الدالة، الدالة الوصفية، الدالة القضوية، دالة الصدق

Abstract

The resume of discourse To attain the strict logical structure of propositions and the divers forms of reasoning, it was necessary to adjust the natural language or- if it possible-(and that is what had been) to let down completely the natural language and its sementic terms and denotations thence is discourse would become ambiguous . and remplacing it by symbolic language like the language of mathematics - we must mentioned here that mathematics in the ancient arabic culture used to be phrased in the natural language - ( works of alkawarizmi as exemple ). The difficults of the natural language advenced modernistic mathematicians to adopt symbolics .can the same revolution succeed in the logic ?.that what the discourse try to demonstrate.