Quasi-syllogism
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{{Unreferenced, date=November 2008 Quasi-syllogism is a
categorical syllogism A syllogism ( grc-gre, συλλογισμός, ''syllogismos'', 'conclusion, inference') is a kind of logical argument that applies deductive reasoning to arrive at a conclusion based on two propositions that are asserted or assumed to be true. ...
where one of the premises is ''singular'', and thus not a categorical statement. ''For example:'' #All men are mortal #Socrates is a man #Socrates is mortal In the above argument, while premise 1 is a categorical, premise 2 is a singular statement referring to one individual. While this is a valid
logical form In logic, logical form of a statement is a precisely-specified semantic version of that statement in a formal system. Informally, the logical form attempts to formalize a possibly ambiguous statement into a statement with a precise, unambiguo ...
, it is not strictly a categorical syllogism. Of course, it has been suggested that you can ''translate'' any singular statement into a categorical. ''For example:'' #Socrates is a man #All members of a class of which the only member is Socrates are men The above two premises may be considered identical, but the first is a singular and the second is a categorical.


See also

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Syllogism A syllogism ( grc-gre, συλλογισμός, ''syllogismos'', 'conclusion, inference') is a kind of logical argument that applies deductive reasoning to arrive at a conclusion based on two propositions that are asserted or assumed to be true. ...
Arguments Syllogism