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Mirrors > Home > MPE Home > Th. List > Mathboxes > ofdivrec | Structured version Visualization version GIF version |
Description: Function analogue of divrec 11579, a division analogue of ofnegsub 11901. (Contributed by Steve Rodriguez, 3-Nov-2015.) |
Ref | Expression |
---|---|
ofdivrec | ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℂ ∧ 𝐺:𝐴⟶(ℂ ∖ {0})) → (𝐹 ∘f · ((𝐴 × {1}) ∘f / 𝐺)) = (𝐹 ∘f / 𝐺)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | simp1 1134 | . 2 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℂ ∧ 𝐺:𝐴⟶(ℂ ∖ {0})) → 𝐴 ∈ 𝑉) | |
2 | simp2 1135 | . . 3 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℂ ∧ 𝐺:𝐴⟶(ℂ ∖ {0})) → 𝐹:𝐴⟶ℂ) | |
3 | 2 | ffnd 6585 | . 2 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℂ ∧ 𝐺:𝐴⟶(ℂ ∖ {0})) → 𝐹 Fn 𝐴) |
4 | ax-1cn 10860 | . . . 4 ⊢ 1 ∈ ℂ | |
5 | fnconstg 6646 | . . . 4 ⊢ (1 ∈ ℂ → (𝐴 × {1}) Fn 𝐴) | |
6 | 4, 5 | mp1i 13 | . . 3 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℂ ∧ 𝐺:𝐴⟶(ℂ ∖ {0})) → (𝐴 × {1}) Fn 𝐴) |
7 | simp3 1136 | . . . 4 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℂ ∧ 𝐺:𝐴⟶(ℂ ∖ {0})) → 𝐺:𝐴⟶(ℂ ∖ {0})) | |
8 | 7 | ffnd 6585 | . . 3 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℂ ∧ 𝐺:𝐴⟶(ℂ ∖ {0})) → 𝐺 Fn 𝐴) |
9 | inidm 4149 | . . 3 ⊢ (𝐴 ∩ 𝐴) = 𝐴 | |
10 | 6, 8, 1, 1, 9 | offn 7524 | . 2 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℂ ∧ 𝐺:𝐴⟶(ℂ ∖ {0})) → ((𝐴 × {1}) ∘f / 𝐺) Fn 𝐴) |
11 | 3, 8, 1, 1, 9 | offn 7524 | . 2 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℂ ∧ 𝐺:𝐴⟶(ℂ ∖ {0})) → (𝐹 ∘f / 𝐺) Fn 𝐴) |
12 | eqidd 2739 | . 2 ⊢ (((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℂ ∧ 𝐺:𝐴⟶(ℂ ∖ {0})) ∧ 𝑥 ∈ 𝐴) → (𝐹‘𝑥) = (𝐹‘𝑥)) | |
13 | 1cnd 10901 | . . 3 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℂ ∧ 𝐺:𝐴⟶(ℂ ∖ {0})) → 1 ∈ ℂ) | |
14 | eqidd 2739 | . . 3 ⊢ (((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℂ ∧ 𝐺:𝐴⟶(ℂ ∖ {0})) ∧ 𝑥 ∈ 𝐴) → (𝐺‘𝑥) = (𝐺‘𝑥)) | |
15 | 1, 13, 8, 14 | ofc1 7537 | . 2 ⊢ (((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℂ ∧ 𝐺:𝐴⟶(ℂ ∖ {0})) ∧ 𝑥 ∈ 𝐴) → (((𝐴 × {1}) ∘f / 𝐺)‘𝑥) = (1 / (𝐺‘𝑥))) |
16 | ffvelrn 6941 | . . . . 5 ⊢ ((𝐹:𝐴⟶ℂ ∧ 𝑥 ∈ 𝐴) → (𝐹‘𝑥) ∈ ℂ) | |
