Proof of Theorem minveclem38
| Step | Hyp | Ref
| Expression |
| 1 | | minvec35.x |
. . . . . 6
⊢ X =
(Base ‘U) |
| 2 | | minvec35.g |
. . . . . 6
⊢ G = (
+v ‘U) |
| 3 | | minvec35.m |
. . . . . 6
⊢ M = (
−v ‘U) |
| 4 | | minvec35.s |
. . . . . 6
⊢ S = (
·s ‘U) |
| 5 | | minvec35.n |
. . . . . 6
⊢ N =
(norm ‘U) |
| 6 | | minvec35.y |
. . . . . 6
⊢ Y =
(Base ‘W) |
| 7 | | minvec35.u |
. . . . . 6
⊢ U
∈ CPreHil |
| 8 | | minvec35.a |
. . . . . 6
⊢ A
∈ X |
| 9 | | minvec36.w |
. . . . . 6
⊢ W
∈ (SubSp ‘U) |
| 10 | | minvec36.2 |
. . . . . 6
⊢ P =
-sup(R, ℝ, < ) |
| 11 | | minvec36.1 |
. . . . . 6
⊢ R =
{x∣∃y ∈ Y
x = -(N
‘(AMy))} |
| 12 | 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 | minveclem36 8511 |
. . . . 5
⊢ (((a
∈ X ⋀ b ∈ X)
⋀ ((N ‘(AMa)) = P ⋀
(N ‘(AMb)) = P)) →
((N ‘(aMb))↑2) = ((2 · ((P↑2) + (P↑2))) − ((N ‘((AMa)G(AMb)))↑2))) |
| 13 | 7, 9, 6, 1 | minveclem3 8478 |
. . . . . . 7
⊢ Y
⊆ X |
| 14 | 13 | sseli 2055 |
. . . . . 6
⊢ (a
∈ Y → a ∈ X) |
| 15 | 13 | sseli 2055 |
. . . . . 6
⊢ (b
∈ Y → b ∈ X) |
| 16 | 14, 15 | anim12i 333 |
. . . . 5
⊢ ((a
∈ Y ⋀ b ∈ Y)
→ (a ∈ X ⋀ b
∈ X)) |
| 17 | 12, 16 | sylan 448 |
. . . 4
⊢ (((a
∈ Y ⋀ b ∈ Y)
⋀ ((N ‘(AMa)) = P ⋀
(N ‘(AMb)) = P)) →
((N ‘(aMb))↑2) = ((2 · ((P↑2) + (P↑2))) − ((N ‘((AMa)G(AMb)))↑2))) |
| 18 | 11, 7, 3, 5, 1, 9, 6, 8, 10 | minveclem12 8487 |
. . . . . . . . . . 11
⊢ P
∈ ℝ |
| 19 | 18 | resqcl 6554 |
. . . . . . . . . 10
⊢ (P↑2) ∈ ℝ |
| 20 | | 4re 5929 |
. . . . . . . . . . . 12
⊢ 4 ∈ ℝ |
| 21 | | 0re 5412 |
. . . . . . . . . . . . 13
⊢ 0 ∈ ℝ |
| 22 | | 4pos 5939 |
. . . . . . . . . . . . 13
⊢ 0 < 4 |
| 23 | 21, 20, 22 | ltlei 5554 |
. . . . . . . . . . . 12
⊢ 0 ≤ 4 |
| 24 | 20, 23 | pm3.2i 285 |
. . . . . . . . . . 11
⊢ (4 ∈ ℝ ⋀ 0 ≤
4) |
| 25 | | lemul2it 5795 |
. . . . . . . . . . 11
⊢ ((((P↑2) ∈ ℝ ⋀ ((N ‘(AM((1 /
2)S(aGb))))↑2) ∈ ℝ ⋀ (4 ∈
ℝ ⋀ 0 ≤ 4)) ⋀ (P↑2) ≤ ((N ‘(AM((1 /
