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| Mirrors > Home > ILE Home > Th. List > climge0 | GIF version | ||
| Description: A nonnegative sequence converges to a nonnegative number. (Contributed by NM, 11-Sep-2005.) |
| Ref | Expression |
|---|---|
| climrecl.1 | ⊢ 𝑍 = (ℤ≥‘𝑀) |
| climrecl.2 | ⊢ (𝜑 → 𝑀 ∈ ℤ) |
| climrecl.3 | ⊢ (𝜑 → 𝐹 ⇝ 𝐴) |
| climrecl.4 | ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝐹‘𝑘) ∈ ℝ) |
| climge0.5 | ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → 0 ≤ (𝐹‘𝑘)) |
| Ref | Expression |
|---|---|
| climge0 | ⊢ (𝜑 → 0 ≤ 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | climrecl.1 | . . . . . 6 ⊢ 𝑍 = (ℤ≥‘𝑀) | |
| 2 | climrecl.2 | . . . . . . 7 ⊢ (𝜑 → 𝑀 ∈ ℤ) | |
| 3 | 2 | adantr 276 | . . . . . 6 ⊢ ((𝜑 ∧ 𝐴 < 0) → 𝑀 ∈ ℤ) |
| 4 | climrecl.3 | . . . . . . . . . 10 ⊢ (𝜑 → 𝐹 ⇝ 𝐴) | |
| 5 | climrecl.4 | . . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝐹‘𝑘) ∈ ℝ) | |
| 6 | 1, 2, 4, 5 | climrecl 12002 | . . . . . . . . 9 ⊢ (𝜑 → 𝐴 ∈ ℝ) |
| 7 | 6 | adantr 276 | . . . . . . . 8 ⊢ ((𝜑 ∧ 𝐴 < 0) → 𝐴 ∈ ℝ) |
| 8 | 7 | renegcld 8649 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝐴 < 0) → -𝐴 ∈ ℝ) |
| 9 | 6 | lt0neg1d 8785 | . . . . . . . 8 ⊢ (𝜑 → (𝐴 < 0 ↔ 0 < -𝐴)) |
| 10 | 9 | biimpa 296 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝐴 < 0) → 0 < -𝐴) |
| 11 | 8, 10 | elrpd 10022 | . . . . . 6 ⊢ ((𝜑 ∧ 𝐴 < 0) → -𝐴 ∈ ℝ+) |
| 12 | eqidd 2233 | . . . . . 6 ⊢ (((𝜑 ∧ 𝐴 < 0) ∧ 𝑘 ∈ 𝑍) → (𝐹‘𝑘) = (𝐹‘𝑘)) | |
| 13 | 4 | adantr 276 | . . . . . 6 ⊢ ((𝜑 ∧ 𝐴 < 0) → 𝐹 ⇝ 𝐴) |
| 14 | 1, 3, 11, 12, 13 | climi2 11966 | . . . . 5 ⊢ ((𝜑 ∧ 𝐴 < 0) → ∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ≥‘𝑗)(abs‘((𝐹‘𝑘) − 𝐴)) < -𝐴) |
| 15 | 1 | r19.2uz 11671 | . . . . 5 ⊢ (∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ≥‘𝑗)(abs‘((𝐹‘𝑘) − 𝐴)) < -𝐴 → ∃𝑘 ∈ 𝑍 (abs‘((𝐹‘𝑘) − 𝐴)) < -𝐴) |
| 16 | 14, 15 | syl 14 | . . . 4 ⊢ ((𝜑 ∧ 𝐴 < 0) → ∃𝑘 ∈ 𝑍 (abs‘((𝐹‘𝑘) − 𝐴)) < -𝐴) |
| 17 | simprr 533 | . . . . . . . 8 ⊢ (((𝜑 ∧ 𝐴 < 0) ∧ (𝑘 ∈ 𝑍 ∧ (abs‘((𝐹‘𝑘) − 𝐴)) < -𝐴)) → (abs‘((𝐹‘𝑘) − 𝐴)) < -𝐴) | |
| 18 | 5 | ad2ant2r 509 | . . . . . . . . 9 ⊢ (((𝜑 ∧ 𝐴 < 0) ∧ (𝑘 ∈ 𝑍 ∧ (abs‘((𝐹‘𝑘) − 𝐴)) < -𝐴)) → (𝐹‘𝑘) ∈ ℝ) |
