Metamath Proof Explorer


Theorem srgmnd

Description: A semiring is a monoid. (Contributed by Thierry Arnoux, 21-Mar-2018)

Ref Expression
Assertion srgmnd R SRing R Mnd

Proof

Step Hyp Ref Expression
1 srgcmn R SRing R CMnd
2 cmnmnd R CMnd R Mnd
3 1 2 syl R SRing R Mnd