2)S(aGb))))↑2)) → (4 · (P↑2)) ≤ (4 · ((N ‘(AM((1 /
2)S(aGb))))↑2))) |
| 26 | 24, 25 | mp3anl3 909 |
. . . . . . . . . 10
⊢ ((((P↑2) ∈ ℝ ⋀ ((N ‘(AM((1 /
2)S(aGb))))↑2) ∈ ℝ) ⋀ (P↑2) ≤ ((N ‘(AM((1 /
2)S(aGb))))↑2)) → (4 · (P↑2)) ≤ (4 · ((N ‘(AM((1 /
2)S(aGb))))↑2))) |
| 27 | 19, 26 | mpanl1 704 |
. . . . . . . . 9
⊢ ((((N
‘(AM((1 / 2)S(aGb))))↑2)
∈ ℝ ⋀ (P↑2) ≤
((N ‘(AM((1 /
2)S(aGb))))↑2)) → (4 · (P↑2)) ≤ (4 · ((N ‘(AM((1 /
2)S(aGb))))↑2))) |
| 28 | 7 | phnvi 8406 |
. . . . . . . . . . . . . . 15
⊢ U
∈ NrmCVec |
| 29 | 1, 2 | nvgcl 8179 |
. . . . . . . . . . . . . . 15
⊢ ((U
∈ NrmCVec ⋀ a ∈ X ⋀ b
∈ X) → (aGb) ∈ X) |
| 30 | 28, 29 | mp3an1 900 |
. . . . . . . . . . . . . 14
⊢ ((a
∈ X ⋀ b ∈ X)
→ (aGb) ∈
X) |
| 31 | 30, 14, 15 | syl2an 454 |
. . . . . . . . . . . . 13
⊢ ((a
∈ Y ⋀ b ∈ Y)
→ (aGb) ∈
X) |
| 32 | | 2cn 5927 |
. . . . . . . . . . . . . . 15
⊢ 2 ∈ ℂ |
| 33 | | 2ne0 5937 |
. . . . . . . . . . . . . . 15
⊢ 2 ≠ 0 |
| 34 | 32, 33 | reccl 5682 |
. . . . . . . . . . . . . 14
⊢ (1 / 2) ∈ ℂ |
| 35 | 1, 4 | nvscl 8187 |
. . . . . . . . . . . . . 14
⊢ ((U
∈ NrmCVec ⋀ (1 / 2) ∈ ℂ ⋀ (aGb) ∈ X)
→ ((1 / 2)S(aGb)) ∈ X) |
| 36 | 28, 34, 35 | mp3an12 903 |
. . . . . . . . . . . . 13
⊢ ((aGb) ∈ X
→ ((1 / 2)S(aGb)) ∈ X) |
| 37 | 31, 36 | syl 10 |
. . . . . . . . . . . 12
⊢ ((a
∈ Y ⋀ b ∈ Y)
→ ((1 / 2)S(aGb)) ∈ X) |
| 38 | 1, 3 | nvmcl 8207 |
. . . . . . . . . . . . 13
⊢ ((U
∈ NrmCVec ⋀ A ∈ X ⋀ ((1 / 2)S(aGb)) ∈
X) → (AM((1 /
2)S(aGb))) ∈ X) |
| 39 | 28, 8, 38 | mp3an12 903 |
. . . . . . . . . . . 12
⊢ (((1 / 2)S(aGb)) ∈
X → (AM((1 /
2)S(aGb))) ∈ X) |
| 40 | 37, 39 | syl 10 |
. . . . . . . . . . 11
⊢ ((a
∈ Y ⋀ b ∈ Y)
→ (AM((1 / 2)S(aGb))) ∈
X) |
| 41 | 1, 5 | nvcl 8227 |
. . . . . . . . . . . 12
⊢ ((U
∈ NrmCVec ⋀ (AM((1 / 2)S(aGb))) ∈
X) → (N ‘(AM((1 /
2)S(aGb)))) ∈ ℝ) |
| 42 | 28, 41 | mpan 693 |
. . . . . . . . . . 11
⊢ ((AM((1 /
2)S(aGb))) ∈ X
