Theorem wlimss

Description: The class of limit points is a subclass of the base class. (Contributed by Scott Fenton, 16-Jun-2018)

	Ref	Expression
Assertion	wlimss	|- WLim ( R , A ) C_ A

Proof

Step	Hyp	Ref	Expression
1		df-wlim	|- WLim ( R , A ) = { x e. A | ( x =/= inf ( A , A , R ) /\ x = sup ( Pred ( R , A , x ) , A , R ) ) }
2	1	ssrab3	|- WLim ( R , A ) C_ A