"The volume originates from the Conference on Operator Theory and its Applications, held in Jurata, Poland, at the end of March 2010....The publication has been substantially delayed, while at the same time several papers written later made their way into the book. Thus the link to Jurata's conference should not be taken very formally. However ... the contents of the volume will still be of genuine interest to specialists in functional analysis, and also to young mathematicians just starting their careers"--Preface.