About: Validity (logic)

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In logic, specifically in deductive reasoning, an argument is valid if and only if it takes a form that makes it impossible for the premises to be true and the conclusion nevertheless to be false. It is not required for a valid argument to have premises that are actually true, but to have premises that, if they were true, would guarantee the truth of the argument's conclusion. Valid arguments must be clearly expressed by means of sentences called well-formed formulas (also called wffs or simply formulas).

Attributes	Values
rdfs:label	Validity (logic) (en)
rdfs:comment	In logic, specifically in deductive reasoning, an argument is valid if and only if it takes a form that makes it impossible for the premises to be true and the conclusion nevertheless to be false. It is not required for a valid argument to have premises that are actually true, but to have premises that, if they were true, would guarantee the truth of the argument's conclusion. Valid arguments must be clearly expressed by means of sentences called well-formed formulas (also called wffs or simply formulas). (en)
dbp:wikiPageUsesTemplate	dbt:! dbt:* dbt:Main dbt:Other_uses dbt:Portal dbt:Reflist dbt:Short_description dbt:Use_American_English dbt:Use_mdy_dates dbt:Mathematical_logic dbt:Logic dbt:Sisterprojectlinks
Subject	Arguments Concepts in logic Deductive reasoning Logical truth
prov:wasDerivedFrom	http://en.wikipedia.org/wiki/Validity_(logic)?oldid=1074117627&ns=0
Wikipage page ID	21304742 (xsd:integer)
page length (characters) of wiki page	8537 (xsd:nonNegativeInteger)
Wikipage revision ID	1074117627 (xsd:integer)
has abstract	In logic, specifically in deductive reasoning, an argument is valid if and only if it takes a form that makes it impossible for the premises to be true and the conclusion nevertheless to be false. It is not required for a valid argument to have premises that are actually true, but to have premises that, if they were true, would guarantee the truth of the argument's conclusion. Valid arguments must be clearly expressed by means of sentences called well-formed formulas (also called wffs or simply formulas). The validity of an argument can be tested, proved or disproved, and depends on its logical form. (en)
foaf:isPrimaryTopicOf	http://en.wikipedia.org/wiki/Validity_(logic)
is Wikipage redirect of	Logical validity Logically valid Semantic validity Valid argument Validity and soundness
is Link from a Wikipage to another Wikipage of	Formal fallacy Formation rule Greg Restall List of valid argument forms Logic Logic and rationality Logical conjunction Logical connective Logical consequence Logical form Logical positivism Logical truth Mark 12 Market environment Non-surveyable proof 24-hour news cycle Absorption (logic) Aesthetic relativism Age-related mobility disability Alasdair Cochrane Appeal to the stone Apprehension (understanding) Argument Argument from anecdote Argumentation scheme Argumentation theory Argument–deduction–proof distinctions Aristotle Associative property Automated theorem proving Begging the question Belief Belief bias Biconditional elimination Biconditional introduction Boolean conjunctive query Boundary critique Brackets (text editor) Branches of science Brand valuation CODY Assessment California Verbal Learning Test Carlos Santiago Nino Case study in psychology Centre of Research in Theories and Practices that Overcome Inequalities Free choice inference Frege's puzzles Freud's seduction theory Generality (psychology) Glossary of artificial intelligence Glossary of rhetorical terms Dialogic learning Dialogical logic Differential item functioning Disjunction elimination Disjunction introduction Disjunctive syllogism Double negation History of logic History of mathematical notation Legal English Metalogic Metatheory Chitling Test Circular reasoning Classification of mental disorders Classification of sleep disorders Criteria of truth Critical communicative methodology Frankfurt School Criticism

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