| Mathbox for Glauco Siliprandi |
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| Mirrors > Home > MPE Home > Th. List > Mathboxes > limsuplt2 | Structured version Visualization version GIF version | ||
| Description: The defining property of the superior limit. (Contributed by Glauco Siliprandi, 2-Jan-2022.) |
| Ref | Expression |
|---|---|
| limsuplt2.1 | ⊢ (𝜑 → 𝐵 ⊆ ℝ) |
| limsuplt2.2 | ⊢ (𝜑 → 𝐹:𝐵⟶ℝ*) |
| limsuplt2.3 | ⊢ (𝜑 → 𝐴 ∈ ℝ*) |
| Ref | Expression |
|---|---|
| limsuplt2 | ⊢ (𝜑 → ((lim sup‘𝐹) < 𝐴 ↔ ∃𝑘 ∈ ℝ sup(((𝐹 “ (𝑘[,)+∞)) ∩ ℝ*), ℝ*, < ) < 𝐴)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | limsuplt2.1 | . . 3 ⊢ (𝜑 → 𝐵 ⊆ ℝ) | |
| 2 | limsuplt2.2 | . . 3 ⊢ (𝜑 → 𝐹:𝐵⟶ℝ*) | |
| 3 | limsuplt2.3 | . . 3 ⊢ (𝜑 → 𝐴 ∈ ℝ*) | |
| 4 | eqid 2761 | . . . 4 ⊢ (𝑗 ∈ ℝ ↦ sup(((𝐹 “ (𝑗[,)+∞)) ∩ ℝ*), ℝ*, < )) = (𝑗 ∈ ℝ ↦ sup(((𝐹 “ (𝑗[,)+∞)) ∩ ℝ*), ℝ*, < )) | |
| 5 | 4 | limsuplt 15639 | . . 3 ⊢ ((𝐵 ⊆ ℝ ∧ 𝐹:𝐵⟶ℝ* ∧ 𝐴 ∈ ℝ*) → ((lim sup‘𝐹) < 𝐴 ↔ ∃𝑖 ∈ ℝ ((𝑗 ∈ ℝ ↦ sup(((𝐹 “ (𝑗[,)+∞)) ∩ ℝ*), ℝ*, < ))‘𝑖) < 𝐴)) |
| 6 | 1, 2, 3, 5 | syl3anc 1398 | . 2 ⊢ (𝜑 → ((lim sup‘𝐹) < 𝐴 ↔ ∃𝑖 ∈ ℝ ((𝑗 ∈ ℝ ↦ sup(((𝐹 “ (𝑗[,)+∞)) ∩ ℝ*), ℝ*, < ))‘𝑖) < 𝐴)) |
| 7 | oveq1 7425 | . . . . . . . 8 ⊢ (𝑗 = 𝑖 → (𝑗[,)+∞) = (𝑖[,)+∞)) | |
| 8 | 7 | imaeq2d 6052 | . . . . . . 7 ⊢ (𝑗 = 𝑖 → (𝐹 “ (𝑗[,)+∞)) = (𝐹 “ (𝑖[,)+∞))) |
| 9 | 8 | ineq1d 4165 | . . . . . 6 ⊢ (𝑗 = 𝑖 → ((𝐹 “ (𝑗[,)+∞)) ∩ ℝ*) = ((𝐹 “ (𝑖[,)+∞)) ∩ ℝ*)) |
| 10 | 9 | supeq1d 9431 | . . . . 5 ⊢ (𝑗 = 𝑖 → sup(((𝐹 “ (𝑗[,)+∞)) ∩ ℝ*), ℝ*, < ) = sup(((𝐹 “ (𝑖[,)+∞)) ∩ ℝ*), ℝ*, < )) |
| 11 | simpr 490 | . . . . 5 ⊢ ((𝜑 ∧ 𝑖 ∈ ℝ) → 𝑖 ∈ ℝ) | |
| 12 | xrltso 13263 | . . . . . . 7 ⊢ < Or ℝ* | |
| 13 | 12 | supex 9449 | . . . . . 6 ⊢ sup(((𝐹 “ (𝑖[,)+∞)) ∩ ℝ*), ℝ*, < ) ∈ V |
| 14 | 13 | a1i 11 | . . . . 5 ⊢ ((𝜑 ∧ 𝑖 ∈ ℝ) → sup(((𝐹 “ (𝑖[,)+∞)) ∩ ℝ*), ℝ*, < ) ∈ V) |
| 15 | 4, 10, 11, 14 | fvmptd3 7015 | . . . 4 ⊢ ((𝜑 ∧ 𝑖 ∈ ℝ) → ((𝑗 ∈ ℝ ↦ sup(((𝐹 “ (𝑗[,)+∞)) ∩ ℝ*), ℝ*, < ))‘𝑖) = sup(((𝐹 “ (𝑖[,)+∞)) ∩ ℝ*), ℝ*, < )) |
| 16 | 15 | breq1d 5113 | . . 3 ⊢ ((𝜑 ∧ 𝑖 ∈ ℝ) → (((𝑗 ∈ ℝ ↦ sup(((𝐹 “ (𝑗[,)+∞)) ∩ ℝ*), ℝ*, < ))‘𝑖) < 𝐴 ↔ sup(((𝐹 “ (𝑖[,)+∞)) ∩ ℝ*), ℝ*, < ) < 𝐴)) |
| 17 | 16 | rexbidva 3185 | . 2 ⊢ (𝜑 → (∃𝑖 ∈ ℝ ((𝑗 ∈ ℝ ↦ sup(((𝐹 “ (𝑗[,)+∞)) ∩ ℝ*), ℝ*, < ))‘𝑖) < 𝐴 ↔ ∃𝑖 ∈ ℝ sup(((𝐹 “ (𝑖[,)+∞)) ∩ ℝ*), ℝ*, < ) < 𝐴)) |
| 18 | oveq1 7425 | . . . . . . . 8 ⊢ (𝑖 = 𝑘 → (𝑖[,)+∞) = (𝑘[,)+∞)) | |
