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Theorem nmcexi 29813
Description: Lemma for nmcopexi 29814 and nmcfnexi 29838. The norm of a continuous linear Hilbert space operator or functional exists. Theorem 3.5(i) of [Beran] p. 99. (Contributed by Mario Carneiro, 17-Nov-2013.) (Proof shortened by Mario Carneiro, 23-Dec-2013.) (New usage is discouraged.)
Hypotheses
Ref Expression
nmcex.1 𝑦 ∈ ℝ+𝑧 ∈ ℋ ((norm𝑧) < 𝑦 → (𝑁‘(𝑇𝑧)) < 1)
nmcex.2 (𝑆𝑇) = sup({𝑚 ∣ ∃𝑥 ∈ ℋ ((norm𝑥) ≤ 1 ∧ 𝑚 = (𝑁‘(𝑇𝑥)))}, ℝ*, < )
nmcex.3 (𝑥 ∈ ℋ → (𝑁‘(𝑇𝑥)) ∈ ℝ)
nmcex.4 (𝑁‘(𝑇‘0)) = 0
nmcex.5 (((𝑦 / 2) ∈ ℝ+𝑥 ∈ ℋ) → ((𝑦 / 2) · (𝑁‘(𝑇𝑥))) = (𝑁‘(𝑇‘((𝑦 / 2) · 𝑥))))
Assertion
Ref Expression
nmcexi (𝑆𝑇) ∈ ℝ
Distinct variable groups:   𝑥,𝑚,𝑦,𝑧,𝑁   𝑇,𝑚,𝑥,𝑦,𝑧
Allowed substitution hints:   𝑆(𝑥,𝑦,𝑧,𝑚)

Proof of Theorem nmcexi
Dummy variable 𝑛 is distinct from all other variables.
StepHypRef Expression
1 nmcex.2 . . 3 (𝑆𝑇) = sup({𝑚 ∣ ∃𝑥 ∈ ℋ ((norm𝑥) ≤ 1 ∧ 𝑚 = (𝑁‘(𝑇𝑥)))}, ℝ*, < )
2 nmcex.3 . . . . . . . . 9 (𝑥 ∈ ℋ → (𝑁‘(𝑇𝑥)) ∈ ℝ)
3 eleq1 2880 . . . . . . . . 9 (𝑚 = (𝑁‘(𝑇𝑥)) → (𝑚 ∈ ℝ ↔ (𝑁‘(𝑇𝑥)) ∈ ℝ))
42, 3syl5ibrcom 250 . . . . . . . 8 (𝑥 ∈ ℋ → (𝑚 = (𝑁‘(𝑇𝑥)) → 𝑚 ∈ ℝ))
54imp 410 . . . . . . 7 ((𝑥 ∈ ℋ ∧ 𝑚 = (𝑁‘(𝑇𝑥))) → 𝑚 ∈ ℝ)
65adantrl 715 . . . . . 6 ((𝑥 ∈ ℋ ∧ ((norm𝑥) ≤ 1 ∧ 𝑚 = (𝑁‘(𝑇𝑥)))) → 𝑚 ∈ ℝ)
76rexlimiva 3243 . . . . 5 (∃𝑥 ∈ ℋ ((norm𝑥) ≤ 1 ∧ 𝑚 = (𝑁‘(𝑇𝑥))) → 𝑚 ∈ ℝ)
87abssi 4000 . . . 4 {𝑚 ∣ ∃𝑥 ∈ ℋ ((norm𝑥) ≤ 1 ∧ 𝑚 = (𝑁‘(𝑇𝑥)))} ⊆ ℝ
9 ax-hv0cl 28790 . . . . . . 7 0 ∈ ℋ
10 norm0 28915 . . . . . . . . 9 (norm‘0) = 0
11 0le1 11156 . . . . . . . . 9 0 ≤ 1
1210, 11eqbrtri 5054 . . . . . . . 8 (norm‘0) ≤ 1
13 nmcex.4 . . . . . . . . 9 (𝑁‘(𝑇‘0)) = 0
1413eqcomi 2810 . . . . . . . 8 0 = (𝑁‘(𝑇‘0))
1512, 14pm3.2i 474 . . . . . . 7 ((norm‘0) ≤ 1 ∧ 0 = (𝑁‘(𝑇‘0)))
16 fveq2 6649 . . . . . . . . . 10 (𝑥 = 0 → (norm𝑥) = (norm‘0))
1716breq1d 5043 . . . . . . . . 9 (𝑥 = 0 → ((norm𝑥) ≤ 1 ↔ (norm‘0) ≤ 1))
18 2fveq3 6654 . . . . . . . . . 10 (𝑥 = 0 → (𝑁‘(𝑇𝑥)) = (𝑁‘(𝑇‘0)))
1918eqeq2d 2812 . . . . . . . . 9 (𝑥 = 0 → (0 = (𝑁‘(𝑇𝑥)) ↔ 0 = (𝑁‘(𝑇‘0))))
