Search Results 1 - 9 of 9. Results contain 14 matches


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Thematic

Relevance logic and entailment

‘Relevance logic’ came into being in the late 1950s, inspired by Wilhelm Ackermann, who rejected certain formulas of the form A→B on the grounds that ‘the truth of ...

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Thematic

Consequence, conceptions of

The idea of one proposition’s following from others – of their implying it – is central to argument. It is, however, an idea that comes with a history ...

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Thematic

Knowledge, concept of

The branch of philosophy concerned with the nature and extent of human knowledge is called epistemology (from the Greek epistēmē meaning knowledge, and logos meaning theory). ...

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Overview

Logic, philosophy of

Philosophy of logic can be roughly characterized as those philosophical topics which have emerged either from the technical development of symbolic (mathematical) logic, or from the motivations that ...

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Thematic

Counterfactual conditionals

‘If bats were deaf, they would hunt during the day.’ What you have just read is called a ‘counterfactual’ conditional; it is an ‘If…then…’ statement the components of ...

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Thematic

Indicative conditionals

Examples of indicative conditionals are ‘If it rained, then the match was cancelled’ and ‘If Alex plays, Carlton will win’. The contrast is with subjunctive or counterfactual conditionals, ...

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Thematic

Paraconsistent logic

A logic is paraconsistent if it does not validate the principle that from a pair of contradictory sentences, A and ∼A, everything follows, as most orthodox logics do. ...

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Thematic

Logical laws

There are at least three different kinds of answer to the question ‘What is a logical law?’ One establishes what it means for something to be a logical ...

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Modal logic

Modal logic, narrowly conceived, is the study of principles of reasoning involving necessity and possibility. More broadly, it encompasses a number of structurally similar inferential systems. In this ...

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