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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 3514 | . 2 ⊢ (𝐴 ∈ 𝐶 → 𝐴 ∈ V) | |
2 | elex 3514 | . 2 ⊢ (𝐵 ∈ 𝐷 → 𝐵 ∈ V) | |
3 | fveq1 6671 | . . . . 5 ⊢ (𝑦 = 𝐵 → (𝑦‘𝑣) = (𝐵‘𝑣)) | |
4 | oveq12 7167 | . . . . 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 5164 | . . 3 ⊢ ((𝑥 = 𝐴 ∧ 𝑦 = 𝐵) → (𝑣 ∈ ℝ ↦ (𝑥 · (𝑦‘𝑣))) = (𝑣 ∈ ℝ ↦ (𝐴 · (𝐵‘𝑣)))) |
7 | df-mulv 40804 | . . 3 ⊢ .𝑣 = (𝑥 ∈ V, 𝑦 ∈ V ↦ (𝑣 ∈ ℝ ↦ (𝑥 · (𝑦‘𝑣)))) | |
8 | reex 10630 | . . . 4 ⊢ ℝ ∈ V | |
9 | 8 | mptex 6988 | . . 3 ⊢ (𝑣 ∈ ℝ ↦ (𝐴 · (𝐵‘𝑣))) ∈ V |
10 | 6, 7, 9 | ovmpoa 7307 | . 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 398 = wceq 1537 ∈ wcel 2114 Vcvv 3496 ↦ cmpt 5148 ‘cfv 6357 (class class class)co 7158 ℝcr 10538 · cmul 10544 .𝑣ctimesr 40798 |
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 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2795 ax-rep 5192 ax-sep 5205 ax-nul 5212 ax-pr 5332 ax-cnex 10595 ax-resscn 10596 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-mo 2622 df-eu 2654 df-clab 2802 df-cleq 2816 df-clel 2895 df-nfc 2965 df-ne 3019 df-ral 3145 df-rex 3146 df-reu 3147 df-rab 3149 df-v 3498 df-sbc 3775 df-csb 3886 df-dif 3941 df-un 3943 df-in 3945 df-ss 3954 df-nul 4294 df-if 4470 df-sn 4570 df-pr 4572 df-op 4576 df-uni 4841 df-iun 4923 df-br 5069 df-opab 5131 df-mpt 5149 df-id 5462 df-xp 5563 df-rel 5564 df-cnv 5565 df-co 5566 df-dm 5567 df-rn 5568 df-res 5569 df-ima 5570 df-iota 6316 df-fun 6359 df-fn 6360 df-f 6361 df-f1 6362 df-fo 6363 df-f1o 6364 df-fv 6365 df-ov 7161 df-oprab 7162 df-mpo 7163 df-mulv 40804 |
This theorem is referenced by: mulvfv 40810 mulvfn 40813 |
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