Definition and Goal of Logic from Muslim Logician's View point.

In this essay, the author tries to classify definitions, which were offered by muslim logicians for logic, into two categories of intrinsic and derivative definitions, and to separate form and matter oriented goals from merely form directed goals that they cite for logic. Then he infers from their sayings that logic according to its definition and goal is primarily and essentially directed to not matter but form of thought, and that two parts of logic, ie, concept and assent, are basically relevant to not context of definition but of argumentation, and that the discussions concerning matter of argument and definition must be sought in other special disciplines. In this essay, also the relation between logic and syntax, and reasons of needlessness of some sciences to logic has been studied.