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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 3484 | . 2 ⊢ (𝐴 ∈ 𝐶 → 𝐴 ∈ V) | |
| 2 | elex 3484 | . 2 ⊢ (𝐵 ∈ 𝐷 → 𝐵 ∈ V) | |
| 3 | fveq1 6881 | . . . . 5 ⊢ (𝑦 = 𝐵 → (𝑦‘𝑣) = (𝐵‘𝑣)) | |
| 4 | oveq12 7420 | . . . . 5 ⊢ ((𝑥 = 𝐴 ∧ (𝑦‘𝑣) = (𝐵‘𝑣)) → (𝑥 · (𝑦‘𝑣)) = (𝐴 · (𝐵‘𝑣))) | |
| 5 | 3, 4 | sylan2 604 | . . . 4 ⊢ ((𝑥 = 𝐴 ∧ 𝑦 = 𝐵) → (𝑥 · (𝑦‘𝑣)) = (𝐴 · (𝐵‘𝑣))) |
| 6 | 5 | mpteq2dv 5209 | . . 3 ⊢ ((𝑥 = 𝐴 ∧ 𝑦 = 𝐵) → (𝑣 ∈ ℝ ↦ (𝑥 · (𝑦‘𝑣))) = (𝑣 ∈ ℝ ↦ (𝐴 · (𝐵‘𝑣)))) |
| 7 | df-mulv 45099 | . . 3 ⊢ .𝑣 = (𝑥 ∈ V, 𝑦 ∈ V ↦ (𝑣 ∈ ℝ ↦ (𝑥 · (𝑦‘𝑣)))) | |
| 8 | reex 11191 | . . . 4 ⊢ ℝ ∈ V | |
| 9 | 8 | mptex 7222 | . . 3 ⊢ (𝑣 ∈ ℝ ↦ (𝐴 · (𝐵‘𝑣))) ∈ V |
| 10 | 6, 7, 9 | ovmpoa 7566 | . 2 ⊢ ((𝐴 ∈ V ∧ 𝐵 ∈ V) → (𝐴.𝑣𝐵) = (𝑣 ∈ ℝ ↦ (𝐴 · (𝐵‘𝑣)))) |
| 11 | 1, 2, 10 | syl2an 607 | 1 ⊢ ((𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐷) → (𝐴.𝑣𝐵) = (𝑣 ∈ ℝ ↦ (𝐴 · (𝐵‘𝑣)))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 400 = wceq 1567 ∈ wcel 2149 Vcvv 3463 ↦ cmpt 5196 ‘cfv 6537 (class class class)co 7411 ℝcr 11099 · cmul 11105 .𝑣ctimesr 45093 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-10 2182 ax-11 2198 ax-12 2219 ax-ext 2741 ax-rep 5242 ax-sep 5261 ax-nul 5271 ax-pr 5405 ax-cnex 11156 ax-resscn 11157 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1103 df-tru 1570 df-fal 1580 df-ex 1807 df-nf 1811 df-sb 2098 df-mo 2573 df-eu 2603 df-clab 2748 df-cleq 2761 df-clel 2844 df-nfc 2918 df-ne 2965 df-ral 3086 df-rex 3096 df-reu 3377 df-rab 3424 df-v 3465 df-sbc 3754 df-csb 3862 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-nul 4295 df-if 4493 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4877 df-iun 4962 df-br 5114 df-opab 5178 df-mpt 5197 df-id 5557 df-xp 5668 df-rel 5669 df-cnv 5670 df-co 5671 df-dm 5672 df-rn 5673 df-res 5674 df-ima 5675 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-ov 7414 df-oprab 7415 df-mpo 7416 df-mulv 45099 |
| This theorem is referenced by: mulvfv 45105 mulvfn 45108 |
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