| 19 | 7 | adantr 276 | . . . . . . . . 9 ⊢ (((𝜑 ∧ 𝐴 < 0) ∧ (𝑘 ∈ 𝑍 ∧ (abs‘((𝐹‘𝑘) − 𝐴)) < -𝐴)) → 𝐴 ∈ ℝ) |
| 20 | 8 | adantr 276 | . . . . . . . . 9 ⊢ (((𝜑 ∧ 𝐴 < 0) ∧ (𝑘 ∈ 𝑍 ∧ (abs‘((𝐹‘𝑘) − 𝐴)) < -𝐴)) → -𝐴 ∈ ℝ) |
| 21 | 18, 19, 20 | absdifltd 11856 | . . . . . . . 8 ⊢ (((𝜑 ∧ 𝐴 < 0) ∧ (𝑘 ∈ 𝑍 ∧ (abs‘((𝐹‘𝑘) − 𝐴)) < -𝐴)) → ((abs‘((𝐹‘𝑘) − 𝐴)) < -𝐴 ↔ ((𝐴 − -𝐴) < (𝐹‘𝑘) ∧ (𝐹‘𝑘) < (𝐴 + -𝐴)))) |
| 22 | 17, 21 | mpbid 147 | . . . . . . 7 ⊢ (((𝜑 ∧ 𝐴 < 0) ∧ (𝑘 ∈ 𝑍 ∧ (abs‘((𝐹‘𝑘) − 𝐴)) < -𝐴)) → ((𝐴 − -𝐴) < (𝐹‘𝑘) ∧ (𝐹‘𝑘) < (𝐴 + -𝐴))) |
| 23 | 22 | simprd 114 | . . . . . 6 ⊢ (((𝜑 ∧ 𝐴 < 0) ∧ (𝑘 ∈ 𝑍 ∧ (abs‘((𝐹‘𝑘) − 𝐴)) < -𝐴)) → (𝐹‘𝑘) < (𝐴 + -𝐴)) |
| 24 | 19 | recnd 8298 | . . . . . . 7 ⊢ (((𝜑 ∧ 𝐴 < 0) ∧ (𝑘 ∈ 𝑍 ∧ (abs‘((𝐹‘𝑘) − 𝐴)) < -𝐴)) → 𝐴 ∈ ℂ) |
| 25 | 24 | negidd 8570 | . . . . . 6 ⊢ (((𝜑 ∧ 𝐴 < 0) ∧ (𝑘 ∈ 𝑍 ∧ (abs‘((𝐹‘𝑘) − 𝐴)) < -𝐴)) → (𝐴 + -𝐴) = 0) |
| 26 | 23, 25 | breqtrd 4134 | . . . . 5 ⊢ (((𝜑 ∧ 𝐴 < 0) ∧ (𝑘 ∈ 𝑍 ∧ (abs‘((𝐹‘𝑘) − 𝐴)) < -𝐴)) → (𝐹‘𝑘) < 0) |
| 27 | climge0.5 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → 0 ≤ (𝐹‘𝑘)) | |
| 28 | 27 | ad2ant2r 509 | . . . . . 6 ⊢ (((𝜑 ∧ 𝐴 < 0) ∧ (𝑘 ∈ 𝑍 ∧ (abs‘((𝐹‘𝑘) − 𝐴)) < -𝐴)) → 0 ≤ (𝐹‘𝑘)) |
| 29 | 0red 8271 | . . . . . . 7 ⊢ (((𝜑 ∧ 𝐴 < 0) ∧ (𝑘 ∈ 𝑍 ∧ (abs‘((𝐹‘𝑘) − 𝐴)) < -𝐴)) → 0 ∈ ℝ) | |
| 30 | 29, 18 | lenltd 8387 | . . . . . 6 ⊢ (((𝜑 ∧ 𝐴 < 0) ∧ (𝑘 ∈ 𝑍 ∧ (abs‘((𝐹‘𝑘) − 𝐴)) < -𝐴)) → (0 ≤ (𝐹‘𝑘) ↔ ¬ (𝐹‘𝑘) < 0)) |
| 31 | 28, 30 | mpbid 147 | . . . . 5 ⊢ (((𝜑 ∧ 𝐴 < 0) ∧ (𝑘 ∈ 𝑍 ∧ (abs‘((𝐹‘𝑘) − 𝐴)) < -𝐴)) → ¬ (𝐹‘𝑘) < 0) |
| 32 | 26, 31 | pm2.21fal 1418 | . . . 4 ⊢ (((𝜑 ∧ 𝐴 < 0) ∧ (𝑘 ∈ 𝑍 ∧ (abs‘((𝐹‘𝑘) − 𝐴)) < -𝐴)) → ⊥) |
| 33 | 16, 32 | rexlimddv 2665 | . . 3 ⊢ ((𝜑 ∧ 𝐴 < 0) → ⊥) |
| 34 | 33 | inegd 1417 | . 2 ⊢ (𝜑 → ¬ 𝐴 < 0) |
| 35 | 0re 8270 | . . 3 ⊢ 0 ∈ ℝ | |
| 36 | lenlt 8345 | . . 3 ⊢ ((0 ∈ ℝ ∧ 𝐴 ∈ ℝ) → (0 ≤ 𝐴 ↔ ¬ 𝐴 < 0)) | |
| 37 | 35, 6, 36 | sylancr 414 | . 2 ⊢ (𝜑 → (0 ≤ 𝐴 ↔ ¬ 𝐴 < 0)) |
| 38 | 34, 37 | mpbird 167 | 1 ⊢ (𝜑 → 0 ≤ 𝐴) |
| Colors of variables: wff set class |
