| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > rlimcnp3 | Structured version Visualization version GIF version | ||
| Description: Relate a limit of a real-valued sequence at infinity to the continuity of the function 𝑆(𝑦) = 𝑅(1 / 𝑦) at zero. (Contributed by Mario Carneiro, 1-Mar-2015.) |
| Ref | Expression |
|---|---|
| rlimcnp3.c | ⊢ (𝜑 → 𝐶 ∈ ℂ) |
| rlimcnp3.r | ⊢ ((𝜑 ∧ 𝑦 ∈ ℝ+) → 𝑆 ∈ ℂ) |
| rlimcnp3.s | ⊢ (𝑦 = (1 / 𝑥) → 𝑆 = 𝑅) |
| rlimcnp3.j | ⊢ 𝐽 = (TopOpen‘ℂfld) |
| rlimcnp3.k | ⊢ 𝐾 = (𝐽 ↾t (0[,)+∞)) |
| Ref | Expression |
|---|---|
| rlimcnp3 | ⊢ (𝜑 → ((𝑦 ∈ ℝ+ ↦ 𝑆) ⇝𝑟 𝐶 ↔ (𝑥 ∈ (0[,)+∞) ↦ if(𝑥 = 0, 𝐶, 𝑅)) ∈ ((𝐾 CnP 𝐽)‘0))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ssidd 3932 | . 2 ⊢ (𝜑 → (0[,)+∞) ⊆ (0[,)+∞)) | |
| 2 | 0e0icopnf 13596 | . . 3 ⊢ 0 ∈ (0[,)+∞) | |
| 3 | 2 | a1i 11 | . 2 ⊢ (𝜑 → 0 ∈ (0[,)+∞)) |
| 4 | rpssre 13135 | . . 3 ⊢ ℝ+ ⊆ ℝ | |
| 5 | 4 | a1i 11 | . 2 ⊢ (𝜑 → ℝ+ ⊆ ℝ) |
| 6 | rlimcnp3.c | . 2 ⊢ (𝜑 → 𝐶 ∈ ℂ) | |
| 7 | rlimcnp3.r | . 2 ⊢ ((𝜑 ∧ 𝑦 ∈ ℝ+) → 𝑆 ∈ ℂ) | |
| 8 | simpr 490 | . . 3 ⊢ ((𝜑 ∧ 𝑦 ∈ ℝ+) → 𝑦 ∈ ℝ+) | |
| 9 | rpreccl 13155 | . . . . . 6 ⊢ (𝑦 ∈ ℝ+ → (1 / 𝑦) ∈ ℝ+) | |
| 10 | 9 | adantl 487 | . . . . 5 ⊢ ((𝜑 ∧ 𝑦 ∈ ℝ+) → (1 / 𝑦) ∈ ℝ+) |
| 11 | 10 | rpred 13171 | . . . 4 ⊢ ((𝜑 ∧ 𝑦 ∈ ℝ+) → (1 / 𝑦) ∈ ℝ) |
| 12 | 10 | rpge0d 13175 | . . . 4 ⊢ ((𝜑 ∧ 𝑦 ∈ ℝ+) → 0 ≤ (1 / 𝑦)) |
| 13 | elrege0 13592 | . . . 4 ⊢ ((1 / 𝑦) ∈ (0[,)+∞) ↔ ((1 / 𝑦) ∈ ℝ ∧ 0 ≤ (1 / 𝑦))) | |
| 14 | 11, 12, 13 | sylanbrc 595 | . . 3 ⊢ ((𝜑 ∧ 𝑦 ∈ ℝ+) → (1 / 𝑦) ∈ (0[,)+∞)) |
| 15 | 8, 14 | 2thd 268 | . 2 ⊢ ((𝜑 ∧ 𝑦 ∈ ℝ+) → (𝑦 ∈ ℝ+ ↔ (1 / 𝑦) ∈ (0[,)+∞))) |
| 16 | rlimcnp3.s | . 2 ⊢ (𝑦 = (1 / 𝑥) → 𝑆 = 𝑅) | |
| 17 | rlimcnp3.j | . 2 ⊢ 𝐽 = (TopOpen‘ℂfld) | |
| 18 | rlimcnp3.k | . 2 ⊢ 𝐾 = (𝐽 ↾t (0[,)+∞)) | |
| 19 | 1, 3, 5, 6, 7, 15, 16, 17, 18 | rlimcnp2 27303 | 1 ⊢ (𝜑 → ((𝑦 ∈ ℝ+ ↦ 𝑆) ⇝𝑟 𝐶 ↔ (𝑥 ∈ (0[,)+∞) ↦ if(𝑥 = 0, 𝐶, 𝑅)) ∈ ((𝐾 CnP 𝐽)‘0))) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 401 = wceq 1569 ∈ wcel 2144 ⊆ wss 3896 ifcif 4481 class class class wbr 5102 ↦ cmpt 5185 ‘cfv 6543 (class class class)co 7424 ℂcc 11205 ℝcr 11206 0cc0 11207 1c1 11208 +∞cpnf 11347 ≤ cle 11351 / cdiv 11980 ℝ+crp 13127 [,)cico 13485 ⇝𝑟 crli 15661 ↾t crest 17600 TopOpenctopn 17601 ℂfldccnfld 21687 CnP ccnp 23552 |
