In this paper, we study singularly perturbed Filippov systems. More specifically, our main question is to know how the dynamics of Filippov systems is affected by singular perturbations. We extend the Fenichel theory ...

O presente estudo discorre sobre o impasse da Educação na sociedade de classes. Analisa a escola como Aparelho Ideológico de Estado e sua influência no processo educativo.

Sebastião Uchoa Leite's work is circumscribed in a field of tension with tradition, which makes impossible is delimitation to anyone who seeks to draw his poetic profile. The undeniable identification with the modernist ...

This paper is concerned with a geometric study of (��n−1)-parameter families of constrained differential systems, where n≥ 2. Our main results say that the dynamics of such a family close to the impasse set is equivalent ...

The paper analyzes the regulatory framework for the Media in Brazil in the Federal Constitution and the nexus between democratization and constitutional process, interpreting relevant actors (government, political parties, ...

This paper, as the just title indicates, intends to discuss about Portuguese pedagogical contest at the end of the XIXth century and at the beginning of the XXth century. The used documentary sources were magazines specialized ...