| Syntax hints: ¬ wn 3 → wi 4 ∧ wa 104 ↔ wb 105 = wceq 1398 ⊥wfal 1403 ∈ wcel 2203 ∀wral 2520 ∃wrex 2521 class class class wbr 4108 ‘cfv 5351 (class class class)co 6049 ℝcr 8122 0cc0 8123 + caddc 8126 < clt 8304 ≤ cle 8305 − cmin 8440 -cneg 8441 ℤcz 9573 ℤ≥cuz 9849 abscabs 11675 ⇝ cli 11956 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 619 ax-in2 620 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2205 ax-14 2206 ax-ext 2214 ax-coll 4224 ax-sep 4227 ax-nul 4235 ax-pow 4286 ax-pr 4321 ax-un 4553 ax-setind 4658 ax-iinf 4709 ax-cnex 8214 ax-resscn 8215 ax-1cn 8216 ax-1re 8217 ax-icn 8218 ax-addcl 8219 ax-addrcl 8220 ax-mulcl 8221 ax-mulrcl 8222 ax-addcom 8223 ax-mulcom 8224 ax-addass 8225 ax-mulass 8226 ax-distr 8227 ax-i2m1 8228 ax-0lt1 8229 ax-1rid 8230 ax-0id 8231 ax-rnegex 8232 ax-precex 8233 ax-cnre 8234 ax-pre-ltirr 8235 ax-pre-ltwlin 8236 ax-pre-lttrn 8237 ax-pre-apti 8238 ax-pre-ltadd 8239 ax-pre-mulgt0 8240 ax-pre-mulext 8241 ax-arch 8242 ax-caucvg 8243 |
| This theorem depends on definitions: df-bi 117 df-dc 843 df-3or 1006 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1812 df-eu 2083 df-mo 2084 df-clab 2219 df-cleq 2225 df-clel 2228 df-nfc 2373 df-ne 2413 df-nel 2508 df-ral 2525 df-rex 2526 df-reu 2527 df-rmo 2528 df-rab 2529 df-v 2814 df-sbc 3042 df-csb 3138 df-dif 3212 df-un 3214 df-in 3216 df-ss 3223 df-nul 3508 df-if 3620 df-pw 3670 df-sn 3694 df-pr 3695 df-op 3697 df-uni 3914 df-int 3949 df-iun 3992 df-br 4109 df-opab 4171 df-mpt 4172 df-tr 4208 df-id 4413 df-po 4416 df-iso 4417 df-iord 4486 df-on 4488 df-ilim 4489 df-suc 4491 df-iom 4712 df-xp 4754 df-rel 4755 df-cnv 4756 df-co 4757 df-dm 4758 df-rn 4759 df-res 4760 df-ima 4761 df-iota 5311 df-fun 5353 df-fn 5354 df-f 5355 df-f1 5356 df-fo 5357 df-f1o 5358 df-fv 5359 df-riota 6002 df-ov 6052 df-oprab 6053 df-mpo 6054 df-1st 6333 df-2nd 6334 df-recs 6535 df-frec 6621 df-pnf 8306 df-mnf 8307 df-xr 8308 df-ltxr 8309 df-le 8310 df-sub 8442 df-neg 8443 df-reap 8845 df-ap 8852 df-div 8943 df-inn 9234 df-2 9292 df-3 9293 df-4 9294 df-n0 9493 df-z 9574 df-uz 9850 df-rp 9983 df-seqfrec 10806 df-exp 10897 df-cj 11520 df-re 11521 df-im 11522 df-rsqrt 11676 df-abs 11677 df-clim 11957 |
| This theorem is referenced by: climle 12012 |
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