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Quasi-syllogism is a term that is sometimes used to describe what might be otherwise called a categorical syllogism but 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, 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. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Quasi-syllogism」の詳細全文を読む スポンサード リンク
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