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 4205 | . . . . 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 10681 | . . . . . . . 8 ⊢ (𝐴 ∈ ℝ → 𝐴 ∈ ℝ*) | |
4 | 3 | 3ad2ant1 1129 | . . . . . . 7 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵) → 𝐴 ∈ ℝ*) |
5 | simp3 1134 | . . . . . . 7 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵) → 𝐴 ≤ 𝐵) | |
6 | df-ico 12738 | . . . . . . . 8 ⊢ [,) = (𝑥 ∈ ℝ*, 𝑦 ∈ ℝ* ↦ {𝑧 ∈ ℝ* ∣ (𝑥 ≤ 𝑧 ∧ 𝑧 < 𝑦)}) | |
7 | xrletr 12545 | . . . . . . . 8 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ* ∧ 𝑤 ∈ ℝ*) → ((𝐴 ≤ 𝐵 ∧ 𝐵 ≤ 𝑤) → 𝐴 ≤ 𝑤)) | |
8 | 6, 6, 7 | ixxss1 12750 | . . . . . . 7 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐴 ≤ 𝐵) → (𝐵[,)+∞) ⊆ (𝐴[,)+∞)) |
9 | 4, 5, 8 | syl2anc 586 | . . . . . 6 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵) → (𝐵[,)+∞) ⊆ (𝐴[,)+∞)) |
10 | imass2 5959 | . . . . . 6 ⊢ ((𝐵[,)+∞) ⊆ (𝐴[,)+∞) → (𝐹 “ (𝐵[,)+∞)) ⊆ (𝐹 “ (𝐴[,)+∞))) | |
11 | ssrin 4209 | . . . . . 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 3966 | . . . 4 ⊢ (((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵) ∧ 𝑥 ∈ ((𝐹 “ (𝐵[,)+∞)) ∩ ℝ*)) → 𝑥 ∈ ((𝐹 “ (𝐴[,)+∞)) ∩ ℝ*)) |
14 | infxrlb 12721 | . . . 4 ⊢ ((((𝐹 “ (𝐴[,)+∞)) ∩ ℝ*) ⊆ ℝ* ∧ 𝑥 ∈ ((𝐹 “ (𝐴[,)+∞)) ∩ ℝ*)) → inf(((𝐹 “ (𝐴[,)+∞)) ∩ ℝ*), ℝ*, < ) ≤ 𝑥) | |
15 | 2, 13, 14 | syl2anc 586 | . . 3 ⊢ (((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵) ∧ 𝑥 ∈ ((𝐹 “ (𝐵[,)+∞)) ∩ ℝ*)) → inf(((𝐹 “ (𝐴[,)+∞)) ∩ ℝ*), ℝ*, < ) ≤ 𝑥) |
16 | 15 | ralrimiva 3182 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐴 ≤ 𝐵) → ∀𝑥 ∈ ((𝐹 “ (𝐵[,)+∞)) ∩ ℝ*)inf(((𝐹 “ (𝐴[,)+∞)) ∩ ℝ*), ℝ*, < ) ≤ 𝑥) |
17 | inss2 4205 | . . 3 ⊢ ((𝐹 “ (𝐵[,)+∞)) ∩ ℝ*) ⊆ ℝ* | |
18 | infxrcl 12720 | . . . 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 12722 | . . 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 690 | . 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 236 | 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 208 ∧ wa 398 ∧ w3a 1083 ∈ wcel 2110 ∀wral 3138 ∩ cin 3934 ⊆ wss 3935 class class class wbr 5058 “ cima 5552 (class class class)co 7150 infcinf 8899 ℝcr 10530 +∞cpnf 10666 ℝ*cxr 10668 < clt 10669 ≤ cle 10670 [,)cico 12734 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1907 ax-6 1966 ax-7 2011 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2157 ax-12 2173 ax-ext 2793 ax-sep 5195 ax-nul 5202 ax-pow 5258 ax-pr 5321 ax-un 7455 ax-cnex 10587 ax-resscn 10588 ax-1cn 10589 ax-icn 10590 ax-addcl 10591 ax-addrcl 10592 ax-mulcl 10593 ax-mulrcl 10594 ax-mulcom 10595 ax-addass 10596 ax-mulass 10597 ax-distr 10598 ax-i2m1 10599 ax-1ne0 10600 ax-1rid 10601 ax-rnegex 10602 ax-rrecex 10603 ax-cnre 10604 ax-pre-lttri 10605 ax-pre-lttrn 10606 ax-pre-ltadd 10607 ax-pre-mulgt0 10608 ax-pre-sup 10609 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1536 df-ex 1777 df-nf 1781 df-sb 2066 df-mo 2618 df-eu 2650 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ne 3017 df-nel 3124 df-ral 3143 df-rex 3144 df-reu 3145 df-rmo 3146 df-rab 3147 df-v 3496 df-sbc 3772 df-csb 3883 df-dif 3938 df-un 3940 df-in 3942 df-ss 3951 df-nul 4291 df-if 4467 df-pw 4540 df-sn 4561 df-pr 4563 df-op 4567 df-uni 4832 df-iun 4913 df-br 5059 df-opab 5121 df-mpt 5139 df-id 5454 df-po 5468 df-so 5469 df-xp 5555 df-rel 5556 df-cnv 5557 df-co 5558 df-dm 5559 df-rn 5560 df-res 5561 df-ima 5562 df-iota 6308 df-fun 6351 df-fn 6352 df-f 6353 df-f1 6354 df-fo 6355 df-f1o 6356 df-fv 6357 df-riota 7108 df-ov 7153 df-oprab 7154 df-mpo 7155 df-1st 7683 df-2nd 7684 df-er 8283 df-en 8504 df-dom 8505 df-sdom 8506 df-sup 8900 df-inf 8901 df-pnf 10671 df-mnf 10672 df-xr 10673 df-ltxr 10674 df-le 10675 df-sub 10866 df-neg 10867 df-ico 12738 |
This theorem is referenced by: liminfval2 42042 |
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