👉 The term "bellatrix" is a Latin phrase that refers to an imaginary person or entity. It has various interpretations and meanings depending on the context in which it is used. In mathematics, the term "bellatrix" is often used as a mathematical object. It represents the set of all numbers that are multiples of 3 plus 1, or equivalently, the set of all integers that are multiples of both 3 and 1. The term was first introduced by mathematician Joseph-L