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Mirrors > Home > ILE Home > Th. List > elcncf1di | GIF version |
Description: Membership in the set of continuous complex functions from 𝐴 to 𝐵. (Contributed by Paul Chapman, 26-Nov-2007.) |
Ref | Expression |
---|---|
elcncf1d.1 | ⊢ (𝜑 → 𝐹:𝐴⟶𝐵) |
elcncf1d.2 | ⊢ (𝜑 → ((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ ℝ+) → 𝑍 ∈ ℝ+)) |
elcncf1d.3 | ⊢ (𝜑 → (((𝑥 ∈ 𝐴 ∧ 𝑤 ∈ 𝐴) ∧ 𝑦 ∈ ℝ+) → ((abs‘(𝑥 − 𝑤)) < 𝑍 → (abs‘((𝐹‘𝑥) − (𝐹‘𝑤))) < 𝑦))) |
Ref | Expression |
---|---|
elcncf1di | ⊢ (𝜑 → ((𝐴 ⊆ ℂ ∧ 𝐵 ⊆ ℂ) → 𝐹 ∈ (𝐴–cn→𝐵))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elcncf1d.1 | . . 3 ⊢ (𝜑 → 𝐹:𝐴⟶𝐵) | |
2 | elcncf1d.2 | . . . . . 6 ⊢ (𝜑 → ((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ ℝ+) → 𝑍 ∈ ℝ+)) | |
3 | 2 | imp 123 | . . . . 5 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ ℝ+)) → 𝑍 ∈ ℝ+) |
4 | an32 552 | . . . . . . . . 9 ⊢ (((𝑥 ∈ 𝐴 ∧ 𝑤 ∈ 𝐴) ∧ 𝑦 ∈ ℝ+) ↔ ((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ ℝ+) ∧ 𝑤 ∈ 𝐴)) | |
5 | 4 | anbi2i 453 | . . . . . . . 8 ⊢ ((𝜑 ∧ ((𝑥 ∈ 𝐴 ∧ 𝑤 ∈ 𝐴) ∧ 𝑦 ∈ ℝ+)) ↔ (𝜑 ∧ ((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ ℝ+) ∧ 𝑤 ∈ 𝐴))) |
6 | anass 399 | . . . . . . . 8 ⊢ (((𝜑 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ ℝ+)) ∧ 𝑤 ∈ 𝐴) ↔ (𝜑 ∧ ((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ ℝ+) ∧ 𝑤 ∈ 𝐴))) | |
7 | 5, 6 | bitr4i 186 | . . . . . . 7 ⊢ ((𝜑 ∧ ((𝑥 ∈ 𝐴 ∧ 𝑤 ∈ 𝐴) ∧ 𝑦 ∈ ℝ+)) ↔ ((𝜑 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ ℝ+)) ∧ 𝑤 ∈ 𝐴)) |
8 | elcncf1d.3 | . . . . . . . 8 ⊢ (𝜑 → (((𝑥 ∈ 𝐴 ∧ 𝑤 ∈ 𝐴) ∧ 𝑦 ∈ ℝ+) → ((abs‘(𝑥 − 𝑤)) < 𝑍 → (abs‘((𝐹‘𝑥) − (𝐹‘𝑤))) < 𝑦))) | |
9 | 8 | imp 123 | . . . . . . 7 ⊢ ((𝜑 ∧ ((𝑥 ∈ 𝐴 ∧ 𝑤 ∈ 𝐴) ∧ 𝑦 ∈ ℝ+)) → ((abs‘(𝑥 − 𝑤)) < 𝑍 → (abs‘((𝐹‘𝑥) − (𝐹‘𝑤))) < 𝑦)) |
10 | 7, 9 | sylbir 134 | . . . . . 6 ⊢ (((𝜑 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ ℝ+)) ∧ 𝑤 ∈ 𝐴) → ((abs‘(𝑥 − 𝑤)) < 𝑍 → (abs‘((𝐹‘𝑥) − (𝐹‘𝑤))) < 𝑦)) |
11 | 10 | ralrimiva 2539 | . . . . 5 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ ℝ+)) → ∀𝑤 ∈ 𝐴 ((abs‘(𝑥 − 𝑤)) < 𝑍 → (abs‘((𝐹‘𝑥) − (𝐹‘𝑤))) < 𝑦)) |
12 | breq2 3986 | . . . . . 6 ⊢ (𝑧 = 𝑍 → ((abs‘(𝑥 − 𝑤)) < 𝑧 ↔ (abs‘(𝑥 − 𝑤)) < 𝑍)) | |
13 | 12 | rspceaimv 2838 | . . . . 5 ⊢ ((𝑍 ∈ ℝ+ ∧ ∀𝑤 ∈ 𝐴 ((abs‘(𝑥 − 𝑤)) < 𝑍 → (abs‘((𝐹‘𝑥) − (𝐹‘𝑤))) < 𝑦)) → ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝐴 ((abs‘(𝑥 − 𝑤)) < 𝑧 → (abs‘((𝐹‘𝑥) − (𝐹‘𝑤))) < 𝑦)) |