2017, 19anbi12d 633 . . . . . . . 8 (𝑥 = 0 → (((norm𝑥) ≤ 1 ∧ 0 = (𝑁‘(𝑇𝑥))) ↔ ((norm‘0) ≤ 1 ∧ 0 = (𝑁‘(𝑇‘0)))))
2120rspcev 3574 . . . . . . 7 ((0 ∈ ℋ ∧ ((norm‘0) ≤ 1 ∧ 0 = (𝑁‘(𝑇‘0)))) → ∃𝑥 ∈ ℋ ((norm𝑥) ≤ 1 ∧ 0 = (𝑁‘(𝑇𝑥))))
229, 15, 21mp2an 691 . . . . . 6 𝑥 ∈ ℋ ((norm𝑥) ≤ 1 ∧ 0 = (𝑁‘(𝑇𝑥)))
23 c0ex 10628 . . . . . . 7 0 ∈ V
24 eqeq1 2805 . . . . . . . . 9 (𝑚 = 0 → (𝑚 = (𝑁‘(𝑇𝑥)) ↔ 0 = (𝑁‘(𝑇𝑥))))
2524anbi2d 631 . . . . . . . 8 (𝑚 = 0 → (((norm𝑥) ≤ 1 ∧ 𝑚 = (𝑁‘(𝑇𝑥))) ↔ ((norm𝑥) ≤ 1 ∧ 0 = (𝑁‘(𝑇𝑥)))))
2625rexbidv 3259 . . . . . . 7 (𝑚 = 0 → (∃𝑥 ∈ ℋ ((norm𝑥) ≤ 1 ∧ 𝑚 = (𝑁‘(𝑇𝑥))) ↔ ∃𝑥 ∈ ℋ ((norm𝑥) ≤ 1 ∧ 0 = (𝑁‘(𝑇𝑥)))))
2723, 26elab 3618 . . . . . 6 (0 ∈ {𝑚 ∣ ∃𝑥 ∈ ℋ ((norm𝑥) ≤ 1 ∧ 𝑚 = (𝑁‘(𝑇𝑥)))} ↔ ∃𝑥 ∈ ℋ ((norm𝑥) ≤ 1 ∧ 0 = (𝑁‘(𝑇𝑥))))
2822, 27mpbir 234 . . . . 5 0 ∈ {𝑚 ∣ ∃𝑥 ∈ ℋ ((norm𝑥) ≤ 1 ∧ 𝑚 = (𝑁‘(𝑇𝑥)))}
2928ne0ii 4256 . . . 4 {𝑚 ∣ ∃𝑥 ∈ ℋ ((norm𝑥) ≤ 1 ∧ 𝑚 = (𝑁‘(𝑇𝑥)))} ≠ ∅
30 nmcex.1 . . . . 5 𝑦 ∈ ℝ+𝑧 ∈ ℋ ((norm𝑧) < 𝑦 → (𝑁‘(𝑇𝑧)) < 1)
31 2rp 12386 . . . . . . . . . 10 2 ∈ ℝ+
32 rpdivcl 12406 . . . . . . . . . 10 ((2 ∈ ℝ+𝑦 ∈ ℝ+) → (2 / 𝑦) ∈ ℝ+)
3331, 32mpan 689 . . . . . . . . 9 (𝑦 ∈ ℝ+ → (2 / 𝑦) ∈ ℝ+)
3433rpred 12423 . . . . . . . 8 (𝑦 ∈ ℝ+ → (2 / 𝑦) ∈ ℝ)
3534adantr 484 . . . . . . 7 ((𝑦 ∈ ℝ+ ∧ ∀𝑧 ∈ ℋ ((norm𝑧) < 𝑦 → (𝑁‘(𝑇𝑧)) < 1)) → (2 / 𝑦) ∈ ℝ)
36 rpre 12389 . . . . . . . . . . . . . . . . . . . . . 22 (𝑦 ∈ ℝ+𝑦 ∈ ℝ)
3736adantr 484 . . . . . . . . . . . . . . . . . . . . 21 ((𝑦 ∈ ℝ+ ∧ (𝑥 ∈ ℋ ∧ (norm𝑥) ≤ 1)) → 𝑦 ∈ ℝ)
3837rehalfcld 11876 . . . . . . . . . . . . . . . . . . . 20 ((𝑦 ∈ ℝ+ ∧ (𝑥 ∈ ℋ ∧ (norm𝑥) ≤ 1)) → (𝑦 / 2) ∈ ℝ)
3938recnd 10662 . . . . . . . . . . . . . . . . . . 19 ((𝑦 ∈ ℝ+ ∧ (𝑥 ∈ ℋ ∧ (norm𝑥) ≤ 1)) → (𝑦 / 2) ∈ ℂ)
40 simprl 770 . . . . . . . . . . . . . . . . . . 19 ((𝑦 ∈ ℝ+ ∧ (𝑥 ∈ ℋ ∧ (norm𝑥) ≤ 1)) → 𝑥 ∈ ℋ)
41 hvmulcl 28800 . . . . . . . . . . . . . . . . . . 19 (((𝑦 / 2) ∈ ℂ ∧ 𝑥 ∈ ℋ) → ((𝑦 / 2) · 𝑥) ∈ ℋ)
4239, 40, 41syl2anc 587 . . . . . . . . . . . . . . . . . 18 ((𝑦 ∈ ℝ+ ∧ (𝑥 ∈ ℋ ∧ (norm𝑥) ≤ 1)) → ((𝑦 / 2) · 𝑥) ∈ ℋ)
43 normcl 28912 . . . . . . . . . . . . . . . . . 18 (((𝑦 / 2) · 𝑥) ∈ ℋ → (norm‘((𝑦 / 2) · 𝑥)) ∈ ℝ)
