Class Conjunction

    • Constructor Detail

      • Conjunction

        public Conjunction​(java.util.Collection<? extends RelationalFormula> formulas)
        Creates a new conjunction with the given inner formulas.
        formulas - a collection of formulas.
      • Conjunction

        public Conjunction()
        Creates a new (empty) conjunction.
      • Conjunction

        public Conjunction​(RelationalFormula first,
                           RelationalFormula second)
        Creates a new conjunction with the two given formulae
        first - a relational formula.
        second - a relational formula.
    • Method Detail

      • isDnf

        public boolean isDnf()
        Description copied from class: FolFormula
        Checks whether this formula is in disjunctive normal form.
        Specified by:
        isDnf in class FolFormula
        "true" iff this formula is in disjunctive normal form.
      • substitute

        public Conjunction substitute​(Term<?> v,
                                      Term<?> t)
                               throws java.lang.IllegalArgumentException
        Description copied from class: RelationalFormula
        Substitutes all occurrences of term "v" in this formula by term "t" and returns the new formula. NOTE: if "v" is a variable and bound to a quantifier then "v" is not substituted in that quantifiers inner formula.
        Specified by:
        substitute in interface ComplexLogicalFormula
        substitute in class AssociativeFolFormula
        v - the term to be substituted.
        t - the term to substitute.
        a formula where every occurrence of "v" is replaced by "t".
        java.lang.IllegalArgumentException - if "v" and "t" are of different sorts (NOTE: this exception is only thrown when "v" actually appears in this formula).
      • toNnf

        public FolFormula toNnf()
        Description copied from class: FolFormula
        Makes the negation normal form of this formula.
        Specified by:
        toNnf in class FolFormula
        the NNF of this formula
      • collapseAssociativeFormulas

        public RelationalFormula collapseAssociativeFormulas()
        Description copied from class: FolFormula
        This method collapses all associative operations appearing in this term, e.g. every a||(b||c) becomes a||b||c.
        Specified by:
        collapseAssociativeFormulas in class FolFormula
        the collapsed formula.
      • createEmptyFormula

        public Conjunction createEmptyFormula()
        an empty version of the AssociativeFormula
      • getOperatorSymbol

        public java.lang.String getOperatorSymbol()
        A String representing the operator which connects two items of the associative formula.
      • getEmptySymbol

        public java.lang.String getEmptySymbol()
        A String representing an empty version of the Associative Formula implementation