The book The E. M. Stein Lectures on Hardy Spaces is based on a
graduate course on real variable Hardy spaces which was given by E.M.
Stein at Princeton University in the academic year 1973-1974. Stein,
along with C. Fefferman and G. Weiss, pioneered this subject area,
removing the theory of Hardy spaces from its traditional dependence on
complex variables, and to reveal its real-variable underpinnings.
This book is based on Steven G. Krantz's notes from the course given by
Stein. The text builds on Fefferman's theorem that BMO is the dual of
the Hardy space. Using maximal functions, singular integrals, and
related ideas, Stein offers many new characterizations of the Hardy
spaces. The result is a rich tapestry of ideas that develops the theory
of singular integrals to a new level. The final chapter describes the
major developments since 1974.
This monograph is of broad interest to graduate students and researchers
in mathematical analysis. Prerequisites for the book include a solid
understanding of real variable theory and complex variable theory. A
basic knowledge of functional analysis would also be useful.