In this work the author extends results of rational homotopy theory to a subring of the rationale.

This book considers the theory of 'integrable' non-linear partial differential equations.

In the natural world colour is obvious and its importance in advertising the presence of flowers to pollinators and in camouflage is well known. In most cases the property of colour is due to the presence in the tissues of natural pigments. But these pigments are of much greater importance than merely to give colour, e.g. the fundamental light-harvesting molecules of photosynthesis, the light-detecting molecules of vision and haemoglobin in the blood. This book describes the structures and properties of the main groups of natural pigments, their distribution in Nature, their biosynthesis and...

Contains two plays by Cyril Tourneur.

This volume provides a selection of four plays by Philip Massinger who, from 1625 to 1640, replaced John Fletcher as principal dramatist for the King's Men, the chief London theatre company for more than forty years. The selection consists of two of Massinger's finest comedies, A New Way to Pay Old Debts and The City Madam, and his two best known tragedies, The Duke of Milan and The Roman Actor. These plays have interested readers, scholars and critics for hundreds of years, and although the tragedies have seldom been performed since the seventeenth century, the comedies have a long stage...

In the decade after this book first appeared in 1974, research involving organic photochemistry was prolific. In this updated and expanded 1986 edition the authors summarise those classes of reaction that best illustrate the types of photochemical behaviour commonly observed for simple organic molecules. The different products obtained from compounds subjected to thermal and photolytic activation are explained with the aid of appropriate diagrams and mechanistic schemes. Where necessary, these are backed up by simple energy level profiles. Thus, theory and empirical data are interwoven to...

This 1981 introduction to the chemistry of a single element, phosphorus, covers many of the major themes of chemistry.

Originally published in 1969, this book analyses the special properties of benzene and its derivatives, which give them their distinct aromatic character. The text first discusses the structure of benzene, including the light shed on it by physical methods and wave mechanics, and the structure of polycyclic benzenoid hydrocarbons and heterocyclic aromatic compounds. Aromaticity is defined as a function of the electronic structure of the molecule or ion in question and it is shown that this has important consequences in respect of bond lengths, resonance energies, electronic absorption spectra...

Originally published in 1973, this book is concerned with the principles upon which the versatility of electrophilic and nucleophilic attack on the enamine function and cycloaddition reactions are based. The discussion is illustrative rather than exhaustive, but a short bibliography contains a list of review articles from which references to the original literature can be followed. This book will be of value to anyone with an interest in enamines and the development of chemistry.

The halogens, through themselves simple inorganic molecules, react with a wide range of organic compounds, and in doing so provide new compounds in great variety and of immense practical and theoretical importance. The modes of these reactions are complex, often involving fleeting, unstable intermediates. In this 1976 book, Professor de la Mare shows how those halogenations involving the whole gamut of unsaturated organic molecules can be linked through considering them as reactions involving the development of carbocationic centres which develop through electrophilic attack by halogen and...