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Mathbox for Glauco Siliprandi |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > liminfgord | Structured version Visualization version GIF version |
Description: Ordering property of the inferior limit function. (Contributed by Glauco Siliprandi, 2-Jan-2022.) |
Ref | Expression |
---|---|
liminfgord | ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵) → inf(((𝐹 “ (𝐴[,)+∞)) ∩ ℝ*), ℝ*, < ) ≤ inf(((𝐹 “ (𝐵[,)+∞)) ∩ ℝ*), ℝ*, < )) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | inss2 4229 | . . . . 5 ⊢ ((𝐹 “ (𝐴[,)+∞)) ∩ ℝ*) ⊆ ℝ* | |
2 | 1 | a1i 11 | . . . 4 ⊢ (((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵) ∧ 𝑥 ∈ ((𝐹 “ (𝐵[,)+∞)) ∩ ℝ*)) → ((𝐹 “ (𝐴[,)+∞)) ∩ ℝ*) ⊆ ℝ*) |
3 | rexr 11257 | . . . . . . . 8 ⊢ (𝐴 ∈ ℝ → 𝐴 ∈ ℝ*) | |
4 | 3 | 3ad2ant1 1134 | . . . . . . 7 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵) → 𝐴 ∈ ℝ*) |
5 | simp3 1139 | . . . . . . 7 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵) → 𝐴 ≤ 𝐵) | |
6 | df-ico 13327 | . . . . . . . 8 ⊢ [,) = (𝑥 ∈ ℝ*, 𝑦 ∈ ℝ* ↦ {𝑧 ∈ ℝ* ∣ (𝑥 ≤ 𝑧 ∧ 𝑧 < 𝑦)}) | |
7 | xrletr 13134 | . . . . . . . 8 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ* ∧ 𝑤 ∈ ℝ*) → ((𝐴 ≤ 𝐵 ∧ 𝐵 ≤ 𝑤) → 𝐴 ≤ 𝑤)) | |
8 | 6, 6, 7 | ixxss1 13339 | . . . . . . 7 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐴 ≤ 𝐵) → (𝐵[,)+∞) ⊆ (𝐴[,)+∞)) |
9 | 4, 5, 8 | syl2anc 585 | . . . . . 6 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵) → (𝐵[,)+∞) ⊆ (𝐴[,)+∞)) |
10 | imass2 6099 | . . . . . 6 ⊢ ((𝐵[,)+∞) ⊆ (𝐴[,)+∞) → (𝐹 “ (𝐵[,)+∞)) ⊆ (𝐹 “ (𝐴[,)+∞))) | |
11 | ssrin 4233 | . . . . . 6 ⊢ ((𝐹 “ (𝐵[,)+∞)) ⊆ (𝐹 “ (𝐴[,)+∞)) → ((𝐹 “ (𝐵[,)+∞)) ∩ ℝ*) ⊆ ((𝐹 “ (𝐴[,)+∞)) ∩ ℝ*)) | |
12 | 9, 10, 11 | 3syl 18 | . . . . 5 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵) → ((𝐹 “ (𝐵[,)+∞)) ∩ ℝ*) ⊆ ((𝐹 “ (𝐴[,)+∞)) ∩ ℝ*)) |
13 | 12 | sselda 3982 | . . . 4 ⊢ (((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵) ∧ 𝑥 ∈ ((𝐹 “ (𝐵[,)+∞)) ∩ ℝ*)) → 𝑥 ∈ ((𝐹 “ (𝐴[,)+∞)) ∩ ℝ*)) |
14 | infxrlb 13310 | . . . 4 ⊢ ((((𝐹 “ (𝐴[,)+∞)) ∩ ℝ*) ⊆ ℝ* ∧ 𝑥 ∈ ((𝐹 “ (𝐴[,)+∞)) ∩ ℝ*)) → inf(((𝐹 “ (𝐴[,)+∞)) ∩ ℝ*), ℝ*, < ) ≤ 𝑥) | |
15 | 2, 13, 14 | syl2anc 585 | . . 3 ⊢ (((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵) ∧ 𝑥 ∈ ((𝐹 “ (𝐵[,)+∞)) ∩ ℝ*)) → inf(((𝐹 “ (𝐴[,)+∞)) ∩ ℝ*), ℝ*, < ) ≤ 𝑥) |
16 | 15 | ralrimiva 3147 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵) → ∀𝑥 ∈ ((𝐹 “ (𝐵[,)+∞)) ∩ ℝ*)inf(((𝐹 “ (𝐴[,)+∞)) ∩ ℝ*), ℝ*, < ) ≤ 𝑥) |
17 | inss2 4229 | . . 3 ⊢ ((𝐹 “ (𝐵[,)+∞)) ∩ ℝ*) ⊆ ℝ* | |
18 | infxrcl 13309 | . . . 4 ⊢ (((𝐹 “ (𝐴[,)+∞)) ∩ ℝ*) ⊆ ℝ* → inf(((𝐹 “ (𝐴[,)+∞)) ∩ ℝ*), ℝ*, < ) ∈ ℝ*) | |
