Axiom ax-bdel 17018

Description: An atomic formula is bounded (membership predicate). (Contributed by BJ, 3-Oct-2019.)

Assertion

Ref	Expression
ax-bdel	⊢ BOUNDED 𝑥 ∈ 𝑦

Detailed syntax breakdown of Axiom ax-bdel

Step	Hyp	Ref	Expression
1		vx	. . 3 setvar 𝑥
2		vy	. . 3 setvar 𝑦
3	1, 2	wel 2210	. 2 wff 𝑥 ∈ 𝑦
4	3	wbd 17009	1 wff BOUNDED 𝑥 ∈ 𝑦

This axiom is used by:  bdcv  17045  bdop  17072  bdcuni  17073  bdcint  17074  bdcriota  17080  bj-nalset  17092  bj-inex  17104  bj-axun2  17112  bj-nnelirr  17150