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Definition df-fix 32296
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 )

Detailed syntax breakdown of Definition df-fix
StepHypRef Expression
1 cA . . 3 class 𝐴
21cfix 32272 . 2 class Fix 𝐴
3 cid 5229 . . . 4 class I
41, 3cin 3779 . . 3 class (𝐴 ∩ I )
54cdm 5322 . 2 class dom (𝐴 ∩ I )
62, 5wceq 1637 1 wff Fix 𝐴 = dom (𝐴 ∩ I )
Colors of variables: wff setvar class
This definition is referenced by:  elfix  32340  fixssdm  32343  fixun  32346
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