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Mirrors > Home > MPE Home > Th. List > Mathboxes > ofdivrec | Structured version Visualization version GIF version |
Description: Function analogue of divrec 11649, a division analogue of ofnegsub 11971. (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 1135 | . 2 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℂ ∧ 𝐺:𝐴⟶(ℂ ∖ {0})) → 𝐴 ∈ 𝑉) | |
2 | simp2 1136 | . . 3 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℂ ∧ 𝐺:𝐴⟶(ℂ ∖ {0})) → 𝐹:𝐴⟶ℂ) | |
3 | 2 | ffnd 6601 | . 2 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℂ ∧ 𝐺:𝐴⟶(ℂ ∖ {0})) → 𝐹 Fn 𝐴) |
4 | ax-1cn 10929 | . . . 4 ⊢ 1 ∈ ℂ | |
5 | fnconstg 6662 | . . . 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 1137 | . . . 4 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℂ ∧ 𝐺:𝐴⟶(ℂ ∖ {0})) → 𝐺:𝐴⟶(ℂ ∖ {0})) | |
8 | 7 | ffnd 6601 | . . 3 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℂ ∧ 𝐺:𝐴⟶(ℂ ∖ {0})) → 𝐺 Fn 𝐴) |
9 | inidm 4152 | . . 3 ⊢ (𝐴 ∩ 𝐴) = 𝐴 | |
10 | 6, 8, 1, 1, 9 | offn 7546 | . 2 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℂ ∧ 𝐺:𝐴⟶(ℂ ∖ {0})) → ((𝐴 × {1}) ∘f / 𝐺) Fn 𝐴) |
11 | 3, 8, 1, 1, 9 | offn 7546 | . 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 10970 | . . 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 7559 | . 2 ⊢ (((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℂ ∧ 𝐺:𝐴⟶(ℂ ∖ {0})) ∧ 𝑥 ∈ 𝐴) → (((𝐴 × {1}) ∘f / 𝐺)‘𝑥) = (1 / (𝐺‘𝑥))) |
16 | ffvelrn 6959 | . . . . 5 ⊢ ((𝐹:𝐴⟶ℂ ∧ 𝑥 ∈ 𝐴) → (𝐹‘𝑥) ∈ ℂ) | |
17 | 2, 16 | sylan 580 | . . . 4 ⊢ (((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℂ ∧ 𝐺:𝐴⟶(ℂ ∖ {0})) ∧ 𝑥 ∈ 𝐴) → (𝐹‘𝑥) ∈ ℂ) |
18 | ffvelrn 6959 | . . . . . 6 ⊢ ((𝐺:𝐴⟶(ℂ ∖ {0}) ∧ 𝑥 ∈ 𝐴) → (𝐺‘𝑥) ∈ (ℂ ∖ {0})) | |
19 | eldifsn 4720 | . . . . . 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 580 | . . . 4 ⊢ (((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℂ ∧ 𝐺:𝐴⟶(ℂ ∖ {0})) ∧ 𝑥 ∈ 𝐴) → ((𝐺‘𝑥) ∈ ℂ ∧ (𝐺‘𝑥) ≠ 0)) |
22 | divrec 11649 | . . . . . 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 1119 | . . . 4 ⊢ (((𝐹‘𝑥) ∈ ℂ ∧ ((𝐺‘𝑥) ∈ ℂ ∧ (𝐺‘𝑥) ≠ 0)) → ((𝐹‘𝑥) · (1 / (𝐺‘𝑥))) = ((𝐹‘𝑥) / (𝐺‘𝑥))) |
25 | 17, 21, 24 | syl2anc 584 | . . 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 7544 | . . 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 7557 | 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 396 ∧ w3a 1086 = wceq 1539 ∈ wcel 2106 ≠ wne 2943 ∖ cdif 3884 {csn 4561 × cxp 5587 Fn wfn 6428 ⟶wf 6429 ‘cfv 6433 (class class class)co 7275 ∘f cof 7531 ℂcc 10869 0cc0 10871 1c1 10872 · cmul 10876 / cdiv 11632 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2709 ax-rep 5209 ax-sep 5223 ax-nul 5230 ax-pow 5288 ax-pr 5352 ax-un 7588 ax-resscn 10928 ax-1cn 10929 ax-icn 10930 ax-addcl 10931 ax-addrcl 10932 ax-mulcl 10933 ax-mulrcl 10934 ax-mulcom 10935 ax-addass 10936 ax-mulass 10937 ax-distr 10938 ax-i2m1 10939 ax-1ne0 10940 ax-1rid 10941 ax-rnegex 10942 ax-rrecex 10943 ax-cnre 10944 ax-pre-lttri 10945 ax-pre-lttrn 10946 ax-pre-ltadd 10947 ax-pre-mulgt0 10948 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2889 df-ne 2944 df-nel 3050 df-ral 3069 df-rex 3070 df-rmo 3071 df-reu 3072 df-rab 3073 df-v 3434 df-sbc 3717 df-csb 3833 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-nul 4257 df-if 4460 df-pw 4535 df-sn 4562 df-pr 4564 df-op 4568 df-uni 4840 df-iun 4926 df-br 5075 df-opab 5137 df-mpt 5158 df-id 5489 df-po 5503 df-so 5504 df-xp 5595 df-rel 5596 df-cnv 5597 df-co 5598 df-dm 5599 df-rn 5600 df-res 5601 df-ima 5602 df-iota 6391 df-fun 6435 df-fn 6436 df-f 6437 df-f1 6438 df-fo 6439 df-f1o 6440 df-fv 6441 df-riota 7232 df-ov 7278 df-oprab 7279 df-mpo 7280 df-of 7533 df-er 8498 df-en 8734 df-dom 8735 df-sdom 8736 df-pnf 11011 df-mnf 11012 df-xr 11013 df-ltxr 11014 df-le 11015 df-sub 11207 df-neg 11208 df-div 11633 |
This theorem is referenced by: (None) |
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