This book explains many fundamental ideas on the theory of
distributions. The theory of partial differential equations is one of
the synthetic branches of analysis that combines ideas and methods from
different fields of mathematics, ranging from functional analysis and
harmonic analysis to differential geometry and topology. This presents
specific difficulties to those studying this field. This second edition,
which consists of 10 chapters, is suitable for upper
undergraduate/graduate students and mathematicians seeking an accessible
introduction to some aspects of the theory of distributions. It can also
be used for one-semester course.