We start this work by recalling a class of globally hypoelliptic sublaplacians defined on the N-dimensional torus introduced by Cordaro and Himonas in 1994 and studied by Himonas and Petronilho in 2000. We consider a new ...

This thesis is concerned with the orbital instability for a specific class of periodic traveling wave solutions with the mean zero related to the modified Camassa-Holm equation. These solutions, called snoidal waves, are ...

In this work we proof, by compactness methods, a local and global existence result for p-laplacian diferential inclusions with p > 2. Most of relevant theorems we need are in this text, including Monotone and Multivalued Operators ...

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Mathematical Analysis; Littlewood-Paley's decomposition; Bony's decomposition; Navier-Stokes's system

In this thesis, we study equations that involving the Dirac operator and which have the form $-i \alpha \cdot \nabla u + a \beta u + M(x)u = F_{u}(x,u), em \mathbb{R}^{3},$ where $\alpha = (\alpha_1, \alpha_2, \alpha_3),$ ...