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| Mirrors > Home > MPE Home > Th. List > Mathboxes > mulvfn | Structured version Visualization version GIF version | ||
| Description: Scalar multiplication producees a function. (Contributed by Andrew Salmon, 27-Jan-2012.) |
| Ref | Expression |
|---|---|
| mulvfn | ⊢ ((𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐷) → (𝐴.𝑣𝐵) Fn ℝ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ovex 7379 | . . 3 ⊢ (𝐴 · (𝐵‘𝑥)) ∈ V | |
| 2 | eqid 2731 | . . 3 ⊢ (𝑥 ∈ ℝ ↦ (𝐴 · (𝐵‘𝑥))) = (𝑥 ∈ ℝ ↦ (𝐴 · (𝐵‘𝑥))) | |
| 3 | 1, 2 | fnmpti 6624 | . 2 ⊢ (𝑥 ∈ ℝ ↦ (𝐴 · (𝐵‘𝑥))) Fn ℝ |
| 4 | mulvval 44499 | . . 3 ⊢ ((𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐷) → (𝐴.𝑣𝐵) = (𝑥 ∈ ℝ ↦ (𝐴 · (𝐵‘𝑥)))) | |
| 5 | 4 | fneq1d 6574 | . 2 ⊢ ((𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐷) → ((𝐴.𝑣𝐵) Fn ℝ ↔ (𝑥 ∈ ℝ ↦ (𝐴 · (𝐵‘𝑥))) Fn ℝ)) |
| 6 | 3, 5 | mpbiri 258 | 1 ⊢ ((𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐷) → (𝐴.𝑣𝐵) Fn ℝ) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 ∈ wcel 2111 ↦ cmpt 5172 Fn wfn 6476 ‘cfv 6481 (class class class)co 7346 ℝcr 11002 · cmul 11008 .𝑣ctimesr 44490 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2113 ax-9 2121 ax-10 2144 ax-11 2160 ax-12 2180 ax-ext 2703 ax-rep 5217 ax-sep 5234 ax-nul 5244 ax-pr 5370 ax-cnex 11059 ax-resscn 11060 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2535 df-eu 2564 df-clab 2710 df-cleq 2723 df-clel 2806 df-nfc 2881 df-ne 2929 df-ral 3048 df-rex 3057 df-reu 3347 df-rab 3396 df-v 3438 df-sbc 3742 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-nul 4284 df-if 4476 df-sn 4577 df-pr 4579 df-op 4583 df-uni 4860 df-iun 4943 df-br 5092 df-opab 5154 df-mpt 5173 df-id 5511 df-xp 5622 df-rel 5623 df-cnv 5624 df-co 5625 df-dm 5626 df-rn 5627 df-res 5628 df-ima 5629 df-iota 6437 df-fun 6483 df-fn 6484 df-f 6485 df-f1 6486 df-fo 6487 df-f1o 6488 df-fv 6489 df-ov 7349 df-oprab 7350 df-mpo 7351 df-mulv 44496 |
| This theorem is referenced by: (None) |
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