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Definition df-bj-ccinfty 34386
Description: Definition of the circle at infinity . (Contributed by BJ, 22-Jun-2019.) The precise definition is irrelevant and should generally not be used. (New usage is discouraged.)
Assertion
Ref Expression
df-bj-ccinfty = ran +∞ei

Detailed syntax breakdown of Definition df-bj-ccinfty
StepHypRef Expression
1 cccinfty 34385 . 2 class
2 cinftyexpi 34380 . . 3 class +∞ei
32crn 5549 . 2 class ran +∞ei
41, 3wceq 1528 1 wff = ran +∞ei
Colors of variables: wff setvar class
This definition is referenced by:  bj-ccinftydisj  34387  bj-elccinfty  34388  bj-minftyccb  34399
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