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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 557 | . . . . . . . . 9 ⊢ (((𝑥 ∈ 𝐴 ∧ 𝑤 ∈ 𝐴) ∧ 𝑦 ∈ ℝ+) ↔ ((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ ℝ+) ∧ 𝑤 ∈ 𝐴)) | |
5 | 4 | anbi2i 454 | . . . . . . . 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 2543 | . . . . 5 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ ℝ+)) → ∀𝑤 ∈ 𝐴 ((abs‘(𝑥 − 𝑤)) < 𝑍 → (abs‘((𝐹‘𝑥) − (𝐹‘𝑤))) < 𝑦)) |
12 | breq2 3993 | . . . . . 6 ⊢ (𝑧 = 𝑍 → ((abs‘(𝑥 − 𝑤)) < 𝑧 ↔ (abs‘(𝑥 − 𝑤)) < 𝑍)) | |
13 | 12 | rspceaimv 2842 | . . . . 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 2552 | . . 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 13354 | . 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 2141 ∀wral 2448 ∃wrex 2449 ⊆ wss 3121 class class class wbr 3989 ⟶wf 5194 ‘cfv 5198 (class class class)co 5853 ℂcc 7772 < clt 7954 − cmin 8090 ℝ+crp 9610 abscabs 10961 –cn→ccncf 13351 |
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 609 ax-in2 610 ax-io 704 ax-5 1440 ax-7 1441 ax-gen 1442 ax-ie1 1486 ax-ie2 1487 ax-8 1497 ax-10 1498 ax-11 1499 ax-i12 1500 ax-bndl 1502 ax-4 1503 ax-17 1519 ax-i9 1523 ax-ial 1527 ax-i5r 1528 ax-13 2143 ax-14 2144 ax-ext 2152 ax-sep 4107 ax-pow 4160 ax-pr 4194 ax-un 4418 ax-setind 4521 ax-cnex 7865 |
This theorem depends on definitions: df-bi 116 df-3an 975 df-tru 1351 df-fal 1354 df-nf 1454 df-sb 1756 df-eu 2022 df-mo 2023 df-clab 2157 df-cleq 2163 df-clel 2166 df-nfc 2301 df-ne 2341 df-ral 2453 df-rex 2454 df-rab 2457 df-v 2732 df-sbc 2956 df-dif 3123 df-un 3125 df-in 3127 df-ss 3134 df-pw 3568 df-sn 3589 df-pr 3590 df-op 3592 df-uni 3797 df-br 3990 df-opab 4051 df-id 4278 df-xp 4617 df-rel 4618 df-cnv 4619 df-co 4620 df-dm 4621 df-rn 4622 df-iota 5160 df-fun 5200 df-fn 5201 df-f 5202 df-fv 5206 df-ov 5856 df-oprab 5857 df-mpo 5858 df-map 6628 df-cncf 13352 |
This theorem is referenced by: elcncf1ii 13361 cncfmptc 13376 cncfmptid 13377 addccncf 13380 negcncf 13382 |
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