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Definition df-addcfn 5746
Description: Define the function representing cardinal sum. (Contributed by SF, 9-Feb-2015.)
Assertion
Ref Expression
df-addcfn AddC = (x V, y V (x +c y))
Distinct variable group:   x,y

Detailed syntax breakdown of Definition df-addcfn
StepHypRef Expression
1 caddcfn 5745 . 2 class AddC
2 vx . . 3 setvar x
3 vy . . 3 setvar y
4 cvv 2859 . . 3 class V
52cv 1641 . . . 4 class x
63cv 1641 . . . 4 class y
75, 6cplc 4375 . . 3 class (x +c y)
82, 3, 4, 4, 7cmpt2 5653 . 2 class (x V, y V (x +c y))
91, 8wceq 1642 1 wff AddC = (x V, y V (x +c y))
Colors of variables: wff setvar class
This definition is referenced by:  addcfnex  5824  addcfn  5825  braddcfn  5826
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