free variables การใช้

• Within the definition of f, n is a free variable.
• Various unifiers may produce expressions with varying numbers of free variables.
• Thus, the coordinates of all atoms are considered as free variables.
• A sentences ( formulas with no free variables ) in the language.
• In addition, all free variables of the resulting formula are universally quantified.
• Start by converting the free variable to an argument:
• Suppose that is a formula with one free variable.
• These free variables are implicitly considered universally quantified.
• The free variables in the sub expression are the parameters to the function call.
• A theory is a set of well-formed formulas with no free variables.
• The free variables of the expression must also be free where the function is defined.
• There are no free variables to replace.
• An expression that contains no free variables is said to be " closed ".
• In the sentence above, the possessive pronoun " her " is a free variable.
• We will assume the existence of such fixed points for every modal formula with one free variable.
• Thus, one is motivated to somehow track the occurrences of the free variables in the expression.
• However, a closure requires that the free variables it references survive the enclosing function's execution.
• However, in mathematics, an expression with no free variables must have one and only one value.
• Computing with non-deterministic operations and computing with free variables by narrowing has the same expressive power.
• Step 2 decrements the free variables, giving ? 3 ?% ( ? 1 ?% ).