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Theorem nmounbi 28559

Description: Two ways two express that an operator is unbounded. (Contributed by NM, 11-Jan-2008.) (New usage is discouraged.)

**Hypotheses**
Ref	Expression
nmoubi.1	⊢ 𝑋 = (BaseSet‘𝑈)
nmoubi.y	⊢ 𝑌 = (BaseSet‘𝑊)
nmoubi.l	⊢ 𝐿 = (norm_CV‘𝑈)
nmoubi.m	⊢ 𝑀 = (norm_CV‘𝑊)
nmoubi.3	⊢ 𝑁 = (𝑈 normOp_OLD 𝑊)
nmoubi.u	⊢ 𝑈 ∈ NrmCVec
nmoubi.w	⊢ 𝑊 ∈ NrmCVec

**Assertion**
Ref	Expression
nmounbi	⊢ (𝑇:𝑋⟶𝑌 → ((𝑁‘𝑇) = +∞ ↔ ∀𝑟 ∈ ℝ ∃𝑦 ∈ 𝑋 ((𝐿‘𝑦) ≤ 1 ∧ 𝑟 < (𝑀‘(𝑇‘𝑦)))))

Distinct variable groups: 𝑦,𝑟,𝐿 𝑦,𝑈 𝑦,𝑊 𝑌,𝑟,𝑦 𝑀,𝑟,𝑦 𝑇,𝑟,𝑦 𝑋,𝑟,𝑦 𝑁,𝑟,𝑦 Allowed substitution hints: 𝑈(𝑟) 𝑊(𝑟)

