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Definition df-bj-ccinftyN 34511
Description: Definition of the circle at infinity ∞N. (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-ccinftyN ∞N = ran +∞e

Detailed syntax breakdown of Definition df-bj-ccinftyN
StepHypRef Expression
1 cccinftyN 34510 . 2 class ∞N
2 cinftyexpitau 34508 . . 3 class +∞e
32crn 5549 . 2 class ran +∞e
41, 3wceq 1536 1 wff ∞N = ran +∞e
Colors of variables: wff setvar class
This definition is referenced by:  bj-inftyexpitaufo  34512
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