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Definition df-va 26618
Description: Define vector addition on a normed complex vector space. (Contributed by NM, 23-Apr-2007.) (New usage is discouraged.)
Assertion
Ref Expression
df-va +𝑣 = (1st ∘ 1st )

Detailed syntax breakdown of Definition df-va
StepHypRef Expression
1 cpv 26608 . 2 class +𝑣
2 c1st 7034 . . 3 class 1st
32, 2ccom 5032 . 2 class (1st ∘ 1st )
41, 3wceq 1474 1 wff +𝑣 = (1st ∘ 1st )
Colors of variables: wff setvar class
This definition is referenced by:  vafval  26626  0vfval  26629  vsfval  26658
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