19 | 1, 18 | ax-mp 5 | . . 3 ⊢ inf(((𝐹 “ (𝐴[,)+∞)) ∩ ℝ*), ℝ*, < ) ∈ ℝ* |
20 | infxrgelb 13311 | . . 3 ⊢ ((((𝐹 “ (𝐵[,)+∞)) ∩ ℝ*) ⊆ ℝ* ∧ inf(((𝐹 “ (𝐴[,)+∞)) ∩ ℝ*), ℝ*, < ) ∈ ℝ*) → (inf(((𝐹 “ (𝐴[,)+∞)) ∩ ℝ*), ℝ*, < ) ≤ inf(((𝐹 “ (𝐵[,)+∞)) ∩ ℝ*), ℝ*, < ) ↔ ∀𝑥 ∈ ((𝐹 “ (𝐵[,)+∞)) ∩ ℝ*)inf(((𝐹 “ (𝐴[,)+∞)) ∩ ℝ*), ℝ*, < ) ≤ 𝑥)) | |
21 | 17, 19, 20 | mp2an 691 | . 2 ⊢ (inf(((𝐹 “ (𝐴[,)+∞)) ∩ ℝ*), ℝ*, < ) ≤ inf(((𝐹 “ (𝐵[,)+∞)) ∩ ℝ*), ℝ*, < ) ↔ ∀𝑥 ∈ ((𝐹 “ (𝐵[,)+∞)) ∩ ℝ*)inf(((𝐹 “ (𝐴[,)+∞)) ∩ ℝ*), ℝ*, < ) ≤ 𝑥) |
22 | 16, 21 | sylibr 233 | 1 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵) → inf(((𝐹 “ (𝐴[,)+∞)) ∩ ℝ*), ℝ*, < ) ≤ inf(((𝐹 “ (𝐵[,)+∞)) ∩ ℝ*), ℝ*, < )) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ wa 397 ∧ w3a 1088 ∈ wcel 2107 ∀wral 3062 ∩ cin 3947 ⊆ wss 3948 class class class wbr 5148 “ cima 5679 (class class class)co 7406 infcinf 9433 ℝcr 11106 +∞cpnf 11242 ℝ*cxr 11244 < clt 11245 ≤ cle 11246 [,)cico 13323 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2109 ax-9 2117 ax-10 2138 ax-11 2155 ax-12 2172 ax-ext 2704 ax-sep 5299 ax-nul 5306 ax-pow 5363 ax-pr 5427 ax-un 7722 ax-cnex 11163 ax-resscn 11164 ax-1cn 11165 ax-icn 11166 ax-addcl 11167 ax-addrcl 11168 ax-mulcl 11169 ax-mulrcl 11170 ax-mulcom 11171 ax-addass 11172 ax-mulass 11173 ax-distr 11174 ax-i2m1 11175 ax-1ne0 11176 ax-1rid 11177 ax-rnegex 11178 ax-rrecex 11179 ax-cnre 11180 ax-pre-lttri 11181 ax-pre-lttrn 11182 ax-pre-ltadd 11183 ax-pre-mulgt0 11184 ax-pre-sup 11185 |
This theorem depends on definitions: df-bi 206 df-an 398 df-or 847 df-3or 1089 df-3an 1090 df-tru 1545 df-fal 1555 df-ex 1783 df-nf 1787 df-sb 2069 df-mo 2535 df-eu 2564 df-clab 2711 df-cleq 2725 df-clel 2811 df-nfc 2886 df-ne 2942 df-nel 3048 df-ral 3063 df-rex 3072 df-rmo 3377 df-reu 3378 df-rab 3434 df-v 3477 df-sbc 3778 df-csb 3894 df-dif 3951 df-un 3953 df-in 3955 df-ss 3965 df-nul 4323 df-if 4529 df-pw 4604 df-sn 4629 df-pr 4631 df-op 4635 df-uni 4909 df-iun 4999 df-br 5149 df-opab 5211 df-mpt 5232 df-id 5574 df-po 5588 df-so 5589 df-xp 5682 df-rel 5683 df-cnv 5684 df-co 5685 df-dm 5686 df-rn 5687 df-res 5688 df-ima 5689 df-iota 6493 df-fun 6543 df-fn 6544 df-f 6545 df-f1 6546 df-fo 6547 df-f1o 6548 df-fv 6549 df-riota 7362 df-ov 7409 df-oprab 7410 df-mpo 7411 df-1st 7972 df-2nd 7973 df-er 8700 df-en 8937 df-dom 8938 df-sdom 8939 df-sup 9434 df-inf 9435 df-pnf 11247 df-mnf 11248 df-xr 11249 df-ltxr 11250 df-le 11251 df-sub 11443 df-neg 11444 df-ico 13327 |
This theorem is referenced by: liminfval2 44471 |
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