👉 In mathematics, a property is said to be non-separable if it cannot be expressed in terms of other properties that are already known. In other words, if there exists some other property that can describe or explain one property, then that property cannot be used as a substitute for the original property. For example, consider the property "a set is closed under addition" (i.e., if $A$ and $B$ are sets and $A + B = A$, then $A$
