . . . . . 13 (𝜑 → (𝐾( +𝑣𝑈)𝐿) = (2( ·𝑠OLD𝑈)((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))
163151, 162oveq12d 6628 . . . . . . . . . . . 12 (𝜑 → ((𝐴( +𝑣𝑈)𝐴)𝑀(𝐾( +𝑣𝑈)𝐿)) = ((2( ·𝑠OLD𝑈)𝐴)𝑀(2( ·𝑠OLD𝑈)((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))))
1643, 48, 4nvaddsub4 27379 . . . . . . . . . . . . 13 ((𝑈 ∈ NrmCVec ∧ (𝐴𝑋𝐴𝑋) ∧ (𝐾𝑋𝐿𝑋)) → ((𝐴( +𝑣𝑈)𝐴)𝑀(𝐾( +𝑣𝑈)𝐿)) = ((𝐴𝑀𝐾)( +𝑣𝑈)(𝐴𝑀𝐿)))
16529, 9, 9, 38, 40, 164syl122anc 1332 . . . . . . . . . . . 12 (𝜑 → ((𝐴( +𝑣𝑈)𝐴)𝑀(𝐾( +𝑣𝑈)𝐿)) = ((𝐴𝑀𝐾)( +𝑣𝑈)(𝐴𝑀𝐿)))
166149, 163, 1653eqtr2d 2661 . . . . . . . . . . 11 (𝜑 → (2( ·𝑠OLD𝑈)(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))) = ((𝐴𝑀𝐾)( +𝑣𝑈)(𝐴𝑀𝐿)))
167166fveq2d 6157 . . . . . . . . . 10 (𝜑 → (𝑁‘(2( ·𝑠OLD𝑈)(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))) = (𝑁‘((𝐴𝑀𝐾)( +𝑣𝑈)(𝐴𝑀𝐿))))
168147, 167eqtr3d 2657 . . . . . . . . 9 (𝜑 → (2 · (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))) = (𝑁‘((𝐴𝑀𝐾)( +𝑣𝑈)(𝐴𝑀𝐿))))
169168oveq1d 6625 . . . . . . . 8 (𝜑 → ((2 · (𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿)))))↑2) = ((𝑁‘((𝐴𝑀𝐾)( +𝑣𝑈)(𝐴𝑀𝐿)))↑2))
170139, 169eqtr3d 2657 . . . . . . 7 (𝜑 → (4 · ((𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))↑2)) = ((𝑁‘((𝐴𝑀𝐾)( +𝑣𝑈)(𝐴𝑀𝐿)))↑2))
1713, 4, 5, 10imsdval 27408 . . . . . . . . . 10 ((𝑈 ∈ NrmCVec ∧ 𝐿𝑋𝐾𝑋) → (𝐿𝐷𝐾) = (𝑁‘(𝐿𝑀𝐾)))
17229, 40, 38, 171syl3anc 1323 . . . . . . . . 9 (𝜑 → (𝐿𝐷𝐾) = (𝑁‘(𝐿𝑀𝐾)))
173 metsym 22074 . . . . . . . . . 10 ((𝐷 ∈ (Met‘𝑋) ∧ 𝐾𝑋𝐿𝑋) → (𝐾𝐷𝐿) = (𝐿𝐷𝐾))
17431, 38, 40, 173syl3anc 1323 . . . . . . . . 9 (𝜑 → (𝐾𝐷𝐿) = (𝐿𝐷𝐾))
1753, 4nvnnncan1 27369 . . . . . . . . . . 11 ((𝑈 ∈ NrmCVec ∧ (𝐴𝑋𝐾𝑋𝐿𝑋)) → ((𝐴𝑀𝐾)𝑀(𝐴𝑀𝐿)) = (𝐿𝑀𝐾))
17629, 9, 38, 40, 175syl13anc 1325 . . . . . . . . . 10 (𝜑 → ((𝐴𝑀𝐾)𝑀(𝐴𝑀𝐿)) = (𝐿𝑀𝐾))
177176fveq2d 6157 . . . . . . . . 9 (𝜑 → (𝑁‘((𝐴𝑀𝐾)𝑀(𝐴𝑀𝐿))) = (𝑁‘(𝐿𝑀𝐾)))
178172, 174, 1773eqtr4d 2665 . . . . . . . 8 (𝜑 → (𝐾𝐷𝐿) = (𝑁‘((𝐴𝑀𝐾)𝑀(𝐴𝑀𝐿))))
179178oveq1d 6625 . . . . . . 7 (𝜑 → ((𝐾𝐷𝐿)↑2) = ((𝑁‘((𝐴𝑀𝐾)𝑀(𝐴𝑀𝐿)))↑2))
180170, 179oveq12d 6628 . . . . . 6 (𝜑 → ((4 · ((𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))↑2)) + ((𝐾𝐷𝐿)↑2)) = (((𝑁‘((𝐴𝑀𝐾)( +𝑣𝑈)(𝐴𝑀𝐿)))↑2) + ((𝑁‘((𝐴𝑀𝐾)𝑀(𝐴𝑀𝐿)))↑2)))
1813, 4, 5, 10imsdval 27408 . . . . . . . . . 10 ((𝑈 ∈ NrmCVec ∧ 𝐴𝑋𝐾𝑋) → (𝐴𝐷𝐾) = (𝑁‘(𝐴𝑀𝐾)))
18229, 9, 38, 181syl3anc 1323 . . . . . . . . 9 (𝜑 → (𝐴𝐷𝐾) = (𝑁‘(𝐴𝑀𝐾)))
183182oveq1d 6625 . . . . . . . 8 (𝜑 → ((𝐴𝐷𝐾)↑2) = ((𝑁‘(𝐴𝑀𝐾))↑2))
1843, 4, 5, 10imsdval 27408 . . . . . . . . . 10 ((𝑈 ∈ NrmCVec ∧ 𝐴𝑋𝐿𝑋) → (𝐴𝐷𝐿) = (𝑁‘(𝐴𝑀𝐿)))
