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Mirrors > Home > MPE Home > Th. List > rlim0lt | Structured version Visualization version GIF version |
Description: Use strictly less-than in place of less equal in the real limit predicate. (Contributed by Mario Carneiro, 18-Sep-2014.) (Revised by Mario Carneiro, 28-Feb-2015.) |
Ref | Expression |
---|---|
rlim0.1 | ⊢ (𝜑 → ∀𝑧 ∈ 𝐴 𝐵 ∈ ℂ) |
rlim0.2 | ⊢ (𝜑 → 𝐴 ⊆ ℝ) |
Ref | Expression |
---|---|
rlim0lt | ⊢ (𝜑 → ((𝑧 ∈ 𝐴 ↦ 𝐵) ⇝𝑟 0 ↔ ∀𝑥 ∈ ℝ+ ∃𝑦 ∈ ℝ ∀𝑧 ∈ 𝐴 (𝑦 < 𝑧 → (abs‘𝐵) < 𝑥))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | rlim0.1 | . . 3 ⊢ (𝜑 → ∀𝑧 ∈ 𝐴 𝐵 ∈ ℂ) | |
2 | rlim0.2 | . . 3 ⊢ (𝜑 → 𝐴 ⊆ ℝ) | |
3 | 0cnd 10899 | . . 3 ⊢ (𝜑 → 0 ∈ ℂ) | |
4 | 1, 2, 3 | rlim2lt 15134 | . 2 ⊢ (𝜑 → ((𝑧 ∈ 𝐴 ↦ 𝐵) ⇝𝑟 0 ↔ ∀𝑥 ∈ ℝ+ ∃𝑦 ∈ ℝ ∀𝑧 ∈ 𝐴 (𝑦 < 𝑧 → (abs‘(𝐵 − 0)) < 𝑥))) |
5 | subid1 11171 | . . . . . . . . 9 ⊢ (𝐵 ∈ ℂ → (𝐵 − 0) = 𝐵) | |
6 | 5 | fveq2d 6760 | . . . . . . . 8 ⊢ (𝐵 ∈ ℂ → (abs‘(𝐵 − 0)) = (abs‘𝐵)) |
7 | 6 | breq1d 5080 | . . . . . . 7 ⊢ (𝐵 ∈ ℂ → ((abs‘(𝐵 − 0)) < 𝑥 ↔ (abs‘𝐵) < 𝑥)) |
8 | 7 | imbi2d 340 | . . . . . 6 ⊢ (𝐵 ∈ ℂ → ((𝑦 < 𝑧 → (abs‘(𝐵 − 0)) < 𝑥) ↔ (𝑦 < 𝑧 → (abs‘𝐵) < 𝑥))) |
9 | 8 | ralimi 3086 | . . . . 5 ⊢ (∀𝑧 ∈ 𝐴 𝐵 ∈ ℂ → ∀𝑧 ∈ 𝐴 ((𝑦 < 𝑧 → (abs‘(𝐵 − 0)) < 𝑥) ↔ (𝑦 < 𝑧 → (abs‘𝐵) < 𝑥))) |
10 | ralbi 3092 | . . . . 5 ⊢ (∀𝑧 ∈ 𝐴 ((𝑦 < 𝑧 → (abs‘(𝐵 − 0)) < 𝑥) ↔ (𝑦 < 𝑧 → (abs‘𝐵) < 𝑥)) → (∀𝑧 ∈ 𝐴 (𝑦 < 𝑧 → (abs‘(𝐵 − 0)) < 𝑥) ↔ ∀𝑧 ∈ 𝐴 (𝑦 < 𝑧 → (abs‘𝐵) < 𝑥))) | |
11 | 1, 9, 10 | 3syl 18 | . . . 4 ⊢ (𝜑 → (∀𝑧 ∈ 𝐴 (𝑦 < 𝑧 → (abs‘(𝐵 − 0)) < 𝑥) ↔ ∀𝑧 ∈ 𝐴 (𝑦 < 𝑧 → (abs‘𝐵) < 𝑥))) |
12 | 11 | rexbidv 3225 | . . 3 ⊢ (𝜑 → (∃𝑦 ∈ ℝ ∀𝑧 ∈ 𝐴 (𝑦 < 𝑧 → (abs‘(𝐵 − 0)) < 𝑥) ↔ ∃𝑦 ∈ ℝ ∀𝑧 ∈ 𝐴 (𝑦 < 𝑧 → (abs‘𝐵) < 𝑥))) |
13 | 12 | ralbidv 3120 | . 2 ⊢ (𝜑 → (∀𝑥 ∈ ℝ+ ∃𝑦 ∈ ℝ ∀𝑧 ∈ 𝐴 (𝑦 < 𝑧 → (abs‘(𝐵 − 0)) < 𝑥) ↔ ∀𝑥 ∈ ℝ+ ∃𝑦 ∈ ℝ ∀𝑧 ∈ 𝐴 (𝑦 < 𝑧 → (abs‘𝐵) < 𝑥))) |
14 | 4, 13 | bitrd 278 | 1 ⊢ (𝜑 → ((𝑧 ∈ 𝐴 ↦ 𝐵) ⇝𝑟 0 ↔ ∀𝑥 ∈ ℝ+ ∃𝑦 ∈ ℝ ∀𝑧 ∈ 𝐴 (𝑦 < 𝑧 → (abs‘𝐵) < 𝑥))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∈ wcel 2108 ∀wral 3063 ∃wrex 3064 ⊆ wss 3883 class class class wbr 5070 ↦ cmpt 5153 ‘cfv 6418 (class class class)co 7255 ℂcc 10800 ℝcr 10801 0cc0 10802 < clt 10940 − cmin 11135 ℝ+crp 12659 abscabs 14873 ⇝𝑟 crli 15122 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 ax-un 7566 ax-cnex 10858 ax-resscn 10859 ax-1cn 10860 ax-icn 10861 ax-addcl 10862 ax-addrcl 10863 ax-mulcl 10864 ax-mulrcl 10865 ax-mulcom 10866 ax-addass 10867 ax-mulass 10868 ax-distr 10869 ax-i2m1 10870 ax-1ne0 10871 ax-1rid 10872 ax-rnegex 10873 ax-rrecex 10874 ax-cnre 10875 ax-pre-lttri 10876 ax-pre-lttrn 10877 ax-pre-ltadd 10878 ax-pre-mulgt0 10879 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-nel 3049 df-ral 3068 df-rex 3069 df-reu 3070 df-rab 3072 df-v 3424 df-sbc 3712 df-csb 3829 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-op 4565 df-uni 4837 df-br 5071 df-opab 5133 df-mpt 5154 df-id 5480 df-po 5494 df-so 5495 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-f1 6423 df-fo 6424 df-f1o 6425 df-fv 6426 df-riota 7212 df-ov 7258 df-oprab 7259 df-mpo 7260 df-er 8456 df-pm 8576 df-en 8692 df-dom 8693 df-sdom 8694 df-pnf 10942 df-mnf 10943 df-xr 10944 df-ltxr 10945 df-le 10946 df-sub 11137 df-neg 11138 df-rlim 15126 |
This theorem is referenced by: divrcnv 15492 divlogrlim 25695 cxplim 26026 cxploglim 26032 |
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