→ (N ‘(AM((1 /
2)S(aGb)))) ∈ ℝ) |
| 43 | 40, 42 | syl 10 |
. . . . . . . . . 10
⊢ ((a
∈ Y ⋀ b ∈ Y)
→ (N ‘(AM((1 /
2)S(aGb)))) ∈ ℝ) |
| 44 | | resqclt 6552 |
. . . . . . . . . 10
⊢ ((N
‘(AM((1 / 2)S(aGb)))) ∈
ℝ → ((N ‘(AM((1 /
2)S(aGb))))↑2) ∈ ℝ) |
| 45 | 43, 44 | syl 10 |
. . . . . . . . 9
⊢ ((a
∈ Y ⋀ b ∈ Y)
→ ((N ‘(AM((1 /
2)S(aGb))))↑2) ∈ ℝ) |
| 46 | 11, 7, 3, 5, 1, 9, 6, 8, 10 | minveclem14 8489 |
. . . . . . . . . . 11
⊢ 0 ≤ P |
| 47 | | le2sqit 6563 |
. . . . . . . . . . 11
⊢ (((P
∈ ℝ ⋀ 0 ≤ P) ⋀
((N ‘(AM((1 /
2)S(aGb)))) ∈ ℝ ⋀ P ≤ (N
‘(AM((1 / 2)S(aGb)))))) →
(P↑2) ≤ ((N ‘(AM((1 /
2)S(aGb))))↑2)) |
| 48 | 18, 46, 47 | mpanl12 706 |
. . . . . . . . . 10
⊢ (((N
‘(AM((1 / 2)S(aGb)))) ∈
ℝ ⋀ P ≤ (N ‘(AM((1 /
2)S(aGb))))) → (P↑2) ≤ ((N ‘(AM((1 /
2)S(aGb))))↑2)) |
| 49 | 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 | minveclem37 8512 |
. . . . . . . . . 10
⊢ ((a
∈ Y ⋀ b ∈ Y)
→ P ≤ (N ‘(AM((1 /
2)S(aGb))))) |
| 50 | 48, 43, 49 | sylanc 471 |
. . . . . . . . 9
⊢ ((a
∈ Y ⋀ b ∈ Y)
→ (P↑2) ≤ ((N ‘(AM((1 /
2)S(aGb))))↑2)) |
| 51 | 27, 45, 50 | sylanc 471 |
. . . . . . . 8
⊢ ((a
∈ Y ⋀ b ∈ Y)
→ (4 · (P↑2)) ≤ (4
· ((N ‘(AM((1 /
2)S(aGb))))↑2))) |
| 52 | 19 | recn 5286 |
. . . . . . . . . 10
⊢ (P↑2) ∈ ℂ |
| 53 | 32, 32, 52 | mulass 5297 |
. . . . . . . . 9
⊢ ((2 · 2) · (P↑2)) = (2 · (2 · (P↑2))) |
| 54 | | 2t2e4 5969 |
. . . . . . . . . 10
⊢ (2 · 2) = 4 |
| 55 | 54 | opreq1i 3956 |
. . . . . . . . 9
⊢ ((2 · 2) · (P↑2)) = (4 · (P↑2)) |
| 56 | 52 | 2times 5950 |
. . . . . . . . . 10
⊢ (2 · (P↑2)) = ((P↑2) + (P↑2)) |
| 57 | 56 | opreq2i 3957 |
. . . . . . . . 9
⊢ (2 · (2 · (P↑2))) = (2 · ((P↑2) + (P↑2))) |
| 58 | 53, 55, 57 | 3eqtr3r 1496 |
. . . . . . . 8
⊢ (2 · ((P↑2) + (P↑2))) = (4 · (P↑2)) |
| 59 | 51, 58 | syl5eqbr 2638 |
. . . . . . 7
⊢ ((a
∈ Y ⋀ b ∈ Y)
→ (2 · ((P↑2) + (P↑2))) ≤ (4 · ((N ‘(AM((1 /
2)S(aGb))))↑2))) |
| 60 | 43 | recnd 5287 |