18529, 9, 40, 184syl3anc 1323 . . . . . . . . 9 (𝜑 → (𝐴𝐷𝐿) = (𝑁‘(𝐴𝑀𝐿)))
186185oveq1d 6625 . . . . . . . 8 (𝜑 → ((𝐴𝐷𝐿)↑2) = ((𝑁‘(𝐴𝑀𝐿))↑2))
187183, 186oveq12d 6628 . . . . . . 7 (𝜑 → (((𝐴𝐷𝐾)↑2) + ((𝐴𝐷𝐿)↑2)) = (((𝑁‘(𝐴𝑀𝐾))↑2) + ((𝑁‘(𝐴𝑀𝐿))↑2)))
188187oveq2d 6626 . . . . . 6 (𝜑 → (2 · (((𝐴𝐷𝐾)↑2) + ((𝐴𝐷𝐿)↑2))) = (2 · (((𝑁‘(𝐴𝑀𝐾))↑2) + ((𝑁‘(𝐴𝑀𝐿))↑2))))
189132, 180, 1883eqtr4d 2665 . . . . 5 (𝜑 → ((4 · ((𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))↑2)) + ((𝐾𝐷𝐿)↑2)) = (2 · (((𝐴𝐷𝐾)↑2) + ((𝐴𝐷𝐿)↑2))))
190 2t2e4 11128 . . . . . . 7 (2 · 2) = 4
191190oveq1i 6620 . . . . . 6 ((2 · 2) · ((𝑆↑2) + 𝐵)) = (4 · ((𝑆↑2) + 𝐵))
192140, 140, 114mulassd 10014 . . . . . 6 (𝜑 → ((2 · 2) · ((𝑆↑2) + 𝐵)) = (2 · (2 · ((𝑆↑2) + 𝐵))))
193191, 192syl5eqr 2669 . . . . 5 (𝜑 → (4 · ((𝑆↑2) + 𝐵)) = (2 · (2 · ((𝑆↑2) + 𝐵))))
194126, 189, 1933brtr4d 4650 . . . 4 (𝜑 → ((4 · ((𝑁‘(𝐴𝑀((1 / 2)( ·𝑠OLD𝑈)(𝐾( +𝑣𝑈)𝐿))))↑2)) + ((𝐾𝐷𝐿)↑2)) ≤ (4 · ((𝑆↑2) + 𝐵)))
19544, 72, 76, 104, 194letrd 10145 . . 3 (𝜑 → ((4 · (𝑆↑2)) + ((𝐾𝐷𝐿)↑2)) ≤ (4 · ((𝑆↑2) + 𝐵)))
196 4cn 11049 . . . . 5 4 ∈ ℂ
197196a1i 11 . . . 4 (𝜑 → 4 ∈ ℂ)
19825recnd 10019 . . . 4 (𝜑 → (𝑆↑2) ∈ ℂ)
19973recnd 10019 . . . 4 (𝜑𝐵 ∈ ℂ)
200197, 198, 199adddid 10015 . . 3 (𝜑 → (4 · ((𝑆↑2) + 𝐵)) = ((4 · (𝑆↑2)) + (4 · 𝐵)))
201195, 200breqtrd 4644 . 2 (𝜑 → ((4 · (𝑆↑2)) + ((𝐾𝐷𝐿)↑2)) ≤ ((4 · (𝑆↑2)) + (4 · 𝐵)))
202 remulcl 9972 . . . 4 ((4 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (4 · 𝐵) ∈ ℝ)
2031, 73, 202sylancr 694 . . 3 (𝜑 → (4 · 𝐵) ∈ ℝ)
20443, 203, 27leadd2d 10573 . 2 (𝜑 → (((𝐾𝐷𝐿)↑2) ≤ (4 · 𝐵) ↔ ((4 · (𝑆↑2)) + ((𝐾𝐷𝐿)↑2)) ≤ ((4 · (𝑆↑2)) + (4 · 𝐵))))
205201, 204mpbird 247 1 (𝜑 → ((𝐾𝐷𝐿)↑2) ≤ (4 · 𝐵))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 196  wa 384   = wceq 1480  wcel 1987  wne 2790  wral 2907  wrex 2908  cin 3558  wss 3559  c0 3896   class class class wbr 4618  cmpt 4678  ran crn 5080  cfv 5852  (class class class)co 6610  infcinf 8298  cc 9885  cr 9886  0cc0 9887  1c1 9888   + caddc 9890   · cmul 9892   < clt 10025  cle 10026   / cdiv 10635  2c2 11021  4c4 11023  cexp 12807  abscabs 13915  Metcme 19660  MetOpencmopn 19664  NrmCVeccnv 27306   +𝑣 cpv 27307  BaseSetcba 27308   ·𝑠OLD cns 27309  𝑣 cnsb 27311  normCVcnmcv 27312  IndMetcims 27313  SubSpcss 27443  CPreHilOLDccphlo 27534  CBanccbn 27585
