👉 In mathematics and physics, a subcontrary is a concept in the field of quantum mechanics that refers to a state or wave function that can be expressed as a superposition of two coherent states. The term "subcontrary" comes from the Greek word "sub," which means below, and "contrary," which is opposite. This concept is important because it provides a way to describe the possibility of quantum systems existing in multiple states simultaneously. In quantum mechanics, subcontraries are often used