. . . . . . . . . 10
⊢ ((a
∈ Y ⋀ b ∈ Y)
→ (N ‘(AM((1 /
2)S(aGb)))) ∈ ℂ) |
| 61 | | sqmult 6543 |
. . . . . . . . . . 11
⊢ ((2 ∈ ℂ ⋀ (N ‘(AM((1 /
2)S(aGb)))) ∈ ℂ) → ((2 · (N ‘(AM((1 /
2)S(aGb)))))↑2) = ((2↑2) · ((N ‘(AM((1 /
2)S(aGb))))↑2))) |
| 62 | 32, 61 | mpan 693 |
. . . . . . . . . 10
⊢ ((N
‘(AM((1 / 2)S(aGb)))) ∈
ℂ → ((2 · (N
‘(AM((1 / 2)S(aGb)))))↑2)
= ((2↑2) · ((N ‘(AM((1 /
2)S(aGb))))↑2))) |
| 63 | 60, 62 | syl 10 |
. . . . . . . . 9
⊢ ((a
∈ Y ⋀ b ∈ Y)
→ ((2 · (N ‘(AM((1 /
2)S(aGb)))))↑2) = ((2↑2) · ((N ‘(AM((1 /
2)S(aGb))))↑2))) |
| 64 | | sq2 6569 |
. . . . . . . . . 10
⊢ (2↑2) = 4 |
| 65 | 64 | opreq1i 3956 |
. . . . . . . . 9
⊢ ((2↑2) · ((N ‘(AM((1 /
2)S(aGb))))↑2)) = (4 · ((N ‘(AM((1 /
2)S(aGb))))↑2)) |
| 66 | 63, 65 | syl6req 1516 |
. . . . . . . 8
⊢ ((a
∈ Y ⋀ b ∈ Y)
→ (4 · ((N ‘(AM((1 /
2)S(aGb))))↑2)) = ((2 · (N ‘(AM((1 /
2)S(aGb)))))↑2)) |
| 67 | 1, 2, 3, 4, 5, 6, 7, 8 | minveclem35 8510 |
. . . . . . . . . 10
⊢ ((a
∈ X ⋀ b ∈ X)
→ (N ‘((AMa)G(AMb))) = (2 · (N ‘(AM((1 /
2)S(aGb)))))) |
| 68 | 67, 14, 15 | syl2an 454 |
. . . . . . . . 9
⊢ ((a
∈ Y ⋀ b ∈ Y)
→ (N ‘((AMa)G(AMb))) = (2 · (N ‘(AM((1 /
2)S(aGb)))))) |
| 69 | 68 | opreq1d 3960 |
. . . . . . . 8
⊢ ((a
∈ Y ⋀ b ∈ Y)
→ ((N ‘((AMa)G(AMb)))↑2) = ((2 · (N ‘(AM((1 /
2)S(aGb)))))↑2)) |
| 70 | 66, 69 | eqtr4d 1502 |
. . . . . . 7
⊢ ((a
∈ Y ⋀ b ∈ Y)
→ (4 · ((N ‘(AM((1 /
2)S(aGb))))↑2)) = ((N ‘((AMa)G(AMb)))↑2)) |
| 71 | 59, 70 | breqtrd 2629 |
. . . . . 6
⊢ ((a
∈ Y ⋀ b ∈ Y)
→ (2 · ((P↑2) + (P↑2))) ≤ ((N ‘((AMa)G(AMb)))↑2)) |
| 72 | 1, 2 | nvgcl 8179 |
. . . . . . . . . . . 12
⊢ ((U
∈ NrmCVec ⋀ (AMa) ∈
X ⋀ (AMb) ∈ X)
→ ((AMa)G(AMb)) ∈
X) |
| 73 | 28, 72 | mp3an1 900 |
. . . . . . . . . . 11
⊢ (((AMa) ∈ X
⋀ (AMb) ∈
X) → ((AMa)G(AMb)) ∈ X) |
| 74 | 1, 3 | nvmcl 8207 |
. . . . . . . . . . . 12
⊢ ((U
∈ NrmCVec ⋀ A ∈ X ⋀ a
∈ X) → (AMa) ∈ X) |
| 75 | 28, 8, 74 | mp3an12 903 |
