👉 In mathematical logic, a semiseparated formula is one that can be expressed in terms of its own negation and itself. This means that the formula cannot have more than one variable or operator symbol (a disjunction, conjunction, etc.) simultaneously, nor can it contain any quantifiers. For example: - The formula "p implies q" is semiseparated because p and q are both true if p is false. - The formula "q implies r" is not semiseparated because