Section Trivial.
Context {L: Language}
{minL: MinimumLanguage L}
{pL: PropositionalLanguage L}
{MD: Model}
{SM: Semantics L MD}
{tpSM: TrivialPropositionalSemantics L MD SM}.

Lemma sat_orp: forall m x y, m |= x || y <-> (m |= x \/ m |= y).