4442, 43syl 17 . . . . . . . . . . . . . . . . 17 ((𝑦 ∈ ℝ+ ∧ (𝑥 ∈ ℋ ∧ (norm𝑥) ≤ 1)) → (norm‘((𝑦 / 2) · 𝑥)) ∈ ℝ)
45 simprr 772 . . . . . . . . . . . . . . . . . . 19 ((𝑦 ∈ ℝ+ ∧ (𝑥 ∈ ℋ ∧ (norm𝑥) ≤ 1)) → (norm𝑥) ≤ 1)
46 normcl 28912 . . . . . . . . . . . . . . . . . . . . 21 (𝑥 ∈ ℋ → (norm𝑥) ∈ ℝ)
4746ad2antrl 727 . . . . . . . . . . . . . . . . . . . 20 ((𝑦 ∈ ℝ+ ∧ (𝑥 ∈ ℋ ∧ (norm𝑥) ≤ 1)) → (norm𝑥) ∈ ℝ)
48 1red 10635 . . . . . . . . . . . . . . . . . . . 20 ((𝑦 ∈ ℝ+ ∧ (𝑥 ∈ ℋ ∧ (norm𝑥) ≤ 1)) → 1 ∈ ℝ)
49 rphalfcl 12408 . . . . . . . . . . . . . . . . . . . . 21 (𝑦 ∈ ℝ+ → (𝑦 / 2) ∈ ℝ+)
5049adantr 484 . . . . . . . . . . . . . . . . . . . 20 ((𝑦 ∈ ℝ+ ∧ (𝑥 ∈ ℋ ∧ (norm𝑥) ≤ 1)) → (𝑦 / 2) ∈ ℝ+)
5147, 48, 50lemul2d 12467 . . . . . . . . . . . . . . . . . . 19 ((𝑦 ∈ ℝ+ ∧ (𝑥 ∈ ℋ ∧ (norm𝑥) ≤ 1)) → ((norm𝑥) ≤ 1 ↔ ((𝑦 / 2) · (norm𝑥)) ≤ ((𝑦 / 2) · 1)))
5245, 51mpbid 235 . . . . . . . . . . . . . . . . . 18 ((𝑦 ∈ ℝ+ ∧ (𝑥 ∈ ℋ ∧ (norm𝑥) ≤ 1)) → ((𝑦 / 2) · (norm𝑥)) ≤ ((𝑦 / 2) · 1))
53 rpcn 12391 . . . . . . . . . . . . . . . . . . . . 21 ((𝑦 / 2) ∈ ℝ+ → (𝑦 / 2) ∈ ℂ)
54 norm-iii 28927 . . . . . . . . . . . . . . . . . . . . 21 (((𝑦 / 2) ∈ ℂ ∧ 𝑥 ∈ ℋ) → (norm‘((𝑦 / 2) · 𝑥)) = ((abs‘(𝑦 / 2)) · (norm𝑥)))
5553, 54sylan 583 . . . . . . . . . . . . . . . . . . . 20 (((𝑦 / 2) ∈ ℝ+𝑥 ∈ ℋ) → (norm‘((𝑦 / 2) · 𝑥)) = ((abs‘(𝑦 / 2)) · (norm𝑥)))
56 rpre 12389 . . . . . . . . . . . . . . . . . . . . . . 23 ((𝑦 / 2) ∈ ℝ+ → (𝑦 / 2) ∈ ℝ)
57 rpge0 12394 . . . . . . . . . . . . . . . . . . . . . . 23 ((𝑦 / 2) ∈ ℝ+ → 0 ≤ (𝑦 / 2))
5856, 57absidd 14778 . . . . . . . . . . . . . . . . . . . . . 22 ((𝑦 / 2) ∈ ℝ+ → (abs‘(𝑦 / 2)) = (𝑦 / 2))
5958oveq1d 7154 . . . . . . . . . . . . . . . . . . . . 21 ((𝑦 / 2) ∈ ℝ+ → ((abs‘(𝑦 / 2)) · (norm𝑥)) = ((𝑦 / 2) · (norm𝑥)))
6059adantr 484 . . . . . . . . . . . . . . . . . . . 20 (((𝑦 / 2) ∈ ℝ+𝑥 ∈ ℋ) → ((abs‘(𝑦 / 2)) · (norm𝑥)) = ((𝑦 / 2) · (norm𝑥)))
6155, 60eqtr2d 2837 . . . . . . . . . . . . . . . . . . 19 (((𝑦 / 2) ∈ ℝ+𝑥 ∈ ℋ) → ((𝑦 / 2) · (norm𝑥)) = (norm‘((𝑦 / 2) · 𝑥)))