17 | 2, 16 | sylan 579 | . . . 4 ⊢ (((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℂ ∧ 𝐺:𝐴⟶(ℂ ∖ {0})) ∧ 𝑥 ∈ 𝐴) → (𝐹‘𝑥) ∈ ℂ) |
18 | ffvelrn 6941 | . . . . . 6 ⊢ ((𝐺:𝐴⟶(ℂ ∖ {0}) ∧ 𝑥 ∈ 𝐴) → (𝐺‘𝑥) ∈ (ℂ ∖ {0})) | |
19 | eldifsn 4717 | . . . . . 6 ⊢ ((𝐺‘𝑥) ∈ (ℂ ∖ {0}) ↔ ((𝐺‘𝑥) ∈ ℂ ∧ (𝐺‘𝑥) ≠ 0)) | |
20 | 18, 19 | sylib 217 | . . . . 5 ⊢ ((𝐺:𝐴⟶(ℂ ∖ {0}) ∧ 𝑥 ∈ 𝐴) → ((𝐺‘𝑥) ∈ ℂ ∧ (𝐺‘𝑥) ≠ 0)) |
21 | 7, 20 | sylan 579 | . . . 4 ⊢ (((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℂ ∧ 𝐺:𝐴⟶(ℂ ∖ {0})) ∧ 𝑥 ∈ 𝐴) → ((𝐺‘𝑥) ∈ ℂ ∧ (𝐺‘𝑥) ≠ 0)) |
22 | divrec 11579 | . . . . . 6 ⊢ (((𝐹‘𝑥) ∈ ℂ ∧ (𝐺‘𝑥) ∈ ℂ ∧ (𝐺‘𝑥) ≠ 0) → ((𝐹‘𝑥) / (𝐺‘𝑥)) = ((𝐹‘𝑥) · (1 / (𝐺‘𝑥)))) | |
23 | 22 | eqcomd 2744 | . . . . 5 ⊢ (((𝐹‘𝑥) ∈ ℂ ∧ (𝐺‘𝑥) ∈ ℂ ∧ (𝐺‘𝑥) ≠ 0) → ((𝐹‘𝑥) · (1 / (𝐺‘𝑥))) = ((𝐹‘𝑥) / (𝐺‘𝑥))) |
24 | 23 | 3expb 1118 | . . . 4 ⊢ (((𝐹‘𝑥) ∈ ℂ ∧ ((𝐺‘𝑥) ∈ ℂ ∧ (𝐺‘𝑥) ≠ 0)) → ((𝐹‘𝑥) · (1 / (𝐺‘𝑥))) = ((𝐹‘𝑥) / (𝐺‘𝑥))) |
25 | 17, 21, 24 | syl2anc 583 | . . 3 ⊢ (((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℂ ∧ 𝐺:𝐴⟶(ℂ ∖ {0})) ∧ 𝑥 ∈ 𝐴) → ((𝐹‘𝑥) · (1 / (𝐺‘𝑥))) = ((𝐹‘𝑥) / (𝐺‘𝑥))) |
26 | 3, 8, 1, 1, 9, 12, 14 | ofval 7522 | . . 3 ⊢ (((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℂ ∧ 𝐺:𝐴⟶(ℂ ∖ {0})) ∧ 𝑥 ∈ 𝐴) → ((𝐹 ∘f / 𝐺)‘𝑥) = ((𝐹‘𝑥) / (𝐺‘𝑥))) |
27 | 25, 26 | eqtr4d 2781 | . 2 ⊢ (((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℂ ∧ 𝐺:𝐴⟶(ℂ ∖ {0})) ∧ 𝑥 ∈ 𝐴) → ((𝐹‘𝑥) · (1 / (𝐺‘𝑥))) = ((𝐹 ∘f / 𝐺)‘𝑥)) |
28 | 1, 3, 10, 11, 12, 15, 27 | offveq 7535 | 1 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℂ ∧ 𝐺:𝐴⟶(ℂ ∖ {0})) → (𝐹 ∘f · ((𝐴 × {1}) ∘f / 𝐺)) = (𝐹 ∘f / 𝐺)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 395 ∧ w3a 1085 = wceq 1539 ∈ wcel 2108 ≠ wne 2942 ∖ cdif 3880 {csn 4558 × cxp 5578 Fn wfn 6413 ⟶wf 6414 ‘cfv 6418 (class class class)co 7255 ∘f cof 7509 ℂcc 10800 0cc0 10802 1c1 10803 · cmul 10807 / cdiv 11562 |
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-rep 5205 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 ax-un 7566 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-rmo 3071 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-iun 4923 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-of 7511 df-er 8456 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-div 11563 |
This theorem is referenced by: (None) |
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