Definition df-eqvrel 39694

Description: Define the equivalence relation predicate. (Read: 𝑅 is an equivalence relation.) For sets, being an element of the class of equivalence relations (df-eqvrels 39693) is equivalent to satisfying the equivalence relation predicate, see eleqvrelsrel 39703. Alternate definitions are dfeqvrel2 39699 and dfeqvrel3 39700. (Contributed by Peter Mazsa, 17-Apr-2019.)

Assertion

Ref	Expression
df-eqvrel	⊢ ( EqvRel 𝑅 ↔ ( RefRel 𝑅 ∧ SymRel 𝑅 ∧ TrRel 𝑅))

Detailed syntax breakdown of Definition df-eqvrel

Step	Hyp	Ref	Expression
1		cR	. . 3 class 𝑅
2	1	weqvrel 39225	. 2 wff EqvRel 𝑅
3	1	wrefrel 39214	. . 3 wff RefRel 𝑅
4	1	wsymrel 39220	. . 3 wff SymRel 𝑅
5	1	wtrrel 39223	. . 3 wff TrRel 𝑅
6	3, 4, 5	w3a 1103	. 2 wff ( RefRel 𝑅 ∧ SymRel 𝑅 ∧ TrRel 𝑅)
7	2, 6	wb 209	1 wff ( EqvRel 𝑅 ↔ ( RefRel 𝑅 ∧ SymRel 𝑅 ∧ TrRel 𝑅))

This definition is used by:  dfeqvrel2  39699  dfeqvrel3  39700  eqvrelrefrel  39707  eqvrelsymrel  39708  eqvreltrrel  39709  eqvreleq  39711  eqvrelcoss  39726  refrelredund2  39745