In the spirit of the networking of didactical theories, it is advocated in this presentation in favor of a mixed networking of philosophical theories, namely Husserlian phenomenology and hermeneutics, and didactical theories to produce a fertile interplay between philosophy and mathematics education. The cross-analysis of students' work on a problem in Abstract Algebra leads to linking the notion of horizon of expectation developed by Jauss with Brousseau's didactic contract from the theory of didactical situations. It also opens up further perspectives of interrelations between dimensions of the horizon in the sense of Husserl and didactical constructs.