6250, 40, 61syl2anc 587 . . . . . . . . . . . . . . . . . 18 ((𝑦 ∈ ℝ+ ∧ (𝑥 ∈ ℋ ∧ (norm𝑥) ≤ 1)) → ((𝑦 / 2) · (norm𝑥)) = (norm‘((𝑦 / 2) · 𝑥)))
6339mulid1d 10651 . . . . . . . . . . . . . . . . . 18 ((𝑦 ∈ ℝ+ ∧ (𝑥 ∈ ℋ ∧ (norm𝑥) ≤ 1)) → ((𝑦 / 2) · 1) = (𝑦 / 2))
6452, 62, 633brtr3d 5064 . . . . . . . . . . . . . . . . 17 ((𝑦 ∈ ℝ+ ∧ (𝑥 ∈ ℋ ∧ (norm𝑥) ≤ 1)) → (norm‘((𝑦 / 2) · 𝑥)) ≤ (𝑦 / 2))
65 rphalflt 12410 . . . . . . . . . . . . . . . . . 18 (𝑦 ∈ ℝ+ → (𝑦 / 2) < 𝑦)
6665adantr 484 . . . . . . . . . . . . . . . . 17 ((𝑦 ∈ ℝ+ ∧ (𝑥 ∈ ℋ ∧ (norm𝑥) ≤ 1)) → (𝑦 / 2) < 𝑦)
6744, 38, 37, 64, 66lelttrd 10791 . . . . . . . . . . . . . . . 16 ((𝑦 ∈ ℝ+ ∧ (𝑥 ∈ ℋ ∧ (norm𝑥) ≤ 1)) → (norm‘((𝑦 / 2) · 𝑥)) < 𝑦)
68 fveq2 6649 . . . . . . . . . . . . . . . . . . . 20 (𝑧 = ((𝑦 / 2) · 𝑥) → (norm𝑧) = (norm‘((𝑦 / 2) · 𝑥)))
6968breq1d 5043 . . . . . . . . . . . . . . . . . . 19 (𝑧 = ((𝑦 / 2) · 𝑥) → ((norm𝑧) < 𝑦 ↔ (norm‘((𝑦 / 2) · 𝑥)) < 𝑦))
70 2fveq3 6654 . . . . . . . . . . . . . . . . . . . 20 (𝑧 = ((𝑦 / 2) · 𝑥) → (𝑁‘(𝑇𝑧)) = (𝑁‘(𝑇‘((𝑦 / 2) · 𝑥))))
7170breq1d 5043 . . . . . . . . . . . . . . . . . . 19 (𝑧 = ((𝑦 / 2) · 𝑥) → ((𝑁‘(𝑇𝑧)) < 1 ↔ (𝑁‘(𝑇‘((𝑦 / 2) · 𝑥))) < 1))
7269, 71imbi12d 348 . . . . . . . . . . . . . . . . . 18 (𝑧 = ((𝑦 / 2) · 𝑥) → (((norm𝑧) < 𝑦 → (𝑁‘(𝑇𝑧)) < 1) ↔ ((norm‘((𝑦 / 2) · 𝑥)) < 𝑦 → (𝑁‘(𝑇‘((𝑦 / 2) · 𝑥))) < 1)))
7372rspcv 3569 . . . . . . . . . . . . . . . . 17 (((𝑦 / 2) · 𝑥) ∈ ℋ → (∀𝑧 ∈ ℋ ((norm𝑧) < 𝑦 → (𝑁‘(𝑇𝑧)) < 1) → ((norm‘((𝑦 / 2) · 𝑥)) < 𝑦 → (𝑁‘(𝑇‘((𝑦 / 2) · 𝑥))) < 1)))
7442, 73syl 17 . . . . . . . . . . . . . . . 16 ((𝑦 ∈ ℝ+ ∧ (𝑥 ∈ ℋ ∧ (norm𝑥) ≤ 1)) → (∀𝑧 ∈ ℋ ((norm𝑧) < 𝑦 → (𝑁‘(𝑇𝑧)) < 1) → ((norm‘((𝑦 / 2) · 𝑥)) < 𝑦 → (𝑁‘(𝑇‘((𝑦 / 2) · 𝑥))) < 1)))
7567, 74mpid 44 . . . . . . . . . . . . . . 15 ((𝑦 ∈ ℝ+ ∧ (𝑥 ∈ ℋ ∧ (norm𝑥) ≤ 1)) → (∀𝑧 ∈ ℋ ((norm𝑧) < 𝑦 → (𝑁‘(𝑇𝑧)) < 1) → (𝑁‘(𝑇‘((𝑦 / 2) · 𝑥))) < 1))
762ad2antrl 727 . . . . . . . . . . . . . . . . . 18 ((𝑦 ∈ ℝ+ ∧ (𝑥 ∈ ℋ ∧ (norm𝑥) ≤ 1)) → (𝑁‘(𝑇𝑥)) ∈ ℝ)
7776, 48, 50ltmuldiv2d 12471 . . . . . . . . . . . . . . . . 17 ((𝑦 ∈ ℝ+ ∧ (𝑥 ∈ ℋ ∧ (norm𝑥) ≤ 1)) → (((𝑦 / 2) · (𝑁‘(𝑇𝑥))) < 1 ↔ (𝑁‘(𝑇𝑥)) < (1 / (𝑦 / 2))))
