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| Mirrors > Home > MPE Home > Th. List > Mathboxes > mulvval | Structured version Visualization version GIF version | ||
| Description: Value of the operation of scalar multiplication. (Contributed by Andrew Salmon, 27-Jan-2012.) |
| Ref | Expression |
|---|---|
| mulvval | ⊢ ((𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐷) → (𝐴.𝑣𝐵) = (𝑣 ∈ ℝ ↦ (𝐴 · (𝐵‘𝑣)))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elex 3477 | . 2 ⊢ (𝐴 ∈ 𝐶 → 𝐴 ∈ V) | |
| 2 | elex 3477 | . 2 ⊢ (𝐵 ∈ 𝐷 → 𝐵 ∈ V) | |
| 3 | fveq1 6868 | . . . . 5 ⊢ (𝑦 = 𝐵 → (𝑦‘𝑣) = (𝐵‘𝑣)) | |
| 4 | oveq12 7407 | . . . . 5 ⊢ ((𝑥 = 𝐴 ∧ (𝑦‘𝑣) = (𝐵‘𝑣)) → (𝑥 · (𝑦‘𝑣)) = (𝐴 · (𝐵‘𝑣))) | |
| 5 | 3, 4 | sylan2 602 | . . . 4 ⊢ ((𝑥 = 𝐴 ∧ 𝑦 = 𝐵) → (𝑥 · (𝑦‘𝑣)) = (𝐴 · (𝐵‘𝑣))) |
| 6 | 5 | mpteq2dv 5196 | . . 3 ⊢ ((𝑥 = 𝐴 ∧ 𝑦 = 𝐵) → (𝑣 ∈ ℝ ↦ (𝑥 · (𝑦‘𝑣))) = (𝑣 ∈ ℝ ↦ (𝐴 · (𝐵‘𝑣)))) |
| 7 | df-mulv 45045 | . . 3 ⊢ .𝑣 = (𝑥 ∈ V, 𝑦 ∈ V ↦ (𝑣 ∈ ℝ ↦ (𝑥 · (𝑦‘𝑣)))) | |
| 8 | reex 11166 | . . . 4 ⊢ ℝ ∈ V | |
| 9 | 8 | mptex 7209 | . . 3 ⊢ (𝑣 ∈ ℝ ↦ (𝐴 · (𝐵‘𝑣))) ∈ V |
| 10 | 6, 7, 9 | ovmpoa 7553 | . 2 ⊢ ((𝐴 ∈ V ∧ 𝐵 ∈ V) → (𝐴.𝑣𝐵) = (𝑣 ∈ ℝ ↦ (𝐴 · (𝐵‘𝑣)))) |
| 11 | 1, 2, 10 | syl2an 605 | 1 ⊢ ((𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐷) → (𝐴.𝑣𝐵) = (𝑣 ∈ ℝ ↦ (𝐴 · (𝐵‘𝑣)))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 399 = wceq 1562 ∈ wcel 2144 Vcvv 3456 ↦ cmpt 5183 ‘cfv 6523 (class class class)co 7398 ℝcr 11074 · cmul 11080 .𝑣ctimesr 45039 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1817 ax-4 1831 ax-5 1932 ax-6 1989 ax-7 2030 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2214 ax-ext 2736 ax-rep 5229 ax-sep 5248 ax-nul 5258 ax-pr 5392 ax-cnex 11131 ax-resscn 11132 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3an 1101 df-tru 1565 df-fal 1575 df-ex 1802 df-nf 1806 df-sb 2093 df-mo 2568 df-eu 2598 df-clab 2743 df-cleq 2756 df-clel 2839 df-nfc 2913 df-ne 2960 df-ral 3079 df-rex 3089 df-reu 3370 df-rab 3417 df-v 3458 df-sbc 3747 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-nul 4288 df-if 4483 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-iun 4953 df-br 5103 df-opab 5165 df-mpt 5184 df-id 5544 df-xp 5655 df-rel 5656 df-cnv 5657 df-co 5658 df-dm 5659 df-rn 5660 df-res 5661 df-ima 5662 df-iota 6479 df-fun 6525 df-fn 6526 df-f 6527 df-f1 6528 df-fo 6529 df-f1o 6530 df-fv 6531 df-ov 7401 df-oprab 7402 df-mpo 7403 df-mulv 45045 |
| This theorem is referenced by: mulvfv 45051 mulvfn 45054 |
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