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Definition df-fv 282
Description: Definition of function application. This sends a temporary communication channel a to F, and communicates the input X and output y. Compare with df-la 280 to see how functions are defined.
Assertion
Ref Expression
df-fv (F' X) = {r | νa[Fa] [aX] [ay] [ry] 1}
Distinct variable groups:   a,r,y,F   r,X,a,y

Detailed syntax breakdown of Definition df-fv
StepHypRef Expression
1 nf . . 3 nilad F
2 nx . . 3 nilad X
31, 2nfv 281 . 2 nilad (F' X)
4 wone 103 . . . . . . . 8 wff 1
5 vr . . . . . . . . 9 var r
65nvar 203 . . . . . . . 8 nilad r
7 vy . . . . . . . . 9 var y
87nvar 203 . . . . . . . 8 nilad y
94, 6, 8wse 204 . . . . . . 7 wff [ry] 1
10 va . . . . . . . 8 var a
1110nvar 203 . . . . . . 7 nilad a
129, 7, 11wre 205 . . . . . 6 wff [ay] [ry] 1
1312, 11, 2wse 204 . . . . 5 wff [aX] [ay] [ry] 1
1413, 1, 11wse 204 . . . 4 wff [Fa] [aX] [ay] [ry] 1
1514, 10wnu 206 . . 3 wff νa[Fa] [aX] [ay] [ry] 1
1615, 5nnab 266 . 2 nilad {r | νa[Fa] [aX] [ay] [ry] 1}
173, 16weq 246 1 wff (F' X) = {r | νa[Fa] [aX] [ay] [ry] 1}
Colors of variables: wff var nilad
This definition is referenced by: (None)
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