Nonlinear Eigenvalues and Analytic-Hypoellipticity

Quadratic Diophantine Equations

Study of the Critical Points at Infinity Arising from the Failure of the Palais-Smale Condition for n-Body Type Problems

Generalizations of the Perron-Frobenius Theorem for Nonlinear Maps

Treelike Structures Arising from Continua and Convergence Groups

Iterated Function Systems and Permutation Representations of the Cuntz Algebra

Number Theory in the Spirit of Ramanujan