In logic and mathematics, the converse of a categorical or implicational statement is the result of reversing its two constituent statements. For the...

are not non-P". Contraposition Converse (logic) Obversion Transposition (logic) Taylor, Courtney K. "What Are the Converse, Contrapositive, and Inverse...

Look up converse in Wiktionary, the free dictionary. Converse may refer to: Converse (logic), the result of reversing the two parts of a definite or implicational...

In quantified modal logic, the Barcan formula and the converse Barcan formula (more accurately, schemata rather than formulas) (i) syntactically state...

In propositional logic, affirming the consequent (also known as converse error, fallacy of the converse, or confusion of necessity and sufficiency) is...

In logic and formal semantics, term logic, also known as traditional logic, syllogistic logic or Aristotelian logic, is a loose name for an approach to...

In logic, converse nonimplication is a logical connective which is the negation of converse implication (equivalently, the negation of the converse of...

and the inverse (or the converse) are both true or both false, then it is known as a logical biconditional. In traditional logic, contraposition is a form...

-- Contradiction -- Contrapositive -- Control logic -- Conventionalism -- Converse (logic) -- Converse Barcan formula -- Correlative-based fallacies --...

of deriving conclusions from premises. They are integral parts of formal logic, serving as norms of the logical structure of valid arguments. If an argument...

Logic is the study of correct reasoning. It includes both formal and informal logic. Formal logic is the study of deductively valid inferences or logical...

Mathematical logic is the study of formal logic within mathematics. Major subareas include model theory, proof theory, set theory, and recursion theory...

logic, algebraic logic is the reasoning obtained by manipulating equations with free variables. What is now usually called classical algebraic logic focuses...

In mathematical logic and metalogic, a formal system is called complete with respect to a particular property if every formula having the property can...

logic, sometimes more generally called constructive logic, refers to systems of symbolic logic that differ from the systems used for classical logic by...

In logic and deductive reasoning, an argument is sound if it is both valid in form and has no false premises. Soundness has a related meaning in mathematical...

\neg \neg P\equiv P} . In intuitionistic logic, a proposition implies its double negation, but not conversely. This marks one important difference between...

the converse of a binary relation is the relation that occurs when the order of the elements is switched in the relation. For example, the converse of...

clearly inconsistent. Conversely, in an explosive formal system (e.g., classical or intuitionistic propositional or first-order logics) every inconsistent...

false positives (possibly at the expense of more false negatives). Converse (logic) Prosecutor's fallacy Plous, Scott (1993). The Psychology of Judgment...

not all many-valued logics are paraconsistent). Dialetheic logics, which are also many-valued, are paraconsistent, but the converse does not hold. The...

Translated as Gradshtein, I. S. (1963). Direct and Converse Theorems: The Elements of Symbolic Logic. Translated by Boddington, T. Oxford, London, New...

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...

Combinatory logic is a notation to eliminate the need for quantified variables in mathematical logic. It was introduced by Moses Schönfinkel and Haskell...

Classical logic Computability logic Deontic logic Dependence logic Description logic Deviant logic Doxastic logic Epistemic logic First-order logic Formal...

branch of logic. It is also called propositional logic, statement logic, sentential calculus, sentential logic, or sometimes zeroth-order logic. Sometimes...

arguments; thus, the symbol for converse implication is redundant. In some logical calculi (notably, in classical logic), certain essentially different...

First-order logic, also called predicate logic, predicate calculus, or quantificational logic, is a collection of formal systems used in mathematics,...

although P necessarily implies "not not P," the converse is suspect in English, much as with intuitionistic logic. In view of the highly idiosyncratic usage...

Hoare logic (also known as Floyd–Hoare logic or Hoare rules) is a formal system with a set of logical rules for reasoning rigorously about the correctness...