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 ...
‘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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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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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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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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‘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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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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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. ...
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, 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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