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| Mirrors > Home > HSE Home > Th. List > nmopre | Structured version Visualization version GIF version | ||
| Description: The norm of a bounded operator is a real number. (Contributed by NM, 29-Jan-2006.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| nmopre | ⊢ (𝑇 ∈ BndLinOp → (normop‘𝑇) ∈ ℝ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | bdopf 31881 | . . 3 ⊢ (𝑇 ∈ BndLinOp → 𝑇: ℋ⟶ ℋ) | |
| 2 | nmopgtmnf 31887 | . . 3 ⊢ (𝑇: ℋ⟶ ℋ → -∞ < (normop‘𝑇)) | |
| 3 | 1, 2 | syl 17 | . 2 ⊢ (𝑇 ∈ BndLinOp → -∞ < (normop‘𝑇)) |
| 4 | elbdop 31879 | . . 3 ⊢ (𝑇 ∈ BndLinOp ↔ (𝑇 ∈ LinOp ∧ (normop‘𝑇) < +∞)) | |
| 5 | 4 | simprbi 496 | . 2 ⊢ (𝑇 ∈ BndLinOp → (normop‘𝑇) < +∞) |
| 6 | nmopxr 31885 | . . 3 ⊢ (𝑇: ℋ⟶ ℋ → (normop‘𝑇) ∈ ℝ*) | |
| 7 | xrrebnd 13210 | . . 3 ⊢ ((normop‘𝑇) ∈ ℝ* → ((normop‘𝑇) ∈ ℝ ↔ (-∞ < (normop‘𝑇) ∧ (normop‘𝑇) < +∞))) | |
| 8 | 1, 6, 7 | 3syl 18 | . 2 ⊢ (𝑇 ∈ BndLinOp → ((normop‘𝑇) ∈ ℝ ↔ (-∞ < (normop‘𝑇) ∧ (normop‘𝑇) < +∞))) |
| 9 | 3, 5, 8 | mpbir2and 713 | 1 ⊢ (𝑇 ∈ BndLinOp → (normop‘𝑇) ∈ ℝ) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 ∈ wcel 2108 class class class wbr 5143 ⟶wf 6557 ‘cfv 6561 ℝcr 11154 +∞cpnf 11292 -∞cmnf 11293 ℝ*cxr 11294 < clt 11295 ℋchba 30938 normopcnop 30964 LinOpclo 30966 BndLinOpcbo 30967 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2007 ax-8 2110 ax-9 2118 ax-10 2141 ax-11 2157 ax-12 2177 ax-ext 2708 ax-rep 5279 ax-sep 5296 ax-nul 5306 ax-pow 5365 ax-pr 5432 ax-un 7755 ax-cnex 11211 ax-resscn 11212 ax-1cn 11213 ax-icn 11214 ax-addcl 11215 ax-addrcl 11216 ax-mulcl 11217 ax-mulrcl 11218 ax-mulcom 11219 ax-addass 11220 ax-mulass 11221 ax-distr 11222 ax-i2m1 11223 ax-1ne0 11224 ax-1rid 11225 ax-rnegex 11226 ax-rrecex 11227 ax-cnre 11228 ax-pre-lttri 11229 ax-pre-lttrn 11230 ax-pre-ltadd 11231 ax-pre-mulgt0 11232 ax-pre-sup 11233 ax-hilex 31018 ax-hfvadd 31019 ax-hvcom 31020 ax-hvass 31021 ax-hv0cl 31022 ax-hvaddid 31023 ax-hfvmul 31024 ax-hvmulid 31025 ax-hvmulass 31026 ax-hvdistr1 31027 ax-hvdistr2 31028 ax-hvmul0 31029 ax-hfi 31098 ax-his1 31101 ax-his2 31102 ax-his3 31103 ax-his4 31104 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2065 df-mo 2540 df-eu 2569 df-clab 2715 df-cleq 2729 df-clel 2816 df-nfc 2892 df-ne 2941 df-nel 3047 df-ral 3062 df-rex 3071 df-rmo 3380 df-reu 3381 df-rab 3437 df-v 3482 df-sbc 3789 df-csb 3900 df-dif 3954 df-un 3956 df-in 3958 df-ss 3968 df-pss 3971 df-nul 4334 df-if 4526 df-pw 4602 df-sn 4627 df-pr 4629 df-op 4633 df-uni 4908 df-iun 4993 df-br 5144 df-opab 5206 df-mpt 5226 df-tr 5260 df-id 5578 df-eprel 5584 df-po 5592 df-so 5593 df-fr 5637 df-we 5639 df-xp 5691 df-rel 5692 df-cnv 5693 df-co 5694 df-dm 5695 df-rn 5696 df-res 5697 df-ima 5698 df-pred 6321 df-ord 6387 df-on 6388 df-lim 6389 df-suc 6390 df-iota 6514 df-fun 6563 df-fn 6564 df-f 6565 df-f1 6566 df-fo 6567 df-f1o 6568 df-fv 6569 df-riota 7388 df-ov 7434 df-oprab 7435 df-mpo 7436 df-om 7888 df-1st 8014 df-2nd 8015 df-frecs 8306 df-wrecs 8337 df-recs 8411 df-rdg 8450 df-er 8745 df-map 8868 df-en 8986 df-dom 8987 df-sdom 8988 df-sup 9482 df-pnf 11297 df-mnf 11298 df-xr 11299 df-ltxr 11300 df-le 11301 df-sub 11494 df-neg 11495 df-div 11921 df-nn 12267 df-2 12329 df-3 12330 df-4 12331 df-n0 12527 df-z 12614 df-uz 12879 df-rp 13035 df-seq 14043 df-exp 14103 df-cj 15138 df-re 15139 df-im 15140 df-sqrt 15274 df-abs 15275 df-grpo 30512 df-gid 30513 df-ablo 30564 df-vc 30578 df-nv 30611 df-va 30614 df-ba 30615 df-sm 30616 df-0v 30617 df-nmcv 30619 df-hnorm 30987 df-hba 30988 df-hvsub 30990 df-nmop 31858 df-lnop 31860 df-bdop 31861 |
| This theorem is referenced by: nmbdoplbi 32043 nmophmi 32050 bdophmi 32051 lnopcnbd 32055 nmopadjlem 32108 nmopadji 32109 nmoptrii 32113 nmopcoi 32114 bdophsi 32115 bdopcoi 32117 nmoptri2i 32118 nmopcoadji 32120 nmopcoadj0i 32122 unierri 32123 |
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