"Do you want to climb the mountain tomorrow?" Whether to express a proposition

No, proposition refers to the semantics of a judgment (sentence) (the concept actually expressed), and it is an expression corresponding to the true and false values. The concept of proposition is mainly used in the fields of logic and mathematics. And "Do you want to climb the mountain tomorrow?" It is a kind of inquiry, looking forward to the decision or choice of climbing the mountain tomorrow, not a judgment or statement, so it is not a proposition.