A disjunct is one of the component propositions within a disjunction. Each disjunct represents an alternative to the others, forming…
A directed relation is one where the order matters. If an element is related to another, it doesn't necessarily mean…
A crucial lemma in Gödel's incompleteness theorems. It states that for any formula with one free variable, there exists a…
Deviant logic refers to logical systems that differ from classical logic. These systems explore alternative rules and structures, offering new…
A deterministic Turing machine (DTM) is a theoretical model of computation. For every state and input symbol, it has exactly…
Determiners are crucial words like 'the', 'a', 'some', and 'every' that specify the reference of nouns and noun phrases. They…
A destructive dilemma is a logical argument form. It uses two conditional statements and negates their consequents to disprove at…
A designated value in logic functions similarly to truth in classical systems. It ensures that if premises hold a designated…
Deontic modal logic is a specialized field within modal logic that rigorously examines concepts of obligation, permission, and prohibition. It…
A denumerable set is one whose elements can be matched one-to-one with the natural numbers. This concept is fundamental to…