avicenna on the logic of sciences and industries

Our research concentrated on shaikh ibn sina (avicenna) (370-448) and his contribution in the logic of industries and sciences, he mentioned and put the sciences and its types in a chapter named (the similarities and the differences in sciences) . avicenna saw that the sciences sometimes fit and sometimes differs with each other according to its subjects ,then he go on to explain his view with logical and demonstrative steps according to a table explain the meaning of sharing between sciences, we want here to describe how avicenna listed and explained the differences and comparisons between sciences? is he depend on division of sciences (from general to particular and verse versa)?we found that avicenna made the differences in subject ,sometimes sciences defers from each other with one subject or in many subjects as we see in the difference between geometry and arithmetic which we noticed that there is no relationship between them as he said ,in the other hand some sciences have interventions with each other as we see in the relation between medicine and ethics especially in souls of mankind ,medicine specialized in the body of humans and its organs and also ethics specialized in the study of rational soul and its forces, the previous details put them in the first section of our research named (avicenna on the logic of sciences),also in this chapter we explained and clarify the opinion of avicenna in sharing industries in the (first philosophy, dialectic and sophism and how avicenna distinguished between these sciences and what are the differences and similarities ,the question here is :do these sciences which have shared in the general principles in each science or in the principles that’s rule the sciences ? the answer for this question will be found in the first section ,for the second section which titled (avicenna on the logic of industries) ,industries and its principles, objects and issues , avicenna mentioned in his book (al burhan) that each industry specially the theoretical ones has principles, objects and issues and for the principles simply they are premises which we argue these industries and we do not need to argue these premises for its clarity and magnificence ,the important question that raised in this section is :did avicenna make the difference between the principles and issues? the answer for avicenna depend on the issues of the given science and how it will be reach to be a whole principles for the other sciences depend on how we investigate these issues syllogistically .about the objects avicenna mentioned them as things that seek the industries and its self-accidentals. avicenna also talk about these issues in his book (remarks and admonitions) ,also in this research we talk about the role of induction and experience in the sciences .