Theorem ssrab2

Description: Subclass relation for a restricted class. (Contributed by NM, 19-Mar-1997) (Proof shortened by BJ and SN, 8-Aug-2024)

	Ref	Expression
Assertion	ssrab2	$$⊢\left\{x\in A|\phi \right\}\subseteq A$$

Proof

Step	Hyp	Ref	Expression
1		elrabi	$$⊢y\in \left\{x\in A|\phi \right\}\to y\in A$$
2	1	ssriv	$$⊢\left\{x\in A|\phi \right\}\subseteq A$$