Definition df-sdom 8924

Description: Define the strict dominance relation. Alternate possible definitions are derived as brsdom 8949 and brsdom2 9071. Definition 3 of [Suppes] p. 97. (Contributed by NM, 31-Mar-1998.)

Assertion

Ref	Expression
df-sdom	⊢ ≺ = ( ≼ ∖ ≈ )

Detailed syntax breakdown of Definition df-sdom

Step	Hyp	Ref	Expression
1		csdm 8920	. 2 class ≺
2		cdom 8919	. . 3 class ≼
3		cen 8918	. . 3 class ≈
4	2, 3	cdif 3914	. 2 class ( ≼ ∖ ≈ )
5	1, 4	wceq 1540	1 wff ≺ = ( ≼ ∖ ≈ )

This definition is referenced by:  relsdom  8928  brsdom  8949  dfdom2  8952  dfsdom2  9070