👉 In mathematical logic, a passade is a type of propositional function that can be used to express logical operators. A passade is defined as a binary relation between two propositions (expressed using symbols) such that if it holds for some proposition p and its negation ¬p, then the corresponding proposition p itself must also hold. For instance, consider the following passade: ```math P \rightarrow Q ``` This means that if proposition P is true, then proposition Q must