kahendväärtuslik

kahendväärtuslik is an Estonian adjective that translates to "two-valued" or "dual-valued" in English. It is primarily used in logic and philosophy to describe systems or propositions that can only possess one of two possible states or truth values. The most common application of this concept is in classical logic, where a proposition is considered either true or false, and no intermediate value is allowed. This principle is often referred to as the law of excluded middle.

In mathematics, particularly in set theory, a two-valued function is one whose range consists of exactly two distinct elements. Similarly, in computer science, binary systems and Boolean logic operate on the principle of two-valuedness, where data is represented as either 0 or 1, or as true or false. The concept can also extend to other areas where a dichotomy exists, such as a decision being either yes or no, or a state being either on or off. The opposite of kahendväärtuslik would be concepts that allow for multiple values, degrees, or ambiguities, such as fuzzy logic or multi-valued logic. The term emphasizes the strict binary nature of the system it describes.