**Proof of Theorem nmounbi**
Step	Hyp	Ref	Expression
1		nmoubi.1	. . . 4 ⊢ 𝑋 = (BaseSet‘𝑈)
2		nmoubi.y	. . . 4 ⊢ 𝑌 = (BaseSet‘𝑊)
3		nmoubi.l	. . . 4 ⊢ 𝐿 = (norm_CV‘𝑈)
4		nmoubi.m	. . . 4 ⊢ 𝑀 = (norm_CV‘𝑊)
5		nmoubi.3	. . . 4 ⊢ 𝑁 = (𝑈 normOp_OLD 𝑊)
6		nmoubi.u	. . . 4 ⊢ 𝑈 ∈ NrmCVec
7		nmoubi.w	. . . 4 ⊢ 𝑊 ∈ NrmCVec
8	1, 2, 3, 4, 5, 6, 7	nmobndi 28558	. . 3 ⊢ (𝑇:𝑋⟶𝑌 → ((𝑁‘𝑇) ∈ ℝ ↔ ∃𝑟 ∈ ℝ ∀𝑦 ∈ 𝑋 ((𝐿‘𝑦) ≤ 1 → (𝑀‘(𝑇‘𝑦)) ≤ 𝑟)))
9	1, 2, 5	nmorepnf 28551	. . . 4 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ NrmCVec ∧ 𝑇:𝑋⟶𝑌) → ((𝑁‘𝑇) ∈ ℝ ↔ (𝑁‘𝑇) ≠ +∞))
10	6, 7, 9	mp3an12 1448	. . 3 ⊢ (𝑇:𝑋⟶𝑌 → ((𝑁‘𝑇) ∈ ℝ ↔ (𝑁‘𝑇) ≠ +∞))
11		ffvelrn 6826	. . . . . . . . . . . 12 ⊢ ((𝑇:𝑋⟶𝑌 ∧ 𝑦 ∈ 𝑋) → (𝑇‘𝑦) ∈ 𝑌)
12	2, 4	nvcl 28444	. . . . . . . . . . . 12 ⊢ ((𝑊 ∈ NrmCVec ∧ (𝑇‘𝑦) ∈ 𝑌) → (𝑀‘(𝑇‘𝑦)) ∈ ℝ)
13	7, 11, 12	sylancr 590	. . . . . . . . . . 11 ⊢ ((𝑇:𝑋⟶𝑌 ∧ 𝑦 ∈ 𝑋) → (𝑀‘(𝑇‘𝑦)) ∈ ℝ)
14		lenlt 10708	. . . . . . . . . . 11 ⊢ (((𝑀‘(𝑇‘𝑦)) ∈ ℝ ∧ 𝑟 ∈ ℝ) → ((𝑀‘(𝑇‘𝑦)) ≤ 𝑟 ↔ ¬ 𝑟 < (𝑀‘(𝑇‘𝑦))))
15	13, 14	sylan 583	. . . . . . . . . 10 ⊢ (((𝑇:𝑋⟶𝑌 ∧ 𝑦 ∈ 𝑋) ∧ 𝑟 ∈ ℝ) → ((𝑀‘(𝑇‘𝑦)) ≤ 𝑟 ↔ ¬ 𝑟 < (𝑀‘(𝑇‘𝑦))))
16	15	an32s 651	. . . . . . . . 9 ⊢ (((𝑇:𝑋⟶𝑌 ∧ 𝑟 ∈ ℝ) ∧ 𝑦 ∈ 𝑋) → ((𝑀‘(𝑇‘𝑦)) ≤ 𝑟 ↔ ¬ 𝑟 < (𝑀‘(𝑇‘𝑦))))
17	16	imbi2d 344	. . . . . . . 8 ⊢ (((𝑇:𝑋⟶𝑌 ∧ 𝑟 ∈ ℝ) ∧ 𝑦 ∈ 𝑋) → (((𝐿‘𝑦) ≤ 1 → (𝑀‘(𝑇‘𝑦)) ≤ 𝑟) ↔ ((𝐿‘𝑦) ≤ 1 → ¬ 𝑟 < (𝑀‘(𝑇‘𝑦)))))
18		imnan 403	. . . . . . . 8 ⊢ (((𝐿‘𝑦) ≤ 1 → ¬ 𝑟 < (𝑀‘(𝑇‘𝑦))) ↔ ¬ ((𝐿‘𝑦) ≤ 1 ∧ 𝑟 < (𝑀‘(𝑇‘𝑦))))
19	17, 18	syl6bb 290	. . . . . . 7 ⊢ (((𝑇:𝑋⟶𝑌 ∧ 𝑟 ∈ ℝ) ∧ 𝑦 ∈ 𝑋) → (((𝐿‘𝑦) ≤ 1 → (𝑀‘(𝑇‘𝑦)) ≤ 𝑟) ↔ ¬ ((𝐿‘𝑦) ≤ 1 ∧ 𝑟 < (𝑀‘(𝑇‘𝑦)))))
20	19	ralbidva 3161	. . . . . 6 ⊢ ((𝑇:𝑋⟶𝑌 ∧ 𝑟 ∈ ℝ) → (∀𝑦 ∈ 𝑋 ((𝐿‘𝑦) ≤ 1 → (𝑀‘(𝑇‘𝑦)) ≤ 𝑟) ↔ ∀𝑦 ∈ 𝑋 ¬ ((𝐿‘𝑦) ≤ 1 ∧ 𝑟 < (𝑀‘(𝑇‘𝑦)))))
21		ralnex 3199	. . . . . 6 ⊢ (∀𝑦 ∈ 𝑋 ¬ ((𝐿‘𝑦) ≤ 1 ∧ 𝑟 < (𝑀‘(𝑇‘𝑦))) ↔ ¬ ∃𝑦 ∈ 𝑋 ((𝐿‘𝑦) ≤ 1 ∧ 𝑟 < (𝑀‘(𝑇‘𝑦))))
22	20, 21	syl6bb 290	. . . . 5 ⊢ ((𝑇:𝑋⟶𝑌 ∧ 𝑟 ∈ ℝ) → (∀𝑦 ∈ 𝑋 ((𝐿‘𝑦) ≤ 1 → (𝑀‘(𝑇‘𝑦)) ≤ 𝑟) ↔ ¬ ∃𝑦 ∈ 𝑋 ((𝐿‘𝑦) ≤ 1 ∧ 𝑟 < (𝑀‘(𝑇‘𝑦)))))
23	22	rexbidva 3255	. . . 4 ⊢ (𝑇:𝑋⟶𝑌 → (∃𝑟 ∈ ℝ ∀𝑦 ∈ 𝑋 ((𝐿‘𝑦) ≤ 1 → (𝑀‘(𝑇‘𝑦)) ≤ 𝑟) ↔ ∃𝑟 ∈ ℝ ¬ ∃𝑦 ∈ 𝑋 ((𝐿‘𝑦) ≤ 1 ∧ 𝑟 < (𝑀‘(𝑇‘𝑦)))))
24		rexnal 3201	. . . 4 ⊢ (∃𝑟 ∈ ℝ ¬ ∃𝑦 ∈ 𝑋 ((𝐿‘𝑦) ≤ 1 ∧ 𝑟 < (𝑀‘(𝑇‘𝑦))) ↔ ¬ ∀𝑟 ∈ ℝ ∃𝑦 ∈ 𝑋 ((𝐿‘𝑦) ≤ 1 ∧ 𝑟 < (𝑀‘(𝑇‘𝑦))))
25	23, 24	syl6bb 290	. . 3 ⊢ (𝑇:𝑋⟶𝑌 → (∃𝑟 ∈ ℝ ∀𝑦 ∈ 𝑋 ((𝐿‘𝑦) ≤ 1 → (𝑀‘(𝑇‘𝑦)) ≤ 𝑟) ↔ ¬ ∀𝑟 ∈ ℝ ∃𝑦 ∈ 𝑋 ((𝐿‘𝑦) ≤ 1 ∧ 𝑟 < (𝑀‘(𝑇‘𝑦)))))
26	8, 10, 25	3bitr3d 312	. 2 ⊢ (𝑇:𝑋⟶𝑌 → ((𝑁‘𝑇) ≠ +∞ ↔ ¬ ∀𝑟 ∈ ℝ ∃𝑦 ∈ 𝑋 ((𝐿‘𝑦) ≤ 1 ∧ 𝑟 < (𝑀‘(𝑇‘𝑦)))))
27	26	necon4abid 3027	1 ⊢ (𝑇:𝑋⟶𝑌 → ((𝑁‘𝑇) = +∞ ↔ ∀𝑟 ∈ ℝ ∃𝑦 ∈ 𝑋 ((𝐿‘𝑦) ≤ 1 ∧ 𝑟 < (𝑀‘(𝑇‘𝑦)))))

