formal deduction

См. также в других словарях:

• Deduction — • An argument or reasoning process, that kind of mediate inference by which from truths already known we advance to a knowledge of other truths necessarily implied in the former; the mental product or result of that process. Also a method, the… …   Catholic encyclopedia

• Deduction — may refer to: in logic: Deductive reasoning, inference in which the conclusion is of no greater generality than the premises Natural deduction, an approach to proof theory that attempts to provide a formal model of logical reasoning as it… …   Wikipedia

• formal logic — the branch of logic concerned exclusively with the principles of deductive reasoning and with the form rather than the content of propositions. [1855 60] * * * Introduction       the abstract study of propositions, statements, or assertively used …   Universalium

• Formal proof — See also: mathematical proof, proof theory, and axiomatic system A formal proof or derivation is a finite sequence of sentences (called well formed formulas in the case of a formal language) each of which is an axiom or follows from the… …   Wikipedia

• Deduction theorem — In mathematical logic, the deduction theorem is a metatheorem of first order logic.[1] It is a formalization of the common proof technique in which an implication A → B is proved by assuming A and then proving B from this assumption.… …   Wikipedia

• deduction — /di duk sheuhn/, n. 1. the act or process of deducting; subtraction. 2. something that is or may be deducted: She took deductions for a home office and other business expenses from her taxes. 3. the act or process of deducing. 4. something that… …   Universalium

• Formal system — In formal logic, a formal system (also called a logical system,Audi, Robert (Editor). The Cambridge Dictionary of Philosophy . Second edition, Cambridge University Press, 1999. ISBN 978 0521631365 (hardcover) and ISBN 978 0521637220 (paperback).] …   Wikipedia

• Formal interpretation — A formal interpretation [http://books.google.com/books?id=weKqT3ka5g0C pg=PA74 lpg=PA74 dq=%22Formal+interpretation%22+%22formal+language%22 source=web ots=pLN ms7Wi2 sig=P JqwdzOqLcX4nMpP64qmacnkDU hl=en#PPA74,M1 Cann Ronnie, Formal Semantics:… …   Wikipedia

• Formal science — A formal science is a theoretical study that is concerned with theoretical formal systems, for instance, logic, mathematics, systems theory and the theoretical branches of computer science, information theory, economics, statistics, and… …   Wikipedia

• formal system — In logic, a formal language together with a deductive apparatus by which some well formed formulas can be derived from others. Each formal system has a formal language composed of primitive symbols that figure in certain rules of formation… …   Universalium

• Deduction — Die Deduktion (v. lat.: deducere = herabführen), auch deduktive Methode oder deduktiver Schluss, ist in der Philosophie und der Logik eine Schlussfolgerungsweise vom Allgemeinen auf das Besondere. Genauer gesagt, werden mit Hilfe der Deduktion… …   Deutsch Wikipedia