Extended logics accept the basic intuitions behind classical logic and apply it to other fields, such as metaphysics, ethics, and epistemology. Deviant logics, on the other hand, reject certain …

Oct 29, 2025 · Logic, the study of correct reasoning, especially as it involves the drawing of inferences. This article discusses the basic elements and problems of contemporary logic and …

Despite their differences, there are many commonalities among these logics. In particular, in each case, there is a language with a formal syntax and a precise semantics; there is a notion of …

Description logics maintain a state of global consistency over a state of knowledge.

relative in this way. In particular, for each of the different logics listed above, there is a corresponding tand in the ab-stract. It is best to consid some actual examples. In a later …

Quantification over sets of such sets (or of n -tuples of such sets or over properties and relations of such sets) as are considered in second-order logic gives rise to third-order logic; and all …

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We talk of logic, but also of logics. A logic is just a set of rules and techniques for distinguishing good reasoning from bad. A logic must formulate precise standards for evaluating reasoning …

Logic (from the Greek "logos", which has a variety of meanings including word, thought, idea, argument, account, reason or principle) is the study of reasoning, or the study of the principles …

The meaning of LOGIC is a science that deals with the principles and criteria of validity of inference and demonstration : the science of the formal principles of reasoning. How to use …