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Metamath Proof Explorer

Theorem ringssrng

Description: The unital rings are non-unital rings. (Contributed by AV, 20-Mar-2020)

Ref Expression
Assertion ringssrng Ring ⊆ Rng

Proof

Step Hyp Ref Expression
1 ringrng ⊢ ( 𝑥 ∈ Ring → 𝑥 ∈ Rng )
2 1 ssriv ⊢ Ring ⊆ Rng