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1719  ax-4 1734  ax-5 1836  ax-6 1885  ax-7 1932  ax-8 1989  ax-9 1996  ax-10 2016  ax-11 2031  ax-12 2044  ax-13 2245  ax-ext 2601  ax-rep 4736  ax-sep 4746  ax-nul 4754  ax-pow 4808  ax-pr 4872  ax-un 6909  ax-cnex 9943  ax-resscn 9944  ax-1cn 9945  ax-icn 9946  ax-addcl 9947  ax-addrcl 9948  ax-mulcl 9949  ax-mulrcl 9950  ax-mulcom 9951  ax-addass 9952  ax-mulass 9953  ax-distr 9954  ax-i2m1 9955  ax-1ne0 9956  ax-1rid 9957  ax-rnegex 9958  ax-rrecex 9959  ax-cnre 9960  ax-pre-lttri 9961  ax-pre-lttrn 9962  ax-pre-ltadd 9963  ax-pre-mulgt0 9964  ax-pre-sup 9965  ax-addf 9966  ax-mulf 9967
This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3or 1037  df-3an 1038  df-tru 1483  df-ex 1702  df-nf 1707  df-sb 1878  df-eu 2473  df-mo 2474  df-clab 2608  df-cleq 2614  df-clel 2617  df-nfc 2750  df-ne 2791  df-nel 2894  df-ral 2912  df-rex 2913  df-reu 2914  df-rmo 2915  df-rab 2916  df-v 3191  df-sbc 3422  df-csb 3519  df-dif 3562  df-un 3564  df-in 3566  df-ss 3573  df-pss 3575  df-nul 3897  df-if 4064  df-pw 4137  df-sn 4154  df-pr 4156  df-tp 4158  df-op 4160  df-uni 4408  df-iun 4492  df-br 4619  df-opab 4679  df-mpt 4680  df-tr 4718  df-eprel 4990  df-id 4994  df-po 5000  df-so 5001  df-fr 5038  df-we 5040  df-xp 5085  df-rel 5086  df-cnv 5087  df-co 5088  df-dm 5089  df-rn 5090  df-res 5091  df-ima 5092  df-pred 5644  df-ord 5690  df-on 5691  df-lim 5692  df-suc 5693  df-iota 5815  df-fun 5854  df-fn 5855  df-f 5856  df-f1 5857  df-fo 5858  df-f1o 5859  df-fv 5860  df-riota 6571  df-ov 6613  df-oprab 6614  df-mpt2 6615  df-om 7020  df-1st 7120  df-2nd 7121  df-wrecs 7359  df-recs 7420  df-rdg 7458  df-er 7694  df-map 7811  df-en 7907  df-dom 7908  df-sdom 7909  df-sup 8299  df-inf 8300  df-pnf 10027  df-mnf 10028  df-xr 10029  df-ltxr 10030  df-le 10031  df-sub 10219  df-neg 10220  df-div 10636  df-nn 10972  df-2 11030  df-3 11031  df-4 11032  df-n0 11244  df-z 11329  df-uz 11639  df-rp 11784  df-xadd 11898  df-seq 12749  df-exp 12808  df-cj 13780  df-re 13781  df-im 13782  df-sqrt 13916  df-abs 13917  df-xmet 19667  df-met 19668  df-grpo 27214  df-gid 27215  df-ginv 27216  df-gdiv 27217  df-ablo 27266  df-vc 27281  df-nv 27314  df-va 27317  df-ba 27318  df-sm 27319  df-0v 27320  df-vs 27321  df-nmcv 27322  df-ims 27323  df-ssp 27444  df-ph 27535  df-cbn 27586
This theorem is referenced by:  minvecolem3  27599  minvecolem7  27606
  Copyright terms: Public domain W3C validator