Theorem bj-grpssmndel

Description: Groups are monoids (elemental version). Shorter proof of grpmnd . (Contributed by BJ, 5-Jan-2024) (Proof modification is discouraged.)

	Ref	Expression
Assertion	bj-grpssmndel	$$⊢A\in \mathrm{Grp}\to A\in \mathrm{Mnd}$$

Proof

Step	Hyp	Ref	Expression
1		bj-grpssmnd	$$⊢\mathrm{Grp}\subseteq \mathrm{Mnd}$$
2	1	sseli	$$⊢A\in \mathrm{Grp}\to A\in \mathrm{Mnd}$$