👉 In the context of philosophical and mathematical logic, "subsistency" refers to the property of a statement or argument that it is true for all possible interpretations. This means that if one interpretation of the statement or argument is correct, then its truth must also be true under every other possible interpretation. For example, in deductive reasoning, an argument is said to be valid if and only if it has a proof. If we assume that the argument is valid, then by definition, it is true for