7850rprecred 12434 . . . . . . . . . . . . . . . . . 18 ((𝑦 ∈ ℝ+ ∧ (𝑥 ∈ ℋ ∧ (norm𝑥) ≤ 1)) → (1 / (𝑦 / 2)) ∈ ℝ)
79 ltle 10722 . . . . . . . . . . . . . . . . . 18 (((𝑁‘(𝑇𝑥)) ∈ ℝ ∧ (1 / (𝑦 / 2)) ∈ ℝ) → ((𝑁‘(𝑇𝑥)) < (1 / (𝑦 / 2)) → (𝑁‘(𝑇𝑥)) ≤ (1 / (𝑦 / 2))))
8076, 78, 79syl2anc 587 . . . . . . . . . . . . . . . . 17 ((𝑦 ∈ ℝ+ ∧ (𝑥 ∈ ℋ ∧ (norm𝑥) ≤ 1)) → ((𝑁‘(𝑇𝑥)) < (1 / (𝑦 / 2)) → (𝑁‘(𝑇𝑥)) ≤ (1 / (𝑦 / 2))))
8177, 80sylbid 243 . . . . . . . . . . . . . . . 16 ((𝑦 ∈ ℝ+ ∧ (𝑥 ∈ ℋ ∧ (norm𝑥) ≤ 1)) → (((𝑦 / 2) · (𝑁‘(𝑇𝑥))) < 1 → (𝑁‘(𝑇𝑥)) ≤ (1 / (𝑦 / 2))))
82 nmcex.5 . . . . . . . . . . . . . . . . . 18 (((𝑦 / 2) ∈ ℝ+𝑥 ∈ ℋ) → ((𝑦 / 2) · (𝑁‘(𝑇𝑥))) = (𝑁‘(𝑇‘((𝑦 / 2) · 𝑥))))
8350, 40, 82syl2anc 587 . . . . . . . . . . . . . . . . 17 ((𝑦 ∈ ℝ+ ∧ (𝑥 ∈ ℋ ∧ (norm𝑥) ≤ 1)) → ((𝑦 / 2) · (𝑁‘(𝑇𝑥))) = (𝑁‘(𝑇‘((𝑦 / 2) · 𝑥))))
8483breq1d 5043 . . . . . . . . . . . . . . . 16 ((𝑦 ∈ ℝ+ ∧ (𝑥 ∈ ℋ ∧ (norm𝑥) ≤ 1)) → (((𝑦 / 2) · (𝑁‘(𝑇𝑥))) < 1 ↔ (𝑁‘(𝑇‘((𝑦 / 2) · 𝑥))) < 1))
85 rpcn 12391 . . . . . . . . . . . . . . . . . . 19 (𝑦 ∈ ℝ+𝑦 ∈ ℂ)
86 rpne0 12397 . . . . . . . . . . . . . . . . . . 19 (𝑦 ∈ ℝ+𝑦 ≠ 0)
87 2cn 11704 . . . . . . . . . . . . . . . . . . . 20 2 ∈ ℂ
88 2ne0 11733 . . . . . . . . . . . . . . . . . . . 20 2 ≠ 0
89 recdiv 11339 . . . . . . . . . . . . . . . . . . . 20 (((𝑦 ∈ ℂ ∧ 𝑦 ≠ 0) ∧ (2 ∈ ℂ ∧ 2 ≠ 0)) → (1 / (𝑦 / 2)) = (2 / 𝑦))
9087, 88, 89mpanr12 704 . . . . . . . . . . . . . . . . . . 19 ((𝑦 ∈ ℂ ∧ 𝑦 ≠ 0) → (1 / (𝑦 / 2)) = (2 / 𝑦))
9185, 86, 90syl2anc 587 . . . . . . . . . . . . . . . . . 18 (𝑦 ∈ ℝ+ → (1 / (𝑦 / 2)) = (2 / 𝑦))
9291adantr 484 . . . . . . . . . . . . . . . . 17 ((𝑦 ∈ ℝ+ ∧ (𝑥 ∈ ℋ ∧ (norm𝑥) ≤ 1)) → (1 / (𝑦 / 2)) = (2 / 𝑦))
9392breq2d 5045 . . . . . . . . . . . . . . . 16 ((𝑦 ∈ ℝ+ ∧ (𝑥 ∈ ℋ ∧ (norm𝑥) ≤ 1)) → ((𝑁‘(𝑇𝑥)) ≤ (1 / (𝑦 / 2)) ↔ (𝑁‘(𝑇𝑥)) ≤ (2 / 𝑦)))
9481, 84, 933imtr3d 296 . . . . . . . . . . . . . . 15 ((𝑦 ∈ ℝ+ ∧ (𝑥 ∈ ℋ ∧ (norm𝑥) ≤ 1)) → ((𝑁‘(𝑇‘((𝑦 / 2) · 𝑥))) < 1 → (𝑁‘(𝑇𝑥)) ≤ (2 / 𝑦)))
9575, 94syld 47 . . . . . . . . . . . . . 14 ((𝑦 ∈ ℝ+ ∧ (𝑥 ∈ ℋ ∧ (norm𝑥) ≤ 1)) → (∀𝑧 ∈ ℋ ((norm𝑧) < 𝑦 → (𝑁‘(𝑇𝑧)) < 1) → (𝑁‘(𝑇𝑥)) ≤ (2 / 𝑦)))