| 19 | 18 | imaeq2d 6052 | . . . . . . 7 ⊢ (𝑖 = 𝑘 → (𝐹 “ (𝑖[,)+∞)) = (𝐹 “ (𝑘[,)+∞))) |
| 20 | 19 | ineq1d 4165 | . . . . . 6 ⊢ (𝑖 = 𝑘 → ((𝐹 “ (𝑖[,)+∞)) ∩ ℝ*) = ((𝐹 “ (𝑘[,)+∞)) ∩ ℝ*)) |
| 21 | 20 | supeq1d 9431 | . . . . 5 ⊢ (𝑖 = 𝑘 → sup(((𝐹 “ (𝑖[,)+∞)) ∩ ℝ*), ℝ*, < ) = sup(((𝐹 “ (𝑘[,)+∞)) ∩ ℝ*), ℝ*, < )) |
| 22 | 21 | breq1d 5113 | . . . 4 ⊢ (𝑖 = 𝑘 → (sup(((𝐹 “ (𝑖[,)+∞)) ∩ ℝ*), ℝ*, < ) < 𝐴 ↔ sup(((𝐹 “ (𝑘[,)+∞)) ∩ ℝ*), ℝ*, < ) < 𝐴)) |
| 23 | 22 | cbvrexvw 3242 | . . 3 ⊢ (∃𝑖 ∈ ℝ sup(((𝐹 “ (𝑖[,)+∞)) ∩ ℝ*), ℝ*, < ) < 𝐴 ↔ ∃𝑘 ∈ ℝ sup(((𝐹 “ (𝑘[,)+∞)) ∩ ℝ*), ℝ*, < ) < 𝐴) |
| 24 | 23 | a1i 11 | . 2 ⊢ (𝜑 → (∃𝑖 ∈ ℝ sup(((𝐹 “ (𝑖[,)+∞)) ∩ ℝ*), ℝ*, < ) < 𝐴 ↔ ∃𝑘 ∈ ℝ sup(((𝐹 “ (𝑘[,)+∞)) ∩ ℝ*), ℝ*, < ) < 𝐴)) |
| 25 | 6, 17, 24 | 3bitrd 308 | 1 ⊢ (𝜑 → ((lim sup‘𝐹) < 𝐴 ↔ ∃𝑘 ∈ ℝ sup(((𝐹 “ (𝑘[,)+∞)) ∩ ℝ*), ℝ*, < ) < 𝐴)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 401 = wceq 1570 ∈ wcel 2145 ∃wrex 3087 Vcvv 3451 ∩ cin 3898 ⊆ wss 3899 class class class wbr 5103 ↦ cmpt 5186 “ cima 5654 ⟶wf 6533 ‘cfv 6537 (class class class)co 7418 supcsup 9425 ℝcr 11192 +∞cpnf 11333 ℝ*cxr 11335 < clt 11336 [,)cico 13471 lim supclsp 15630 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2733 ax-sep 5249 ax-nul 5260 ax-pow 5327 ax-pr 5391 ax-un 7749 ax-cnex 11249 ax-resscn 11250 ax-1cn 11251 ax-icn 11252 ax-addcl 11253 ax-addrcl 11254 ax-mulcl 11255 ax-mulrcl 11256 ax-mulcom 11257 ax-addass 11258 ax-mulass 11259 ax-distr 11260 ax-i2m1 11261 ax-1ne0 11262 ax-1rid 11263 ax-rnegex 11264 ax-rrecex 11265 ax-cnre 11266 ax-pre-lttri 11267 ax-pre-lttrn 11268 ax-pre-ltadd 11269 ax-pre-mulgt0 11270 ax-pre-sup 11271 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3063 df-ral 3078 df-rex 3088 df-rmo 3366 df-reu 3367 df-rab 3414 df-v 3453 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-br 5104 df-opab 5168 df-mpt 5187 df-id 5546 df-po 5559 df-so 5560 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-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-riota 7375 df-ov 7421 df-oprab 7422 df-mpo 7423 df-er 8710 df-en 8967 df-dom 8968 df-sdom 8969 df-sup 9427 df-inf 9428 df-pnf 11338 df-mnf 11339 df-xr 11340 df-ltxr 11341 df-le 11342 df-sub 11536 df-neg 11537 df-limsup 15631 |
| This theorem is used by: (None) |
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