| 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 5327 ax-pr 5391 ax-un 7755 ax-cnex 11263 ax-resscn 11264 ax-1cn 11265 ax-icn 11266 ax-addcl 11267 ax-addrcl 11268 ax-mulcl 11269 ax-mulrcl 11270 ax-mulcom 11271 ax-addass 11272 ax-mulass 11273 ax-distr 11274 ax-i2m1 11275 ax-1ne0 11276 ax-1rid 11277 ax-rnegex 11278 ax-rrecex 11279 ax-cnre 11280 ax-pre-lttri 11281 ax-pre-lttrn 11282 ax-pre-ltadd 11283 ax-pre-mulgt0 11284 ax-pre-sup 11285 |
| 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 3848 df-ss 3897 df-pss 4013 df-dif 4046 df-in 4090 df-un 4150 df-nul 4278 df-if 4482 df-pw 4558 df-sn 4585 df-pr 4587 df-tp 4589 df-op 4835 df-uni 4867 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5546 df-eprel 5551 df-po 5559 df-so 5560 df-fr 5604 df-we 5606 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-pred 6307 df-ord 6368 df-on 6369 df-lim 6370 df-suc 6371 df-iota 6497 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-riota 7381 df-ov 7427 df-oprab 7428 df-mpo 7429 df-om 7882 df-1st 8005 df-2nd 8006 df-frecs 8307 df-wrecs 8338 df-recs 8387 df-rdg 8426 df-1o 8484 df-er 8725 df-map 8857 df-pm 8858 df-en 8982 df-dom 8983 df-sdom 8984 df-fin 8985 df-sup 9441 df-inf 9442 df-pnf 11352 df-mnf 11353 df-xr 11354 df-ltxr 11355 df-le 11356 df-sub 11550 df-neg 11551 df-div 11981 df-nn 12343 df-2 12412 df-3 12413 df-4 12414 df-5 12415 df-6 12416 df-7 12417 df-8 12418 df-9 12419 df-n0 12614 df-z 12701 df-dec 12822 df-uz 12973 df-q 13083 df-rp 13128 df-xneg 13248 df-xadd 13249 df-xmul 13250 df-ioo 13487 df-ico 13489 df-fz 13647 df-seq 14152 df-exp 14212 df-cj 15275 df-re 15276 df-im 15277 df-sqrt 15411 df-abs 15412 df-rlim 15665 df-struct 17334 df-slot 17369 df-ndx 17381 df-base 17397 df-plusg 17450 df-mulr 17451 df-starv 17452 df-tset 17456 df-ple 17457 df-ds 17459 df-unif 17460 df-rest 17602 df-topn 17603 df-topgen 17623 df-psmet 21679 df-xmet 21680 df-met 21681 df-bl 21682 df-mopn 21683 df-cnfld 21688 df-top 23221 df-topon 23238 df-bases 23273 df-cnp 23555 |
| This theorem is used by: efrlim 27306 |
| Copyright terms: Public domain | W3C validator |