Metamath Proof Explorer


Theorem crngringd

Description: A commutative ring is a ring. (Contributed by SN, 16-May-2024)

Ref Expression
Hypothesis crngringd.1 φRCRing
Assertion crngringd φRRing

Proof

Step Hyp Ref Expression
1 crngringd.1 φRCRing
2 crngring RCRingRRing
3 1 2 syl φRRing