. . . . . . . . . . 11
⊢ (a
∈ X → (AMa) ∈ X) |
| 76 | 1, 3 | nvmcl 8207 |
. . . . . . . . . . . 12
⊢ ((U
∈ NrmCVec ⋀ A ∈ X ⋀ b
∈ X) → (AMb) ∈ X) |
| 77 | 28, 8, 76 | mp3an12 903 |
. . . . . . . . . . 11
⊢ (b
∈ X → (AMb) ∈ X) |
| 78 | 73, 75, 77 | syl2an 454 |
. . . . . . . . . 10
⊢ ((a
∈ X ⋀ b ∈ X)
→ ((AMa)G(AMb)) ∈
X) |
| 79 | 1, 5 | nvcl 8227 |
. . . . . . . . . . 11
⊢ ((U
∈ NrmCVec ⋀ ((AMa)G(AMb)) ∈
X) → (N ‘((AMa)G(AMb))) ∈ ℝ) |
| 80 | 28, 79 | mpan 693 |
. . . . . . . . . 10
⊢ (((AMa)G(AMb)) ∈ X
→ (N ‘((AMa)G(AMb))) ∈ ℝ) |
| 81 | 78, 80 | syl 10 |
. . . . . . . . 9
⊢ ((a
∈ X ⋀ b ∈ X)
→ (N ‘((AMa)G(AMb))) ∈ ℝ) |
| 82 | | resqclt 6552 |
. . . . . . . . 9
⊢ ((N
‘((AMa)G(AMb))) ∈
ℝ → ((N ‘((AMa)G(AMb)))↑2) ∈ ℝ) |
| 83 | 81, 82 | syl 10 |
. . . . . . . 8
⊢ ((a
∈ X ⋀ b ∈ X)
→ ((N ‘((AMa)G(AMb)))↑2) ∈ ℝ) |
| 84 | | 2re 5926 |
. . . . . . . . . 10
⊢ 2 ∈ ℝ |
| 85 | 19, 19 | readdcl 5306 |
. . . . . . . . . 10
⊢ ((P↑2) + (P↑2)) ∈ ℝ |
| 86 | 84, 85 | remulcl 5307 |
. . . . . . . . 9
⊢ (2 · ((P↑2) + (P↑2))) ∈ ℝ |
| 87 | | suble0t 5648 |
. . . . . . . . 9
⊢ (((2 · ((P↑2) + (P↑2))) ∈ ℝ ⋀ ((N ‘((AMa)G(AMb)))↑2) ∈ ℝ) → (((2 ·
((P↑2) + (P↑2))) − ((N ‘((AMa)G(AMb)))↑2)) ≤ 0 ↔ (2 · ((P↑2) + (P↑2))) ≤ ((N ‘((AMa)G(AMb)))↑2))) |
| 88 | 86, 87 | mpan 693 |
. . . . . . . 8
⊢ (((N
‘((AMa)G(AMb)))↑2)
∈ ℝ → (((2 · ((P↑2) + (P↑2))) − ((N ‘((AMa)G(AMb)))↑2)) ≤ 0 ↔ (2 · ((P↑2) + (P↑2))) ≤ ((N ‘((AMa)G(AMb)))↑2))) |
| 89 | 83, 88 | syl 10 |
. . . . . . 7
⊢ ((a
∈ X ⋀ b ∈ X)
→ (((2 · ((P↑2) +
(P↑2))) − ((N ‘((AMa)G(AMb)))↑2)) ≤ 0 ↔ (2 · ((P↑2) + (P↑2))) ≤ ((N ‘((AMa)G(AMb)))↑2))) |
| 90 | 89, 14, 15 | syl2an 454 |
. . . . . 6
⊢ ((a
∈ Y ⋀ b ∈ Y)
→ (((2 · ((P↑2) +
(P↑2))) − ((N ‘((AMa)G(AMb)))↑2)) ≤ 0 ↔ (2 · ((P↑2) + (P↑2))) ≤ ((N ‘((AMa)G(AMb)))↑2))) |
| 91 | 71, 90 | mpbird 196 |
. . . . 5
⊢ ((a
∈ Y ⋀ b ∈ Y)
→ ((2 · ((P↑2) + (P↑2))) − ((N ‘((AMa)G(AMb)))↑2)) ≤ 0) |
