Solitons are a well-known and intriguing aspect of nonlinear behavior in
a continuous system such as a fluid: a wave propagates through the
medium without distortion. Liquid crystals are highly ordered systems
without a rigid, long-range structure. Solitons in liquid crystals
(sometimes referred to as "walls") have a wide variety of remarkable
properties that are becoming important for practical applications such
as electroluminescent display. This book, the first review of the
subject to be published, contains not only surveys of the existing
literature, but presents new results as well.