Page 9 - Textos de Matemática Vol. 34

CONTENTS
David E. Edmunds
Remarks on Sobolev Embeddings 1
Lu´ıs Daniel de Abreu
Connecting Basic Bessel Functions 13
Ant´onio J. G. Bento
Interpolation Theory and s-Numbers 21
Am´ılcar Branquinho
The Christoffel-Darboux Identity for Matrix Orthonormal Polynomials 33
Ant´onio M. Caetano
Subatomic Representation of Bessel Potential Spaces Modelled on Lorentz Spaces 37
Sheila Carter and F. J. Craveiro de Carvalho
Minimal Universality and Michaellike Spaces 49
Susana D. Moura
On the Problem of the Negative Spectrum 55
Ju´lio S. Neves
A Survey on Embeddings of Bessel-potential-type Spaces 75
Jos´e Carlos Petronilho
Topological Aspects in the Theory of Orthogonal Polynomials and an Inverse Problem 91
Jaime Carvalho e Silva
The Teaching of Mathematics in the University of Coimbra in the 19th Century 109
Jos´e Miguel Urbano
The Geometry of Some Nonlinear PDEs 121
PERSONAL RECOLLECTIONS 135 F. R. Dias Agudo
Como Conheci Jorge Ant´onio Sampaio Martins 137
How I Met Jorge Anto´nio Sampaio Martins 141 F. J. Craveiro de Carvalho
Louvor e Simplifica¸c˜ao de J. A. Sampaio Martins 145 Praise and Simplification of J. A. Sampaio Martins 147