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| Mirrors > Home > ILE Home > Th. List > ellimc3ap | GIF version | ||
| Description: Write the epsilon-delta definition of a limit. (Contributed by Mario Carneiro, 28-Dec-2016.) Use apartness. (Revised by Jim Kingdon, 3-Jun-2023.) |
| Ref | Expression |
|---|---|
| ellimc3.f | ⊢ (𝜑 → 𝐹:𝐴⟶ℂ) |
| ellimc3.a | ⊢ (𝜑 → 𝐴 ⊆ ℂ) |
| ellimc3.b | ⊢ (𝜑 → 𝐵 ∈ ℂ) |
| Ref | Expression |
|---|---|
| ellimc3ap | ⊢ (𝜑 → (𝐶 ∈ (𝐹 limℂ 𝐵) ↔ (𝐶 ∈ ℂ ∧ ∀𝑥 ∈ ℝ+ ∃𝑦 ∈ ℝ+ ∀𝑧 ∈ 𝐴 ((𝑧 # 𝐵 ∧ (abs‘(𝑧 − 𝐵)) < 𝑦) → (abs‘((𝐹‘𝑧) − 𝐶)) < 𝑥)))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ellimc3.f | . 2 ⊢ (𝜑 → 𝐹:𝐴⟶ℂ) | |
| 2 | ellimc3.a | . 2 ⊢ (𝜑 → 𝐴 ⊆ ℂ) | |
| 3 | ellimc3.b | . 2 ⊢ (𝜑 → 𝐵 ∈ ℂ) | |
| 4 | nfcv 2392 | . 2 ⊢ Ⅎ𝑧𝐹 | |
| 5 | 1, 2, 3, 4 | ellimc3apf 15684 | 1 ⊢ (𝜑 → (𝐶 ∈ (𝐹 limℂ 𝐵) ↔ (𝐶 ∈ ℂ ∧ ∀𝑥 ∈ ℝ+ ∃𝑦 ∈ ℝ+ ∀𝑧 ∈ 𝐴 ((𝑧 # 𝐵 ∧ (abs‘(𝑧 − 𝐵)) < 𝑦) → (abs‘((𝐹‘𝑧) − 𝐶)) < 𝑥)))) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 ↔ wb 105 ∈ wcel 2209 ∀wral 2528 ∃wrex 2529 ⊆ wss 3220 class class class wbr 4125 ⟶wf 5368 ‘cfv 5372 (class class class)co 6075 ℂcc 8167 < clt 8350 − cmin 8487 # cap 8899 ℝ+crp 10033 abscabs 11741 limℂ climc 15678 |
| 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 623 ax-in2 624 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-sep 4244 ax-pow 4306 ax-pr 4341 ax-un 4573 ax-setind 4679 ax-cnex 8260 |
| This theorem depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-fal 1408 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ne 2421 df-ral 2533 df-rex 2534 df-rab 2537 df-v 2823 df-sbc 3052 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-pw 3687 df-sn 3711 df-pr 3712 df-op 3714 df-uni 3931 df-br 4126 df-opab 4188 df-id 4433 df-xp 4775 df-rel 4776 df-cnv 4777 df-co 4778 df-dm 4779 df-rn 4780 df-iota 5332 df-fun 5374 df-fn 5375 df-f 5376 df-fv 5380 df-ov 6078 df-oprab 6079 df-mpo 6080 df-pm 6915 df-limced 15680 |
| This theorem is referenced by: limcdifap 15686 limcimolemlt 15688 limcimo 15689 limcresi 15690 cnplimcim 15691 cnplimclemr 15693 limccnpcntop 15699 dveflem 15750 |
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