9695imp 410 . . . . . . . . . . . . 13 (((𝑦 ∈ ℝ+ ∧ (𝑥 ∈ ℋ ∧ (norm𝑥) ≤ 1)) ∧ ∀𝑧 ∈ ℋ ((norm𝑧) < 𝑦 → (𝑁‘(𝑇𝑧)) < 1)) → (𝑁‘(𝑇𝑥)) ≤ (2 / 𝑦))
9796an32s 651 . . . . . . . . . . . 12 (((𝑦 ∈ ℝ+ ∧ ∀𝑧 ∈ ℋ ((norm𝑧) < 𝑦 → (𝑁‘(𝑇𝑧)) < 1)) ∧ (𝑥 ∈ ℋ ∧ (norm𝑥) ≤ 1)) → (𝑁‘(𝑇𝑥)) ≤ (2 / 𝑦))
9897anassrs 471 . . . . . . . . . . 11 ((((𝑦 ∈ ℝ+ ∧ ∀𝑧 ∈ ℋ ((norm𝑧) < 𝑦 → (𝑁‘(𝑇𝑧)) < 1)) ∧ 𝑥 ∈ ℋ) ∧ (norm𝑥) ≤ 1) → (𝑁‘(𝑇𝑥)) ≤ (2 / 𝑦))
99 breq1 5036 . . . . . . . . . . 11 (𝑛 = (𝑁‘(𝑇𝑥)) → (𝑛 ≤ (2 / 𝑦) ↔ (𝑁‘(𝑇𝑥)) ≤ (2 / 𝑦)))
10098, 99syl5ibrcom 250 . . . . . . . . . 10 ((((𝑦 ∈ ℝ+ ∧ ∀𝑧 ∈ ℋ ((norm𝑧) < 𝑦 → (𝑁‘(𝑇𝑧)) < 1)) ∧ 𝑥 ∈ ℋ) ∧ (norm𝑥) ≤ 1) → (𝑛 = (𝑁‘(𝑇𝑥)) → 𝑛 ≤ (2 / 𝑦)))
101100expimpd 457 . . . . . . . . 9 (((𝑦 ∈ ℝ+ ∧ ∀𝑧 ∈ ℋ ((norm𝑧) < 𝑦 → (𝑁‘(𝑇𝑧)) < 1)) ∧ 𝑥 ∈ ℋ) → (((norm𝑥) ≤ 1 ∧ 𝑛 = (𝑁‘(𝑇𝑥))) → 𝑛 ≤ (2 / 𝑦)))
102101rexlimdva 3246 . . . . . . . 8 ((𝑦 ∈ ℝ+ ∧ ∀𝑧 ∈ ℋ ((norm𝑧) < 𝑦 → (𝑁‘(𝑇𝑧)) < 1)) → (∃𝑥 ∈ ℋ ((norm𝑥) ≤ 1 ∧ 𝑛 = (𝑁‘(𝑇𝑥))) → 𝑛 ≤ (2 / 𝑦)))
103102alrimiv 1928 . . . . . . 7 ((𝑦 ∈ ℝ+ ∧ ∀𝑧 ∈ ℋ ((norm𝑧) < 𝑦 → (𝑁‘(𝑇𝑧)) < 1)) → ∀𝑛(∃𝑥 ∈ ℋ ((norm𝑥) ≤ 1 ∧ 𝑛 = (𝑁‘(𝑇𝑥))) → 𝑛 ≤ (2 / 𝑦)))
104 eqeq1 2805 . . . . . . . . . . . 12 (𝑚 = 𝑛 → (𝑚 = (𝑁‘(𝑇𝑥)) ↔ 𝑛 = (𝑁‘(𝑇𝑥))))
105104anbi2d 631 . . . . . . . . . . 11 (𝑚 = 𝑛 → (((norm𝑥) ≤ 1 ∧ 𝑚 = (𝑁‘(𝑇𝑥))) ↔ ((norm𝑥) ≤ 1 ∧ 𝑛 = (𝑁‘(𝑇𝑥)))))
106105rexbidv 3259 . . . . . . . . . 10 (𝑚 = 𝑛 → (∃𝑥 ∈ ℋ ((norm𝑥) ≤ 1 ∧ 𝑚 = (𝑁‘(𝑇𝑥))) ↔ ∃𝑥 ∈ ℋ ((norm𝑥) ≤ 1 ∧ 𝑛 = (𝑁‘(𝑇𝑥)))))
107106ralab 3635 . . . . . . . . 9 (∀𝑛 ∈ {𝑚 ∣ ∃𝑥 ∈ ℋ ((norm𝑥) ≤ 1 ∧ 𝑚 = (𝑁‘(𝑇𝑥)))}𝑛𝑧 ↔ ∀𝑛(∃𝑥 ∈ ℋ ((norm𝑥) ≤ 1 ∧ 𝑛 = (𝑁‘(𝑇𝑥))) → 𝑛𝑧))
108 breq2 5037 . . . . . . . . . . 11 (𝑧 = (2 / 𝑦) → (𝑛𝑧𝑛 ≤ (2 / 𝑦)))
109108imbi2d 344 . . . . . . . . . 10 (𝑧 = (2 / 𝑦) → ((∃𝑥 ∈ ℋ ((norm𝑥) ≤ 1 ∧ 𝑛 = (𝑁‘(𝑇𝑥))) → 𝑛𝑧) ↔ (∃𝑥 ∈ ℋ ((norm𝑥) ≤ 1 ∧ 𝑛 = (𝑁‘(𝑇𝑥))) → 𝑛 ≤ (2 / 𝑦))))
110109albidv 1921 . . . . . . . . 9 (𝑧 = (2 / 𝑦) → (∀𝑛(∃𝑥 ∈ ℋ ((norm𝑥) ≤ 1 ∧ 𝑛 = (𝑁‘(𝑇𝑥))) → 𝑛𝑧) ↔ ∀𝑛(∃𝑥 ∈ ℋ ((norm𝑥) ≤ 1 ∧ 𝑛 = (𝑁‘(𝑇𝑥))) → 𝑛 ≤ (2 / 𝑦))))
111107, 110syl5bb 286 . . . . . . . 8 (𝑧 = (2 / 𝑦) → (∀𝑛 ∈ {𝑚 ∣ ∃𝑥 ∈ ℋ ((norm𝑥) ≤ 1 ∧ 𝑚 = (𝑁‘(𝑇𝑥)))}𝑛𝑧 ↔ ∀𝑛(∃𝑥 ∈ ℋ ((norm𝑥) ≤ 1 ∧ 𝑛 = (𝑁‘(𝑇𝑥))) → 𝑛 ≤ (2 / 𝑦))))
