| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > nmogtmnf | Structured version Visualization version GIF version | ||
| Description: The norm of an operator is greater than minus infinity. (Contributed by NM, 8-Dec-2007.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| nmoxr.1 | ⊢ 𝑋 = (BaseSet‘𝑈) |
| nmoxr.2 | ⊢ 𝑌 = (BaseSet‘𝑊) |
| nmoxr.3 | ⊢ 𝑁 = (𝑈 normOpOLD 𝑊) |
| Ref | Expression |
|---|---|
| nmogtmnf | ⊢ ((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ NrmCVec ∧ 𝑇:𝑋⟶𝑌) → -∞ < (𝑁‘𝑇)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | nmoxr.1 | . . . 4 ⊢ 𝑋 = (BaseSet‘𝑈) | |
| 2 | nmoxr.2 | . . . 4 ⊢ 𝑌 = (BaseSet‘𝑊) | |
| 3 | nmoxr.3 | . . . 4 ⊢ 𝑁 = (𝑈 normOpOLD 𝑊) | |
| 4 | 1, 2, 3 | nmorepnf 31370 | . . 3 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ NrmCVec ∧ 𝑇:𝑋⟶𝑌) → ((𝑁‘𝑇) ∈ ℝ ↔ (𝑁‘𝑇) ≠ +∞)) |
| 5 | df-ne 2956 | . . 3 ⊢ ((𝑁‘𝑇) ≠ +∞ ↔ ¬ (𝑁‘𝑇) = +∞) | |
| 6 | 4, 5 | bitrdi 290 | . 2 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ NrmCVec ∧ 𝑇:𝑋⟶𝑌) → ((𝑁‘𝑇) ∈ ℝ ↔ ¬ (𝑁‘𝑇) = +∞)) |
| 7 | xor3 385 | . . 3 ⊢ (¬ ((𝑁‘𝑇) ∈ ℝ ↔ (𝑁‘𝑇) = +∞) ↔ ((𝑁‘𝑇) ∈ ℝ ↔ ¬ (𝑁‘𝑇) = +∞)) | |
| 8 | nbior 901 | . . 3 ⊢ (¬ ((𝑁‘𝑇) ∈ ℝ ↔ (𝑁‘𝑇) = +∞) → ((𝑁‘𝑇) ∈ ℝ ∨ (𝑁‘𝑇) = +∞)) | |
| 9 | 7, 8 | sylbir 238 | . 2 ⊢ (((𝑁‘𝑇) ∈ ℝ ↔ ¬ (𝑁‘𝑇) = +∞) → ((𝑁‘𝑇) ∈ ℝ ∨ (𝑁‘𝑇) = +∞)) |
| 10 | mnfltxr 13256 | . 2 ⊢ (((𝑁‘𝑇) ∈ ℝ ∨ (𝑁‘𝑇) = +∞) → -∞ < (𝑁‘𝑇)) | |
| 11 | 6, 9, 10 | 3syl 19 | 1 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ NrmCVec ∧ 𝑇:𝑋⟶𝑌) → -∞ < (𝑁‘𝑇)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 → wi 4 ↔ wb 209 ∨ wo 861 ∧ w3a 1103 = wceq 1569 ∈ wcel 2144 ≠ wne 2955 class class class wbr 5102 ⟶wf 6534 ‘cfv 6538 (class class class)co 7420 ℝcr 11199 +∞cpnf 11340 -∞cmnf 11341 < clt 11343 NrmCVeccnv 31186 BaseSetcba 31188 normOpOLD cnmoo 31343 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-rep 5231 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7751 ax-cnex 11256 ax-resscn 11257 ax-1cn 11258 ax-icn 11259 ax-addcl 11260 ax-addrcl 11261 ax-mulcl 11262 ax-mulrcl 11263 ax-mulcom 11264 ax-addass 11265 ax-mulass 11266 ax-distr 11267 ax-i2m1 11268 ax-1ne0 11269 ax-1rid 11270 ax-rnegex 11271 ax-rrecex 11272 ax-cnre 11273 ax-pre-lttri 11274 ax-pre-lttrn 11275 ax-pre-ltadd 11276 ax-pre-mulgt0 11277 ax-pre-sup 11278 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-rmo 3365 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3847 df-ss 3896 df-pss 4014 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5545 df-eprel 5550 df-po 5558 df-so 5559 df-fr 5603 df-we 5605 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-pred 6304 df-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 df-iota 6494 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 df-fo 6544 df-f1o 6545 df-fv 6546 df-riota 7377 df-ov 7423 df-oprab 7424 df-mpo 7425 df-om 7878 df-1st 8001 df-2nd 8002 df-frecs 8299 df-wrecs 8330 df-recs 8379 df-rdg 8418 df-er 8717 df-map 8849 df-en 8974 df-dom 8975 df-sdom 8976 df-sup 9434 df-pnf 11345 df-mnf 11346 df-xr 11347 df-ltxr 11348 df-le 11349 df-sub 11543 df-neg 11544 df-div 11974 df-nn 12336 df-2 12405 df-3 12406 df-n0 12607 df-z 12694 df-uz 12966 df-rp 13121 df-seq 14145 df-exp 14205 df-cj 15266 df-re 15267 df-im 15268 df-sqrt 15402 df-abs 15403 df-grpo 31095 df-gid 31096 df-ginv 31097 df-ablo 31147 df-vc 31161 df-nv 31194 df-va 31197 df-ba 31198 df-sm 31199 df-0v 31200 df-nmcv 31202 df-nmoo 31347 |
| This theorem is used by: nmobndi 31377 nmblore 31388 ubthlem3 31474 |
| Copyright terms: Public domain | W3C validator |