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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 3463 | . 2 ⊢ (𝐴 ∈ 𝐶 → 𝐴 ∈ V) | |
| 2 | elex 3463 | . 2 ⊢ (𝐵 ∈ 𝐷 → 𝐵 ∈ V) | |
| 3 | fveq1 6843 | . . . . 5 ⊢ (𝑦 = 𝐵 → (𝑦‘𝑣) = (𝐵‘𝑣)) | |
| 4 | oveq12 7379 | . . . . 5 ⊢ ((𝑥 = 𝐴 ∧ (𝑦‘𝑣) = (𝐵‘𝑣)) → (𝑥 · (𝑦‘𝑣)) = (𝐴 · (𝐵‘𝑣))) | |
| 5 | 3, 4 | sylan2 594 | . . . 4 ⊢ ((𝑥 = 𝐴 ∧ 𝑦 = 𝐵) → (𝑥 · (𝑦‘𝑣)) = (𝐴 · (𝐵‘𝑣))) |
| 6 | 5 | mpteq2dv 5194 | . . 3 ⊢ ((𝑥 = 𝐴 ∧ 𝑦 = 𝐵) → (𝑣 ∈ ℝ ↦ (𝑥 · (𝑦‘𝑣))) = (𝑣 ∈ ℝ ↦ (𝐴 · (𝐵‘𝑣)))) |
| 7 | df-mulv 44849 | . . 3 ⊢ .𝑣 = (𝑥 ∈ V, 𝑦 ∈ V ↦ (𝑣 ∈ ℝ ↦ (𝑥 · (𝑦‘𝑣)))) | |
| 8 | reex 11131 | . . . 4 ⊢ ℝ ∈ V | |
| 9 | 8 | mptex 7181 | . . 3 ⊢ (𝑣 ∈ ℝ ↦ (𝐴 · (𝐵‘𝑣))) ∈ V |
| 10 | 6, 7, 9 | ovmpoa 7525 | . 2 ⊢ ((𝐴 ∈ V ∧ 𝐵 ∈ V) → (𝐴.𝑣𝐵) = (𝑣 ∈ ℝ ↦ (𝐴 · (𝐵‘𝑣)))) |
| 11 | 1, 2, 10 | syl2an 597 | 1 ⊢ ((𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐷) → (𝐴.𝑣𝐵) = (𝑣 ∈ ℝ ↦ (𝐴 · (𝐵‘𝑣)))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 = wceq 1542 ∈ wcel 2114 Vcvv 3442 ↦ cmpt 5181 ‘cfv 6502 (class class class)co 7370 ℝcr 11039 · cmul 11045 .𝑣ctimesr 44843 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-rep 5226 ax-sep 5245 ax-nul 5255 ax-pr 5381 ax-cnex 11096 ax-resscn 11097 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-ral 3053 df-rex 3063 df-reu 3353 df-rab 3402 df-v 3444 df-sbc 3743 df-csb 3852 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-nul 4288 df-if 4482 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-iun 4950 df-br 5101 df-opab 5163 df-mpt 5182 df-id 5529 df-xp 5640 df-rel 5641 df-cnv 5642 df-co 5643 df-dm 5644 df-rn 5645 df-res 5646 df-ima 5647 df-iota 6458 df-fun 6504 df-fn 6505 df-f 6506 df-f1 6507 df-fo 6508 df-f1o 6509 df-fv 6510 df-ov 7373 df-oprab 7374 df-mpo 7375 df-mulv 44849 |
| This theorem is referenced by: mulvfv 44855 mulvfn 44858 |
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