14 | 3, 11, 13 | syl2anc 409 | . . . 4 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ ℝ+)) → ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝐴 ((abs‘(𝑥 − 𝑤)) < 𝑧 → (abs‘((𝐹‘𝑥) − (𝐹‘𝑤))) < 𝑦)) |
15 | 14 | ralrimivva 2548 | . . 3 ⊢ (𝜑 → ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ ℝ+ ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝐴 ((abs‘(𝑥 − 𝑤)) < 𝑧 → (abs‘((𝐹‘𝑥) − (𝐹‘𝑤))) < 𝑦)) |
16 | 1, 15 | jca 304 | . 2 ⊢ (𝜑 → (𝐹:𝐴⟶𝐵 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ ℝ+ ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝐴 ((abs‘(𝑥 − 𝑤)) < 𝑧 → (abs‘((𝐹‘𝑥) − (𝐹‘𝑤))) < 𝑦))) |
17 | elcncf 13200 | . 2 ⊢ ((𝐴 ⊆ ℂ ∧ 𝐵 ⊆ ℂ) → (𝐹 ∈ (𝐴–cn→𝐵) ↔ (𝐹:𝐴⟶𝐵 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ ℝ+ ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝐴 ((abs‘(𝑥 − 𝑤)) < 𝑧 → (abs‘((𝐹‘𝑥) − (𝐹‘𝑤))) < 𝑦)))) | |
18 | 16, 17 | syl5ibrcom 156 | 1 ⊢ (𝜑 → ((𝐴 ⊆ ℂ ∧ 𝐵 ⊆ ℂ) → 𝐹 ∈ (𝐴–cn→𝐵))) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∧ wa 103 ∈ wcel 2136 ∀wral 2444 ∃wrex 2445 ⊆ wss 3116 class class class wbr 3982 ⟶wf 5184 ‘cfv 5188 (class class class)co 5842 ℂcc 7751 < clt 7933 − cmin 8069 ℝ+crp 9589 abscabs 10939 –cn→ccncf 13197 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 604 ax-in2 605 ax-io 699 ax-5 1435 ax-7 1436 ax-gen 1437 ax-ie1 1481 ax-ie2 1482 ax-8 1492 ax-10 1493 ax-11 1494 ax-i12 1495 ax-bndl 1497 ax-4 1498 ax-17 1514 ax-i9 1518 ax-ial 1522 ax-i5r 1523 ax-13 2138 ax-14 2139 ax-ext 2147 ax-sep 4100 ax-pow 4153 ax-pr 4187 ax-un 4411 ax-setind 4514 ax-cnex 7844 |
This theorem depends on definitions: df-bi 116 df-3an 970 df-tru 1346 df-fal 1349 df-nf 1449 df-sb 1751 df-eu 2017 df-mo 2018 df-clab 2152 df-cleq 2158 df-clel 2161 df-nfc 2297 df-ne 2337 df-ral 2449 df-rex 2450 df-rab 2453 df-v 2728 df-sbc 2952 df-dif 3118 df-un 3120 df-in 3122 df-ss 3129 df-pw 3561 df-sn 3582 df-pr 3583 df-op 3585 df-uni 3790 df-br 3983 df-opab 4044 df-id 4271 df-xp 4610 df-rel 4611 df-cnv 4612 df-co 4613 df-dm 4614 df-rn 4615 df-iota 5153 df-fun 5190 df-fn 5191 df-f 5192 df-fv 5196 df-ov 5845 df-oprab 5846 df-mpo 5847 df-map 6616 df-cncf 13198 |
This theorem is referenced by: elcncf1ii 13207 cncfmptc 13222 cncfmptid 13223 addccncf 13226 negcncf 13228 |
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