Abstract
In this paper, I have attempted to make the role of mathematical thinking clear in Husserl’s theory of sciences. Husserl believed that phenomenology could afford to provide a safe foundation for individual sciences. Hence, the first task of the project was reorganizing the system of sciences and to show the possibility of apodictic knowledge regarding the world. Husserl was inspired by the progress of mathematics at that time because mathematics is the most logical discipline and deals with abstract objects. It was the most suitable model for Husserl’s project. In fact, we can find structural similarities between his project and F. Klein’s Erlangen Program; further, the procedure of the essence intuition can be explained by a mathematical induction. Mathematics is certainly a new path for understanding Husserl’s phenomenology. In order to clarify the relation between Husserl’s theory of sciences and mathematics, this study focused on the problem of classification. Lastly, another implication of Husserl’s phenomenology as a theory of sciences is that his work is still meaningful for today’s dynamic reality of sciences.