 
Summary: New Publications
Graphics: RovaiWeber design, Firenze
Catalogue production: Bruna Parra
Edited by: Luisa Ferrini
Printed by: Industrie Grafiche Pacini, Pisa
© 2010 Scuola Normale Superiore Pisa
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This volume deals with the regularity theory for
elliptic systems. We may find the origin of such
a theory in two of the problems posed by David
Hilbert in his celebrated lecture delivered on
the occasion of the International Congress of
Mathematicians in 1900 in Paris:
 19th
problem: are the solutions to regular problems
in the Calculus of Variations always necessarily
analytic?
 20th
problem: does any variational problem have
a solution, provided that certain assumptions
