Definition: A nonsubtility is a concept in mathematics that refers to a situation where two quantities are not equal but satisfy both of their properties. This concept arises from the idea that, although one quantity may have a value greater than another, it cannot be considered "nonsubtle" because it violates the principle of indifference between values. Nonsubtility can be seen as a way of expressing the idea that while two quantities may appear to be equal, they might not actually be. In other words, non