Questions tagged [validity]

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Testing the validity of syllogism argument

I came across a validation method for testing the validity of a syllogistic argument which seems quite easier to grasp: For example: To test the argument: no P is B some C is B Therefore, some ...
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Modal Logic: Proving Schema Validity

When faced with a question of the sort, "Is schema X valid in class of frames C?", we usually go about proving or disproving this by assuming the antecedent of X and showing that the consequent ...
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What is a faster method other than truth tables for validating a sentence?

I've learned how to do truth tables with the different syntaxes (conjunction, disjunction, etc.), but when it comes to 3-5 atomic sentences it takes too long to do a full truth table with 8-32 lines. ...
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What are the Limitations and Vulnerabilities of Objectivity Biases?

How reliable is a "Logic / Objectivity" Bias when it comes to reasoning? Or, What are the potential limitations or vulnerabilities of relying solely on these bases of reasoning? Note 1: "Objectivity"...
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In the context of debate centred on a statement, how to validate arguments given to confirm or disconfirm that statement in a logical manner?

Let's say we have the following statement to serve as a starting point around which a debate can be centerd. Man is immortal Someone could say that man is mortal according to accepted scientific ...