112111rspcev 3574 . . . . . . 7 (((2 / 𝑦) ∈ ℝ ∧ ∀𝑛(∃𝑥 ∈ ℋ ((norm𝑥) ≤ 1 ∧ 𝑛 = (𝑁‘(𝑇𝑥))) → 𝑛 ≤ (2 / 𝑦))) → ∃𝑧 ∈ ℝ ∀𝑛 ∈ {𝑚 ∣ ∃𝑥 ∈ ℋ ((norm𝑥) ≤ 1 ∧ 𝑚 = (𝑁‘(𝑇𝑥)))}𝑛𝑧)
11335, 103, 112syl2anc 587 . . . . . 6 ((𝑦 ∈ ℝ+ ∧ ∀𝑧 ∈ ℋ ((norm𝑧) < 𝑦 → (𝑁‘(𝑇𝑧)) < 1)) → ∃𝑧 ∈ ℝ ∀𝑛 ∈ {𝑚 ∣ ∃𝑥 ∈ ℋ ((norm𝑥) ≤ 1 ∧ 𝑚 = (𝑁‘(𝑇𝑥)))}𝑛𝑧)
114113rexlimiva 3243 . . . . 5 (∃𝑦 ∈ ℝ+𝑧 ∈ ℋ ((norm𝑧) < 𝑦 → (𝑁‘(𝑇𝑧)) < 1) → ∃𝑧 ∈ ℝ ∀𝑛 ∈ {𝑚 ∣ ∃𝑥 ∈ ℋ ((norm𝑥) ≤ 1 ∧ 𝑚 = (𝑁‘(𝑇𝑥)))}𝑛𝑧)
11530, 114ax-mp 5 . . . 4 𝑧 ∈ ℝ ∀𝑛 ∈ {𝑚 ∣ ∃𝑥 ∈ ℋ ((norm𝑥) ≤ 1 ∧ 𝑚 = (𝑁‘(𝑇𝑥)))}𝑛𝑧
116 supxrre 12712 . . . 4 (({𝑚 ∣ ∃𝑥 ∈ ℋ ((norm𝑥) ≤ 1 ∧ 𝑚 = (𝑁‘(𝑇𝑥)))} ⊆ ℝ ∧ {𝑚 ∣ ∃𝑥 ∈ ℋ ((norm𝑥) ≤ 1 ∧ 𝑚 = (𝑁‘(𝑇𝑥)))} ≠ ∅ ∧ ∃𝑧 ∈ ℝ ∀𝑛 ∈ {𝑚 ∣ ∃𝑥 ∈ ℋ ((norm𝑥) ≤ 1 ∧ 𝑚 = (𝑁‘(𝑇𝑥)))}𝑛𝑧) → sup({𝑚 ∣ ∃𝑥 ∈ ℋ ((norm𝑥) ≤ 1 ∧ 𝑚 = (𝑁‘(𝑇𝑥)))}, ℝ*, < ) = sup({𝑚 ∣ ∃𝑥 ∈ ℋ ((norm𝑥) ≤ 1 ∧ 𝑚 = (𝑁‘(𝑇𝑥)))}, ℝ, < ))
1178, 29, 115, 116mp3an 1458 . . 3 sup({𝑚 ∣ ∃𝑥 ∈ ℋ ((norm𝑥) ≤ 1 ∧ 𝑚 = (𝑁‘(𝑇𝑥)))}, ℝ*, < ) = sup({𝑚 ∣ ∃𝑥 ∈ ℋ ((norm𝑥) ≤ 1 ∧ 𝑚 = (𝑁‘(𝑇𝑥)))}, ℝ, < )
1181, 117eqtri 2824 . 2 (𝑆𝑇) = sup({𝑚 ∣ ∃𝑥 ∈ ℋ ((norm𝑥) ≤ 1 ∧ 𝑚 = (𝑁‘(𝑇𝑥)))}, ℝ, < )
119 suprcl 11592 . . 3 (({𝑚 ∣ ∃𝑥 ∈ ℋ ((norm𝑥) ≤ 1 ∧ 𝑚 = (𝑁‘(𝑇𝑥)))} ⊆ ℝ ∧ {𝑚 ∣ ∃𝑥 ∈ ℋ ((norm𝑥) ≤ 1 ∧ 𝑚 = (𝑁‘(𝑇𝑥)))} ≠ ∅ ∧ ∃𝑧 ∈ ℝ ∀𝑛 ∈ {𝑚 ∣ ∃𝑥 ∈ ℋ ((norm𝑥) ≤ 1 ∧ 𝑚 = (𝑁‘(𝑇𝑥)))}𝑛𝑧) → sup({𝑚 ∣ ∃𝑥 ∈ ℋ ((norm𝑥) ≤ 1 ∧ 𝑚 = (𝑁‘(𝑇𝑥)))}, ℝ, < ) ∈ ℝ)
1208, 29, 115, 119mp3an 1458 . 2 sup({𝑚 ∣ ∃𝑥 ∈ ℋ ((norm𝑥) ≤ 1 ∧ 𝑚 = (𝑁‘(𝑇𝑥)))}, ℝ, < ) ∈ ℝ
121118, 120eqeltri 2889 1 (𝑆𝑇) ∈ ℝ
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 399  wal 1536   = wceq 1538  wcel 2112  {cab 2779  wne 2990  wral 3109  wrex 3110  wss 3884  c0 4246   class class class wbr 5033  cfv 6328  (class class class)co 7139  supcsup 8892  cc 10528  cr 10529  0cc0 10530  1c1 10531   · cmul 10535  *cxr 10667   < clt 10668  cle 10669   / cdiv 11290  2c2 11684  +crp 12381  abscabs 14589  chba 28706   · csm 28708  normcno 28710  0c0v 28711