Colors of variables: wff setvar class

Syntax hints: ¬ wn 3 → wi 4 ↔ wb 209 ∧ wa 399 = wceq 1538 ∈ wcel 2111 ≠ wne 2987 ∀wral 3106 ∃wrex 3107 class class class wbr 5030 ⟶wf 6320 ‘cfv 6324 (class class class)co 7135 ℝcr 10525 1c1 10527 +∞cpnf 10661 < clt 10664 ≤ cle 10665 NrmCVeccnv 28367 BaseSetcba 28369 norm_CVcnmcv 28373 normOp_OLD cnmoo 28524

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 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2770 ax-rep 5154 ax-sep 5167 ax-nul 5174 ax-pow 5231 ax-pr 5295 ax-un 7441 ax-cnex 10582 ax-resscn 10583 ax-1cn 10584 ax-icn 10585 ax-addcl 10586 ax-addrcl 10587 ax-mulcl 10588 ax-mulrcl 10589 ax-mulcom 10590 ax-addass 10591 ax-mulass 10592 ax-distr 10593 ax-i2m1 10594 ax-1ne0 10595 ax-1rid 10596 ax-rnegex 10597 ax-rrecex 10598 ax-cnre 10599 ax-pre-lttri 10600 ax-pre-lttrn 10601 ax-pre-ltadd 10602 ax-pre-mulgt0 10603 ax-pre-sup 10604

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 2598 df-eu 2629 df-clab 2777 df-cleq 2791 df-clel 2870 df-nfc 2938 df-ne 2988 df-nel 3092 df-ral 3111 df-rex 3112 df-reu 3113 df-rmo 3114 df-rab 3115 df-v 3443 df-sbc 3721 df-csb 3829 df-dif 3884 df-un 3886 df-in 3888 df-ss 3898 df-pss 3900 df-nul 4244 df-if 4426 df-pw 4499 df-sn 4526 df-pr 4528 df-tp 4530 df-op 4532 df-uni 4801 df-iun 4883 df-br 5031 df-opab 5093 df-mpt 5111 df-tr 5137 df-id 5425 df-eprel 5430 df-po 5438 df-so 5439 df-fr 5478 df-we 5480 df-xp 5525 df-rel 5526 df-cnv 5527 df-co 5528 df-dm 5529 df-rn 5530 df-res 5531 df-ima 5532 df-pred 6116 df-ord 6162 df-on 6163 df-lim 6164 df-suc 6165 df-iota 6283 df-fun 6326 df-fn 6327 df-f 6328 df-f1 6329 df-fo 6330 df-f1o 6331 df-fv 6332 df-riota 7093 df-ov 7138 df-oprab 7139 df-mpo 7140 df-om 7561 df-1st 7671 df-2nd 7672 df-wrecs 7930 df-recs 7991 df-rdg 8029 df-er 8272 df-map 8391 df-en 8493 df-dom 8494 df-sdom 8495 df-sup 8890 df-pnf 10666 df-mnf 10667 df-xr 10668 df-ltxr 10669 df-le 10670 df-sub 10861 df-neg 10862 df-div 11287 df-nn 11626 df-2 11688 df-3 11689 df-n0 11886 df-z 11970 df-uz 12232 df-rp 12378 df-seq 13365 df-exp 13426 df-cj 14450 df-re 14451 df-im 14452 df-sqrt 14586 df-abs 14587 df-grpo 28276 df-gid 28277 df-ginv 28278 df-ablo 28328 df-vc 28342 df-nv 28375 df-va 28378 df-ba 28379 df-sm 28380 df-0v 28381 df-nmcv 28383 df-nmoo 28528

This theorem is referenced by: nmounbseqi 28560 nmounbseqiALT 28561

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