Constructive Function Theory Open problems in constructive function theory. From Electronic Transactions on Numerical Analysis (ETNA). Special Volume on Constructive Function Theory dedicated to Ed Saff on the occasion of his 60th birthday, Volume 25 (2006), 511525. Compiled by L. Baratchart, A. MartínezFinkelshtein, D. Jimenez, D. S. Lubinsky, H. N. Mhaskar, I. Pritsker, M. Putinar, N. Stylianopoulos, V. Totik, P. Varju, and Y. Xu. (preprints)
 Constructive Function Theory on Sets of the Complex Plane through Potential Theory and Geometric Function Theory, V. V. Andrievskii, Surveys in Approximation Theory, 2 (2006), 152.
 Some open problems in random matrix theory and the theory of integrable systems, Percy Deift. We describe a list of open problems in random matrix theory and integrable systems which was presented at the conference ``Integrable Systems, Random Matrices, and Applications'' at the Courant Institute in May 2006. arXiv.org.
 Problemas abiertos en series de Fourier de JacobiSobolev, Francisco Marcellán, Boris P. Osilenker and Ignacio A. Rocha. In this paper we dealw ith several problems concerning estimates of polynomials orthogonal with respect to Sobolev inner products. These problems have beenmotivated by some previouswork by J. J. Guadalupe et al. when the standard orthogonality using measures with mass points is considered in the study of Fourier expansions in terms of orthogonal polynomials. [in Spanish].
Famous unsolved problems and various subjects
