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- Non-logical_symbol abstract "In logic, the formal languages used to create expressions consist of symbols, which can be broadly divided into constants and variables. The constants of a language can further be divided into logical symbols and non-logical symbols (sometimes also called logical and non-logical constants).The non-logical symbols of a language of first-order logic consist of predicates and individual constants. These include symbols that, in an interpretation, may stand for individual constants, variables, functions, or predicates. A language of first-order logic is a formal language over the alphabet consisting of its non-logical symbols and its logical symbols. The latter include logical connectives, quantifiers, and variables that stand for statements.A non-logical symbol only has meaning or semantic content when one is assigned to it by means of an interpretation. Consequently, a sentence containing a non-logical symbol lacks meaning except under an interpretation, so a sentence is said to be true or false under an interpretation. Main article: first order logic especially Syntax of first-order logicThe logical constants, by contrast, have the same meaning in all interpretations. They include the symbols for truth-functional connectives (such as and, or, not, implies, and logical equivalence) and the symbols for the quantifiers "for all" and "there exists".The equality symbol is sometimes treated as a non-logical symbol and sometimes treated as a symbol of logic. If it is treated as a logical symbol, then any interpretation will be required to interpret the equality sign using true equality; if interpreted as a non-logical symbol, it may be interpreted by an arbitrary equivalence relation.".
- Non-logical_symbol wikiPageExternalLink plato.stanford.edu.
- Non-logical_symbol wikiPageExternalLink logic-classical.
- Non-logical_symbol wikiPageExternalLink 4.
- Non-logical_symbol wikiPageID "7791994".
- Non-logical_symbol wikiPageRevisionID "577928264".
- Non-logical_symbol hasPhotoCollection Non-logical_symbol.
- Non-logical_symbol subject Category:Formal_languages.
- Non-logical_symbol subject Category:Logic_symbols.
- Non-logical_symbol type Abstraction100002137.
- Non-logical_symbol type Communication100033020.
- Non-logical_symbol type FormalLanguages.
- Non-logical_symbol type Language106282651.
- Non-logical_symbol type LogicSymbols.
- Non-logical_symbol type Signal106791372.
- Non-logical_symbol type Symbol106806469.
- Non-logical_symbol comment "In logic, the formal languages used to create expressions consist of symbols, which can be broadly divided into constants and variables. The constants of a language can further be divided into logical symbols and non-logical symbols (sometimes also called logical and non-logical constants).The non-logical symbols of a language of first-order logic consist of predicates and individual constants.".
- Non-logical_symbol label "Non-logical symbol".
- Non-logical_symbol label "Símbolo não lógico".
- Non-logical_symbol sameAs Símbolo_não_lógico.
- Non-logical_symbol sameAs m.026d59_.
- Non-logical_symbol sameAs Q7048956.
- Non-logical_symbol sameAs Q7048956.
- Non-logical_symbol sameAs Non-logical_symbol.
- Non-logical_symbol wasDerivedFrom Non-logical_symbol?oldid=577928264.
- Non-logical_symbol isPrimaryTopicOf Non-logical_symbol.