| 92 | 91 | adantr 389 |
. . . 4
⊢ (((a
∈ Y ⋀ b ∈ Y)
⋀ ((N ‘(AMa)) = P ⋀
(N ‘(AMb)) = P)) →
((2 · ((P↑2) + (P↑2))) − ((N ‘((AMa)G(AMb)))↑2)) ≤ 0) |
| 93 | 17, 92 | eqbrtrd 2625 |
. . 3
⊢ (((a
∈ Y ⋀ b ∈ Y)
⋀ ((N ‘(AMa)) = P ⋀
(N ‘(AMb)) = P)) →
((N ‘(aMb))↑2) ≤ 0) |
| 94 | | sq0 6566 |
. . 3
⊢ (0↑2) = 0 |
| 95 | 93, 94 | syl6breqr 2645 |
. 2
⊢ (((a
∈ Y ⋀ b ∈ Y)
⋀ ((N ‘(AMa)) = P ⋀
(N ‘(AMb)) = P)) →
((N ‘(aMb))↑2) ≤ (0↑2)) |
| 96 | 1, 3 | nvmcl 8207 |
. . . . . 6
⊢ ((U
∈ NrmCVec ⋀ a ∈ X ⋀ b
∈ X) → (aMb) ∈ X) |
| 97 | 28, 96 | mp3an1 900 |
. . . . 5
⊢ ((a
∈ X ⋀ b ∈ X)
→ (aMb) ∈
X) |
| 98 | 21 | leid 5584 |
. . . . . . . 8
⊢ 0 ≤ 0 |
| 99 | 21, 98 | pm3.2i 285 |
. . . . . . 7
⊢ (0 ∈ ℝ ⋀ 0 ≤
0) |
| 100 | | le2sqt 6562 |
. . . . . . 7
⊢ ((((N
‘(aMb)) ∈
ℝ ⋀ 0 ≤ (N ‘(aMb))) ⋀ (0 ∈ ℝ ⋀ 0 ≤ 0))
→ ((N ‘(aMb)) ≤ 0 ↔ ((N ‘(aMb))↑2) ≤ (0↑2))) |
| 101 | 99, 100 | mpan2 694 |
. . . . . 6
⊢ (((N
‘(aMb)) ∈
ℝ ⋀ 0 ≤ (N ‘(aMb))) → ((N
‘(aMb)) ≤ 0
↔ ((N ‘(aMb))↑2) ≤ (0↑2))) |
| 102 | 1, 5 | nvcl 8227 |
. . . . . . 7
⊢ ((U
∈ NrmCVec ⋀ (aMb) ∈
X) → (N ‘(aMb)) ∈ ℝ) |
| 103 | 28, 102 | mpan 693 |
. . . . . 6
⊢ ((aMb) ∈ X
→ (N ‘(aMb)) ∈ ℝ) |
| 104 | 1, 5 | nvge0 8241 |
. . . . . . 7
⊢ ((U
∈ NrmCVec ⋀ (aMb) ∈
X) → 0 ≤ (N ‘(aMb))) |
| 105 | 28, 104 | mpan 693 |
. . . . . 6
⊢ ((aMb) ∈ X
→ 0 ≤ (N ‘(aMb))) |
| 106 | 101, 103, 105 | sylanc 471 |
. . . . 5
⊢ ((aMb) ∈ X
→ ((N ‘(aMb)) ≤ 0 ↔ ((N ‘(aMb))↑2) ≤ (0↑2))) |
| 107 | 97, 106 | syl 10 |
. . . 4
⊢ ((a
∈ X ⋀ b ∈ X)
→ ((N ‘(aMb)) ≤ 0 ↔ ((N ‘(aMb))↑2) ≤ (0↑2))) |
| 108 | 107, 14, 15 | syl2an 454 |
. . 3
⊢ ((a
∈ Y ⋀ b ∈ Y)
→ ((N ‘(aMb)) ≤ 0 ↔ ((N ‘(aMb))↑2) ≤ (0↑2))) |
| 109 | 108 | adantr 389 |
. 2
⊢ (((a
∈ Y ⋀ b ∈ Y)
⋀ ((N ‘(AMa)) = P ⋀
(N ‘(AMb)) = P)) →
((N ‘(aMb)) ≤ 0 ↔ ((N ‘(aMb))↑2) ≤ (0↑2))) |
| 110 | 95, 109 | mpbird 196 |
1
⊢ (((a
∈ Y ⋀ b ∈ Y)
⋀ ((N ‘(AMa)) = P ⋀
(N ‘(AMb)) = P)) →
(N ‘(aMb)) ≤ 0) |