Metamath Proof Explorer


Theorem rlmbas

Description: Base set of the ring module. (Contributed by Stefan O'Rear, 31-Mar-2015)

Ref Expression
Assertion rlmbas ⊢ Base R = Base ringLMod ⁡ R

Proof

Step Hyp Ref Expression
1 rlmval ⊢ ringLMod ⁡ R = subringAlg ⁡ R ⁡ Base R
2 1 a1i ⊢ ⊤ → ringLMod ⁡ R = subringAlg ⁡ R ⁡ Base R
3 ssidd ⊢ ⊤ → Base R ⊆ Base R
4 2 3 srabase ⊢ ⊤ → Base R = Base ringLMod ⁡ R
5 4 mptru ⊢ Base R = Base ringLMod ⁡ R