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Definition df-fix 25618
Description: Define the class of all fixpoints of a relationship. (Contributed by Scott Fenton, 11-Apr-2012.)
Assertion
Ref Expression
df-fix  |-  Fix A  =  dom  ( A  i^i  _I  )

Detailed syntax breakdown of Definition df-fix
StepHypRef Expression
1 cA . . 3  class  A
21cfix 25596 . 2  class  Fix A
3 cid 4457 . . . 4  class  _I
41, 3cin 3283 . . 3  class  ( A  i^i  _I  )
54cdm 4841 . 2  class  dom  ( A  i^i  _I  )
62, 5wceq 1649 1  wff  Fix A  =  dom  ( A  i^i  _I  )
Colors of variables: wff set class
This definition is referenced by:  elfix  25661  fixssdm  25664  fixun  25667
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