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In Deductive Logic propositions and Words are divided into
"modified" and "determined" ones. "Possesion and privation" is discussed
wherein as well. The author attempts to prove this claim that in logic books, ranging from Aristotle to the recent books, all three topics are
mistaken. Muslims confused Aristotle _ s terms with existing terms in logic books and therefore made mistakes in their concepts. In this


article, therofere, Determined and Modified, basis of distinctio .._ between these terms, modified propositions, contradictory propositions,
possession and privation would be discuced.