Description: Monoids are semigroups (elemental version). (Contributed by BJ, 11-Apr-2024) (Proof modification is discouraged.)
Ref | Expression | ||
---|---|---|---|
Assertion | bj-mndsssmgrpel | ⊢ ( 𝐺 ∈ Mnd → 𝐺 ∈ Smgrp ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | bj-mndsssmgrp | ⊢ Mnd ⊆ Smgrp | |
2 | 1 | sseli | ⊢ ( 𝐺 ∈ Mnd → 𝐺 ∈ Smgrp ) |