Formal System

(redirected from Formal systems)
Also found in: Dictionary.

Formal System


an uninterpreted calculus such that (1) the class of its expressions, or formulas, is usually defined inductively through the specification of primitive (elementary, atomic) formulas and rules for the formation (construction) of formulas and (2) the subclass of provable formulas (theorems) is defined through the specification of a system of axioms and of rules for the derivation of theorems from axioms and already proved theorems (seeRULE OF INFERENCE).

The term “formal system” has many synonyms, which, however, are sometimes used to refer to concepts related to, but not identical with, formal systems. Examples of these synonyms are “formal theory,” “formal mathematics,” “formalism,” “formal calculus,” “abstract calculus,” “syntactic system,” “axiomatic system,” “logistic system,” “formal language,” “formal logic,” “codification,” and “deductive system.”

References in periodicals archive ?
NASDAQ OTC:NIQU) , developers of routing software for use in the spread spectrum radio frequency for wireless Internet and Intranet access, today announced, through its wholly owned subsidiary Tech Associates International, that it has teamed with Formal Systems, Inc.
Conductors are also happy to bend the rules and work outside of formal systems and processes, and are more likely to make decisions based on gut-feel rather than hard data (54% vs.
The full report makes a number of recommendations, including introducing formal systems in FE institutions and Welsh for adults centres to monitor the results of learner-r involvement activities, improving class representatives' understanding of their role and improving tutors' understanding of their role in involving learners.
This issue aside, neo-formalism still faces Godelian worries, which is to say: so long as theoremhood in the relevant formal systems is recursively enumerable, mathematical truth will outstrip formal proof.
Feferman starts with an explanation of formal systems and Godel's motivation in writing the proof.
They can use properly the cards as compared to the students of formal systems of education.
He said that Arab leaders are facing exceptional challenges, adding that their people are trying to skip the formal systems.
Those individuals who understand formal systems within a college can use this knowledge to their advantage.
He covers Konig's Lemma (including two ways of looking at mathematics), posets and maximal elements (including order), formal systems (including post systems and compatibility as bonuses), deduction in posets (including proving statements about a poset), Boolean algebras, propositional logic (including a system for proof about propositions), valuations (including semantics for propositional logic), filters and ideals (including the algebraic theory of Boolean algebras), first-order logic, completeness and compactness, model theory (including countable models) and nonstandard analysis (including infinitesimal numbers).
31) Godel addressed the difficulties of proving consistency in formal systems by ingeniously employing a mathematical tool known as "mapping.
In an FGC, families have the opportunity to tap into their own resources to rebuild and strengthen existing social support networks, form new connections, and forge effective partnerships with formal systems.
Wallace is best known for his works of fiction, including Infinite Jest, but his interest in math and formal systems led him to tackle the confounding yet compelling story of infinity.

Full browser ?