Stellar Astrophysics contains a selection of high-quality papers that illustrate the progress made in research into the structure and evolution of stars. Senior undergraduates, graduates, and researchers can now be brought thoroughly up to date in this exciting and ever-developing branch of astronomy.

Prefaces was the last of four books by Søren Kierkegaard to appear within two weeks in June 1844. Three Upbuilding Discourses and Philosophical Fragments were published first, followed by The Concept of Anxiety and its companion--published on the same day--the comically ironic Prefaces. Presented as a set of prefaces without a book to follow, this work is a satire on literary life in nineteenth-century Copenhagen, a lampoon of Danish Hegelianism, and a prefiguring of Kierkegaard's final collision with Danish Christendom. Shortly after publishing Prefaces, Kierkegaard began to prepare Writing Sampler as a sequel. Writing Sampler considers the same themes taken up in Prefaces but in yet a more ironical and satirical vein. Although Writing Sampler remained unpublished during his lifetime, it is presented here as Kierkegaard originally envisioned it, in the company of Prefaces.

Part 2 contains sections on Automorphic representations and $L$-functions, Arithmetical algebraic geometry and $L$-functions

This is the first book about commutative semigroups in general. Emphasis is on structure but the other parts of the theory are at least surveyed and a full set of about 850 references is included. The book is intended for mathematicians who do research on semigroups or who encounter commutative semigroups in their research.