Axiom ax-bdal 16844

Description: A bounded universal quantification of a bounded formula is bounded. Note the disjoint variable condition on x , y. (Contributed by BJ, 25-Sep-2019.)

Hypothesis

Ref	Expression
bdal.1	|- BOUNDED ph

Assertion

Ref	Expression
ax-bdal	|- BOUNDED A. x e. y ph

Distinct variable group:   x, y

Allowed substitution hints:   ph( x, y)

Detailed syntax breakdown of Axiom ax-bdal

Step	Hyp	Ref	Expression
1		wph	. . 3 wff ph
2		vx	. . 3 setvar x
3		vy	. . . 4 setvar y
4	3	cv 1401	. . 3 class y
5	1, 2, 4	wral 2528	. 2 wff A. x e. y ph
6	5	wbd 16838	1 wff BOUNDED A. x e. y ph

This axiom is used by:  bdreu  16881  bdss  16890  bdcint  16903  bdciin  16905  bdcriota  16909  bj-bdind  16956  bj-nntrans  16977