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 1911  ax-6 1970  ax-7 2015  ax-8 2114  ax-9 2122  ax-10 2143  ax-11 2159  ax-12 2176  ax-ext 2773  ax-sep 5170  ax-nul 5177  ax-pow 5234  ax-pr 5298  ax-un 7445  ax-cnex 10586  ax-resscn 10587  ax-1cn 10588  ax-icn 10589  ax-addcl 10590  ax-addrcl 10591  ax-mulcl 10592  ax-mulrcl 10593  ax-mulcom 10594  ax-addass 10595  ax-mulass 10596  ax-distr 10597  ax-i2m1 10598  ax-1ne0 10599  ax-1rid 10600  ax-rnegex 10601  ax-rrecex 10602  ax-cnre 10603  ax-pre-lttri 10604  ax-pre-lttrn 10605  ax-pre-ltadd 10606  ax-pre-mulgt0 10607  ax-pre-sup 10608  ax-hv0cl 28790  ax-hfvmul 28792  ax-hvmul0 28797  ax-hfi 28866  ax-his1 28869  ax-his3 28871  ax-his4 28872
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 2070  df-mo 2601  df-eu 2632  df-clab 2780  df-cleq 2794  df-clel 2873  df-nfc 2941  df-ne 2991  df-nel 3095  df-ral 3114  df-rex 3115  df-reu 3116  df-rmo 3117  df-rab 3118  df-v 3446  df-sbc 3724  df-csb 3832  df-dif 3887  df-un 3889  df-in 3891  df-ss 3901  df-pss 3903  df-nul 4247  df-if 4429  df-pw 4502  df-sn 4529  df-pr 4531  df-tp 4533  df-op 4535  df-uni 4804  df-iun 4886  df-br 5034  df-opab 5096  df-mpt 5114  df-tr 5140  df-id 5428  df-eprel 5433  df-po 5442  df-so 5443  df-fr 5482  df-we 5484  df-xp 5529  df-rel 5530  df-cnv 5531  df-co 5532  df-dm 5533  df-rn 5534  df-res 5535  df-ima 5536  df-pred 6120  df-ord 6166  df-on 6167  df-lim 6168  df-suc 6169  df-iota 6287  df-fun 6330  df-fn 6331  df-f 6332  df-f1 6333  df-fo 6334  df-f1o 6335  df-fv 6336  df-riota 7097  df-ov 7142  df-oprab 7143  df-mpo 7144  df-om 7565  df-2nd 7676  df-wrecs 7934  df-recs 7995  df-rdg 8033  df-er 8276  df-en 8497  df-dom 8498  df-sdom 8499  df-sup 8894  df-pnf 10670  df-mnf 10671  df-xr 10672  df-ltxr 10673  df-le 10674  df-sub 10865  df-neg 10866  df-div 11291  df-nn 11630  df-2 11692  df-3 11693  df-n0 11890  df-z 11974  df-uz 12236  df-rp 12382  df-seq 13369  df-exp 13430  df-cj 14454  df-re 14455  df-im 14456  df-sqrt 14590  df-abs 14591  df-hnorm 28755
This theorem is referenced by:  nmcopexi  29814  nmcfnexi  29838
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