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...ndled. The most simple case is that of [[addition]] and [[multiplication]] of [[numbers]]. In the left-hand side of the first equation, the 2 multiplies the sum of 1 and 3; on the right-hand side, it multiplies the 1 and the 3 individually ...

...e than one of the same associative operator (like +) in a row, the [[order of operations]] does not matter. [[Category:Rules of inference]] ...

The '''commutative property''' says that the order of the numbers when adding or multiplying can be changed without changing the The definition of commutative property of addition is <math>a+b=b+a</math>. ''a'' and ''b'' are [[variable]]s and can ...

...number (GN)'''. The concept was first used by [[Kurt Gödel]] for the proof of his [[Gödel's incompleteness theorem|incompleteness theorem]]. ...ivalence theorem]] states criteria for which those numberings of the set of computable functions are Gödel numberings. ...

A '''Horn clause''' is a logical disjunction of literals, where at most one of the literals is positive, and all others are negative. It is named after Al ...hout any positive literals is often called a goal clause.These three kinds of Horn clauses are shown in the following propositional example: ...