disjunkce

Disjunkce, also known as disjunction, is a logical operation that combines two or more statements or propositions. It is represented by the logical symbol "∨" (often read as "or"). The resulting statement is true if at least one of the combined statements is true. In other words, disjunkce is true unless all the combined statements are false.

For example, consider the statements "It is raining" and "It is snowing." The disjunction of these statements, "It is raining or it is snowing," is true if either it is raining, it is snowing, or both. It is only false if neither statement is true, i.e., if it is neither raining nor snowing.

Disjunkce is a fundamental concept in logic and is used in various fields, including mathematics, computer science, and philosophy. It is often used to express alternatives or possibilities. In set theory, disjunkce corresponds to the union of sets. In propositional logic, it is one of the basic logical connectives, along with conjunction (and), negation (not), and implication (if...then).

In summary, disjunkce is a logical operation that combines statements, resulting in a true statement if at least one of the combined statements is true. It is a key concept in logic and has applications in various fields.