The propositional logic calculator does not return deduction steps for an argument that contains bracketed negation where disjunctive syllogism/Modus Tollendo Ponens is applicable. For example, if ( ~ ( P -> Q )) is in the part of a premise on which D.S should be applicable i.e., the negation of the previous wff is present in the knowledge base, the calculator does not return the deduction steps.
Type: Bug
Description:
The propositional logic calculator does not return deduction steps for an argument that contains bracketed negation where disjunctive syllogism/Modus Tollendo Ponens is applicable. For example, if ( ~ ( P -> Q )) is in the part of a premise on which D.S should be applicable i.e., the negation of the previous wff is present in the knowledge base, the calculator does not return the deduction steps.