Aldo Belleni-Morante started to write this book in February 2008 giving two provisional titles: Semigroups and Evaluation Equations in Locally Convex Spaces: An Introduction or Applied Semigroups in Locally Convex Spaces and, he seemed on hurry for finishing it. He decided to share his scientific viewpoint with the Scottish colleagues Prof. Adam C. McBride (AMB) and Dr Wilson Lamb (WL) from the Strathclyde University. He fully desired this collaboration as a consequence of some previous scientific works undertaken since 2006 at the Strathclyde University along his appointment as Permanent Visiting Professor. He also considered the very early conception of this book since 2005 when he spent his latest sabbatical year in Glasgow and further in 2007 when Adam McBride came to Florence to work on this. But not much work was done at that time. To this end, Aldo started happily on his own research work to write the book and he completed his first part in 2008. Unfortunately, the first health problems arisen and this book stayed unfinished.

«Finally the scientific work of Aldo Belleni shows that he was one of the best applied analysts/ mathematician in Italy, combining physical intuitions and interest for scientific developments in many fields with mathematical rigour.»