Definition df-bj-ccinfty

Description: Definition of the circle at infinity CCinfty . (Contributed by BJ, 22-Jun-2019) The precise definition is irrelevant and should generally not be used. (New usage is discouraged.)

	Ref	Expression
Assertion	df-bj-ccinfty	$$⊢{ℂ}_{\infty }=\mathrm{ran}inftyexpi$$

Detailed syntax breakdown

Step	Hyp	Ref	Expression
0		cccinfty	$$class{ℂ}_{\infty }$$
1		cinftyexpi	$$classinftyexpi$$
2	1	crn	$$class\mathrm{ran}inftyexpi$$
3	0 2	wceq	$$wff{ℂ}_{\infty }=\mathrm{ran}inftyexpi$$