Disjunction
The disjunction of two statements p and q is the statement p or q, and is denoted by p v q. The disjunction p v q is true if either of p and q are true or if both are true.
In logic and mathematics, disjunction refers to a logical operation that links two or more propositions, indicating that at least one of them is true. The symbol for disjunction is ∨ (v shaped symbol), which is usually read as or. Disjunction is commonly used in mathematical equations, computer programming, and decision making, to name a few applications.
For example, consider the following statement: It is either raining or snowing. Here, the two propositions are It is raining and It is snowing, and the disjunction of the two propositions is the statement, It is either raining or snowing. In this case, the disjunction is true if at least one of its propositions is true, meaning that if it is raining or snowing, the disjunction is true.
Disjunction can also be extended to more than two propositions. For instance, the statement X is an even number or Y is a multiple of 3, or Z is greater than 10 includes three propositions, and it is true if at least one of them is true.
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