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  2. Reductio ad absurdum - Wikipedia

    en.wikipedia.org/wiki/Reductio_ad_absurdum

    Reductio ad absurdum, painting by John Pettie exhibited at the Royal Academy in 1884. In logic, reductio ad absurdum (Latin for "reduction to absurdity"), also known as argumentum ad absurdum (Latin for "argument to absurdity") or apagogical argument, is the form of argument that attempts to establish a claim by showing that the opposite scenario would lead to absurdity or contradiction.

  3. List of valid argument forms - Wikipedia

    en.wikipedia.org/wiki/List_of_valid_argument_forms

    Of the many and varied argument forms that can possibly be constructed, only very few are valid argument forms. In order to evaluate these forms, statements are put into logical form . Logical form replaces any sentences or ideas with letters to remove any bias from content and allow one to evaluate the argument without any bias due to its ...

  4. Formal argument - Wikipedia

    en.wikipedia.org/?title=Formal_argument&redirect=no

    From a longer title: This is a redirect from a title that is a complete, more complete or longer version of the topic's name.It leads to the title in accordance with the naming conventions for common names and can help writing and searches.

  5. Validity (logic) - Wikipedia

    en.wikipedia.org/wiki/Validity_(logic)

    Formal arguments that are invalid are often associated with at least one fallacy which should be verifiable. A standard view is that whether an argument is valid is a matter of the argument's logical form. Many techniques are employed by logicians to represent an argument's logical form.

  6. Argument - Wikipedia

    en.wikipedia.org/wiki/Argument

    An argument is formally valid if and only if the denial of the conclusion is incompatible with accepting all the premises. In formal logic, the validity of an argument depends not on the actual truth or falsity of its premises and conclusion, but on whether the argument has a valid logical form.

  7. Glossary of rhetorical terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_rhetorical_terms

    Panegyric – a formal public speech, delivered in high praise of a person or thing. Paradeigma – argument created by a list of examples that leads to a probable generalized idea. Paradiastole – redescription, usually in a better light. Paradox – an apparently absurd or self-contradictory statement or proposition.

  8. Logical form - Wikipedia

    en.wikipedia.org/wiki/Logical_Form

    A logical argument, seen as an ordered set of sentences, has a logical form that derives from the form of its constituent sentences; the logical form of an argument is sometimes called argument form. [6] Some authors only define logical form with respect to whole arguments, as the schemata or inferential structure of the argument. [7]

  9. Formal fallacy - Wikipedia

    en.wikipedia.org/wiki/Formal_fallacy

    While a logical argument is a non sequitur if, and only if, it is invalid, the term "non sequitur" typically refers to those types of invalid arguments which do not constitute formal fallacies covered by particular terms (e.g., affirming the consequent). In other words, in practice, "non sequitur" refers to an unnamed formal fallacy.