| Mathbox for Andrew Salmon |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > Mathboxes > mulvfv | Structured version Visualization version GIF version | ||
| Description: Scalar multiplication at a value. (Contributed by Andrew Salmon, 27-Jan-2012.) |
| Ref | Expression |
|---|---|
| mulvfv | ⊢ ((𝐴 ∈ 𝐸 ∧ 𝐵 ∈ 𝐷 ∧ 𝐶 ∈ ℝ) → ((𝐴.𝑣𝐵)‘𝐶) = (𝐴 · (𝐵‘𝐶))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | mulvval 44441 | . . . 4 ⊢ ((𝐴 ∈ 𝐸 ∧ 𝐵 ∈ 𝐷) → (𝐴.𝑣𝐵) = (𝑥 ∈ ℝ ↦ (𝐴 · (𝐵‘𝑥)))) | |
| 2 | 1 | fveq1d 6828 | . . 3 ⊢ ((𝐴 ∈ 𝐸 ∧ 𝐵 ∈ 𝐷) → ((𝐴.𝑣𝐵)‘𝐶) = ((𝑥 ∈ ℝ ↦ (𝐴 · (𝐵‘𝑥)))‘𝐶)) |
| 3 | fveq2 6826 | . . . . 5 ⊢ (𝑥 = 𝐶 → (𝐵‘𝑥) = (𝐵‘𝐶)) | |
| 4 | 3 | oveq2d 7369 | . . . 4 ⊢ (𝑥 = 𝐶 → (𝐴 · (𝐵‘𝑥)) = (𝐴 · (𝐵‘𝐶))) |
| 5 | eqid 2729 | . . . 4 ⊢ (𝑥 ∈ ℝ ↦ (𝐴 · (𝐵‘𝑥))) = (𝑥 ∈ ℝ ↦ (𝐴 · (𝐵‘𝑥))) | |
| 6 | ovex 7386 | . . . 4 ⊢ (𝐴 · (𝐵‘𝐶)) ∈ V | |
| 7 | 4, 5, 6 | fvmpt 6934 | . . 3 ⊢ (𝐶 ∈ ℝ → ((𝑥 ∈ ℝ ↦ (𝐴 · (𝐵‘𝑥)))‘𝐶) = (𝐴 · (𝐵‘𝐶))) |
| 8 | 2, 7 | sylan9eq 2784 | . 2 ⊢ (((𝐴 ∈ 𝐸 ∧ 𝐵 ∈ 𝐷) ∧ 𝐶 ∈ ℝ) → ((𝐴.𝑣𝐵)‘𝐶) = (𝐴 · (𝐵‘𝐶))) |
| 9 | 8 | 3impa 1109 | 1 ⊢ ((𝐴 ∈ 𝐸 ∧ 𝐵 ∈ 𝐷 ∧ 𝐶 ∈ ℝ) → ((𝐴.𝑣𝐵)‘𝐶) = (𝐴 · (𝐵‘𝐶))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 ∧ w3a 1086 = wceq 1540 ∈ wcel 2109 ↦ cmpt 5176 ‘cfv 6486 (class class class)co 7353 ℝcr 11027 · cmul 11033 .𝑣ctimesr 44432 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-rep 5221 ax-sep 5238 ax-nul 5248 ax-pr 5374 ax-cnex 11084 ax-resscn 11085 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ne 2926 df-ral 3045 df-rex 3054 df-reu 3346 df-rab 3397 df-v 3440 df-sbc 3745 df-csb 3854 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-nul 4287 df-if 4479 df-sn 4580 df-pr 4582 df-op 4586 df-uni 4862 df-iun 4946 df-br 5096 df-opab 5158 df-mpt 5177 df-id 5518 df-xp 5629 df-rel 5630 df-cnv 5631 df-co 5632 df-dm 5633 df-rn 5634 df-res 5635 df-ima 5636 df-iota 6442 df-fun 6488 df-fn 6489 df-f 6490 df-f1 6491 df-fo 6492 df-f1o 6493 df-fv 6494 df-ov 7356 df-oprab 7357 df-mpo 7358 df-mulv 44438 |
| This theorem is referenced by: (None) |
| Copyright terms: Public domain | W3C validator |