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| Mirrors > Home > MPE Home > Th. List > Mathboxes > ofsubid | Structured version Visualization version GIF version | ||
| Description: Function analogue of subid 11488. (Contributed by Steve Rodriguez, 5-Nov-2015.) |
| Ref | Expression |
|---|---|
| ofsubid | ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℂ) → (𝐹 ∘f − 𝐹) = (𝐴 × {0})) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | simpl 488 | . 2 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℂ) → 𝐴 ∈ 𝑉) | |
| 2 | ffn 6709 | . . 3 ⊢ (𝐹:𝐴⟶ℂ → 𝐹 Fn 𝐴) | |
| 3 | 2 | adantl 487 | . 2 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℂ) → 𝐹 Fn 𝐴) |
| 4 | c0ex 11211 | . . . 4 ⊢ 0 ∈ V | |
| 5 | 4 | fconst 6768 | . . 3 ⊢ (𝐴 × {0}):𝐴⟶{0} |
| 6 | ffn 6709 | . . 3 ⊢ ((𝐴 × {0}):𝐴⟶{0} → (𝐴 × {0}) Fn 𝐴) | |
| 7 | 5, 6 | mp1i 14 | . 2 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℂ) → (𝐴 × {0}) Fn 𝐴) |
| 8 | eqidd 2766 | . 2 ⊢ (((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℂ) ∧ 𝑥 ∈ 𝐴) → (𝐹‘𝑥) = (𝐹‘𝑥)) | |
| 9 | ffvelcdm 7080 | . . . . 5 ⊢ ((𝐹:𝐴⟶ℂ ∧ 𝑥 ∈ 𝐴) → (𝐹‘𝑥) ∈ ℂ) | |
| 10 | 9 | subidd 11568 | . . . 4 ⊢ ((𝐹:𝐴⟶ℂ ∧ 𝑥 ∈ 𝐴) → ((𝐹‘𝑥) − (𝐹‘𝑥)) = 0) |
| 11 | 10 | adantll 727 | . . 3 ⊢ (((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℂ) ∧ 𝑥 ∈ 𝐴) → ((𝐹‘𝑥) − (𝐹‘𝑥)) = 0) |
| 12 | 4 | fvconst2 7206 | . . . 4 ⊢ (𝑥 ∈ 𝐴 → ((𝐴 × {0})‘𝑥) = 0) |
| 13 | 12 | adantl 487 | . . 3 ⊢ (((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℂ) ∧ 𝑥 ∈ 𝐴) → ((𝐴 × {0})‘𝑥) = 0) |
| 14 | 11, 13 | eqtr4d 2803 | . 2 ⊢ (((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℂ) ∧ 𝑥 ∈ 𝐴) → ((𝐹‘𝑥) − (𝐹‘𝑥)) = ((𝐴 × {0})‘𝑥)) |
| 15 | 1, 3, 3, 7, 8, 8, 14 | offveq 7706 | 1 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐹:𝐴⟶ℂ) → (𝐹 ∘f − 𝐹) = (𝐴 × {0})) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 = wceq 1570 ∈ wcel 2146 {csn 4591 × cxp 5661 Fn wfn 6535 ⟶wf 6536 ‘cfv 6540 (class class class)co 7416 ∘f cof 7678 ℂcc 11109 0cc0 11111 − cmin 11452 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2737 ax-rep 5240 ax-sep 5259 ax-nul 5271 ax-pow 5338 ax-pr 5406 ax-un 7738 ax-resscn 11168 ax-1cn 11169 ax-icn 11170 ax-addcl 11171 ax-addrcl 11172 ax-mulcl 11173 ax-mulrcl 11174 ax-mulcom 11175 ax-addass 11176 ax-mulass 11177 ax-distr 11178 ax-i2m1 11179 ax-1ne0 11180 ax-1rid 11181 ax-rnegex 11182 ax-rrecex 11183 ax-cnre 11184 ax-pre-lttri 11185 ax-pre-lttrn 11186 ax-pre-ltadd 11187 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-nel 3067 df-ral 3082 df-rex 3092 df-reu 3372 df-rab 3419 df-v 3459 df-sbc 3747 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-nul 4287 df-if 4490 df-pw 4566 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4875 df-iun 4960 df-br 5112 df-opab 5176 df-mpt 5195 df-id 5558 df-po 5571 df-so 5572 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 df-iota 6496 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-riota 7373 df-ov 7419 df-oprab 7420 df-mpo 7421 df-of 7680 df-er 8696 df-en 8946 df-dom 8947 df-sdom 8948 df-pnf 11256 df-mnf 11257 df-ltxr 11259 df-sub 11454 |
| This theorem is used by: expgrowth 45078 |
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