Theorem addrfv 42068

Description: Vector addition at a value. The operation takes each vector 𝐴 and 𝐵 and forms a new vector whose values are the sum of each of the values of 𝐴 and 𝐵. (Contributed by Andrew Salmon, 27-Jan-2012.)

Assertion

Ref	Expression
addrfv	⊢ ((𝐴 ∈ 𝐸 ∧ 𝐵 ∈ 𝐷 ∧ 𝐶 ∈ ℝ) → ((𝐴+𝑟𝐵)‘𝐶) = ((𝐴‘𝐶) + (𝐵‘𝐶)))

Proof of Theorem addrfv

Dummy variable 𝑥 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		addrval 42065	. . . 4 ⊢ ((𝐴 ∈ 𝐸 ∧ 𝐵 ∈ 𝐷) → (𝐴+𝑟𝐵) = (𝑥 ∈ ℝ ↦ ((𝐴‘𝑥) + (𝐵‘𝑥))))
2	1	fveq1d 6768	. . 3 ⊢ ((𝐴 ∈ 𝐸 ∧ 𝐵 ∈ 𝐷) → ((𝐴+𝑟𝐵)‘𝐶) = ((𝑥 ∈ ℝ ↦ ((𝐴‘𝑥) + (𝐵‘𝑥)))‘𝐶))
3		fveq2 6766	. . . . 5 ⊢ (𝑥 = 𝐶 → (𝐴‘𝑥) = (𝐴‘𝐶))
4		fveq2 6766	. . . . 5 ⊢ (𝑥 = 𝐶 → (𝐵‘𝑥) = (𝐵‘𝐶))
5	3, 4	oveq12d 7285	. . . 4 ⊢ (𝑥 = 𝐶 → ((𝐴‘𝑥) + (𝐵‘𝑥)) = ((𝐴‘𝐶) + (𝐵‘𝐶)))
6		eqid 2738	. . . 4 ⊢ (𝑥 ∈ ℝ ↦ ((𝐴‘𝑥) + (𝐵‘𝑥))) = (𝑥 ∈ ℝ ↦ ((𝐴‘𝑥) + (𝐵‘𝑥)))
7		ovex 7300	. . . 4 ⊢ ((𝐴‘𝐶) + (𝐵‘𝐶)) ∈ V
8	5, 6, 7	fvmpt 6867	. . 3 ⊢ (𝐶 ∈ ℝ → ((𝑥 ∈ ℝ ↦ ((𝐴‘𝑥) + (𝐵‘𝑥)))‘𝐶) = ((𝐴‘𝐶) + (𝐵‘𝐶)))
9	2, 8	sylan9eq 2798	. 2 ⊢ (((𝐴 ∈ 𝐸 ∧ 𝐵 ∈ 𝐷) ∧ 𝐶 ∈ ℝ) → ((𝐴+𝑟𝐵)‘𝐶) = ((𝐴‘𝐶) + (𝐵‘𝐶)))
10	9	3impa 1109	1 ⊢ ((𝐴 ∈ 𝐸 ∧ 𝐵 ∈ 𝐷 ∧ 𝐶 ∈ ℝ) → ((𝐴+𝑟𝐵)‘𝐶) = ((𝐴‘𝐶) + (𝐵‘𝐶)))

Syntax hints:   → wi 4   ∧ wa 396   ∧ w3a 1086   = wceq 1539   ∈ wcel 2106   ↦ cmpt 5156  ‘cfv 6426  (class class class)co 7267  ℝcr 10880   + caddc 10884  +_𝑟cplusr 42056

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1798  ax-4 1812  ax-5 1913  ax-6 1971  ax-7 2011  ax-8 2108  ax-9 2116  ax-10 2137  ax-11 2154  ax-12 2171  ax-ext 2709  ax-rep 5208  ax-sep 5221  ax-nul 5228  ax-pr 5350  ax-cnex 10937  ax-resscn 10938

This theorem depends on definitions:  df-bi 206  df-an 397  df-or 845  df-3an 1088  df-tru 1542  df-fal 1552  df-ex 1783  df-nf 1787  df-sb 2068  df-mo 2540  df-eu 2569  df-clab 2716  df-cleq 2730  df-clel 2816  df-nfc 2889  df-ne 2944  df-ral 3069  df-rex 3070  df-reu 3071  df-rab 3073  df-v 3431  df-sbc 3716  df-csb 3832  df-dif 3889  df-un 3891  df-in 3893  df-ss 3903  df-nul 4257  df-if 4460  df-sn 4562  df-pr 4564  df-op 4568  df-uni 4840  df-iun 4926  df-br 5074  df-opab 5136  df-mpt 5157  df-id 5484  df-xp 5590  df-rel 5591  df-cnv 5592  df-co 5593  df-dm 5594  df-rn 5595  df-res 5596  df-ima 5597  df-iota 6384  df-fun 6428  df-fn 6429  df-f 6430  df-f1 6431  df-fo 6432  df-f1o 6433  df-fv 6434  df-ov 7270  df-oprab 7271  df-mpo 7272  df-addr 42062

This theorem is referenced by:  addrcom  42074