springer new york springer us jan 1973 (10 résultats)

Taschenbuch. Etat : Neu. Neuware -This book is designed to introduce the reader to the theory of semisimple Lie algebras over an algebraically closed field of characteristic 0, with emphasis on representations. A good knowledge of linear algebra (including eigenvalues, bilinear forms, euclidean spaces, and tensor products of vector spaces) is presupposed, as well as some acquaintance with the methods of abstract algebra. The first four chapters might well be read by a bright undergraduate; however, the remaining three chapters are admittedly a little more demanding. Besides being useful in many parts of mathematics and physics, the theory of semisimple Lie algebras is inherently attractive, combining as it does a certain amount of depth and a satisfying degree of completeness in its basic results. Since Jacobson's book appeared a decade ago, improvements have been made even in the classical parts of the theory. I have tried to incor porate some of them here and to provide easier access to the subject for non-specialists. For the specialist, the following features should be noted: (I) The Jordan-Chevalley decomposition of linear transformations is emphasized, with 'toral' subalgebras replacing the more traditional Cartan subalgebras in the semisimple case. (2) The conjugacy theorem for Cartan subalgebras is proved (following D. J. Winter and G. D. Mostow) by elementary Lie algebra methods, avoiding the use of algebraic geometry.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 196 pp. Englisch.

Buch. Etat : Neu. Neuware -This book is designed to introduce the reader to the theory of semisimple Lie algebras over an algebraically closed field of characteristic 0, with emphasis on representations. A good knowledge of linear algebra (including eigenvalues, bilinear forms, euclidean spaces, and tensor products of vector spaces) is presupposed, as well as some acquaintance with the methods of abstract algebra. The first four chapters might well be read by a bright undergraduate; however, the remaining three chapters are admittedly a little more demanding. Besides being useful in many parts of mathematics and physics, the theory of semisimple Lie algebras is inherently attractive, combining as it does a certain amount of depth and a satisfying degree of completeness in its basic results. Since Jacobson's book appeared a decade ago, improvements have been made even in the classical parts of the theory. I have tried to incor porate some of them here and to provide easier access to the subject for non-specialists. For the specialist, the following features should be noted: (I) The Jordan-Chevalley decomposition of linear transformations is emphasized, with 'toral' subalgebras replacing the more traditional Cartan subalgebras in the semisimple case. (2) The conjugacy theorem for Cartan subalgebras is proved (following D. J. Winter and G. D. Mostow) by elementary Lie algebra methods, avoiding the use of algebraic geometry.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 196 pp. Englisch.

Taschenbuch. Etat : Neu. Neuware - 1 Properties of the membrane phase.- 2 Experiments pose problems.- 3 Concepts underlie models.- 4 Experimental approaches to mechanism.- 5 Appendices.- Topics for further reading.- References.

Taschenbuch. Etat : Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -1 Properties of the membrane phase.- 2 Experiments pose problems.- 3 Concepts underlie models.- 4 Experimental approaches to mechanism.- 5 Appendices.- Topics for further reading.- References. 64 pp. Englisch.

Taschenbuch. Etat : Neu. This item is printed on demand - Print on Demand Titel. Neuware -Whilst I have been writing this book two developments have been occur ring which have influenced ecological thinking, and which undoubtedly will have a great impact on ecologists in the future. One of these developments concerns the relation between the ecologist and the public. On the public's side there has been an increasing aware ness of ecological processes, and more emphasis on subjects such as the environment and pollution in newspapers and magazines. Maybe it was European Conservation Year 1970 (ECY 1970) that succeeded in stimu lating this interest. On the ecologist's side there has been a search for the relevance of his research in the world of today. The concern for relevance has been clearly reflected in the 'Comments' that have been written for the first few parts of the British Ecological Society's members' bulletin. The word 'conservation' has been widely used in the context of this relation between the public and the ecologist; indeed it might well be said that the word has been over-used, being applied to any form of protectionist operation. The second of the developments concerns the quantification of eco logical processes. Statistical analysis of experimental data has been applied for several decades, but the recent general availability of com puters has meant that mathematical analysis and computer modelling are tools that the ecologist can now use.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 420 pp. Englisch.

Taschenbuch. Etat : Neu. This item is printed on demand - Print on Demand Titel. Neuware Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 420 pp. Englisch.

Taschenbuch. Etat : Neu. This item is printed on demand - Print on Demand Titel. Neuware -1. 1. Aspects of development. usually competent to develop in several differ If you have been fortunate enough to see a fIlm ent ways. Thus the mesenchyme cells of the of the development of any multicellular organ embryonic chick limb bud may become, among ism or, better still, to watch live embyros devel other things, muscle or cartilage cells. Differen oping, the intricate beauty of the developmental tiation is largely an intracellular process involv process will not have escaped you: nor will its ing the appearance of cells with certain bio complexity. Apparent complexity, however, is chemically or cytologically recognizable charac no reason for despair when one begins to think teristics through the differential activation of in terms of analysing development. Rather, it is genes whose products confer these character istics on the cello In skeletal muscle cells for astimulus to the first and most important ana lytical step, that of simplifying the problem by example, specific proteins (actin and myosin) dividing it into aspects which can be meaning are synthesized, and arranged to give the typical fully studied. striated appearance (Fig. l. la). (Differentiation is the subject of another book in this series, The most obvious way to divide development is on a chronological basis - to begin with ferti 'Cell Differentiation' by J. M. Ashworth. ) lization and proceed through cleavage, blastu Recent advances in molecular biology have greatly stimulated research into differentiation lation and gastrulation to organ fromation.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 68 pp. Englisch.

Taschenbuch. Etat : Neu. This item is printed on demand - Print on Demand Titel. Neuware Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 120 pp. Englisch.

Taschenbuch. Etat : Neu. This item is printed on demand - Print on Demand Titel. Neuware -by by Professor Professor A. A. G. G. Everson Pearse Pearse The tide of of the Symposium, at at which the the papers which compromise this volume were presented, is ofthe utmost importance. It was not 'Fixation and Tissue Destruction' or 'Fixation 'Fixation and and Loss Loss ofTissue Components', Components', but but 'Fixation and and Tissue Tissue Preservation'. Historical Historical fixatives, fixatives, some some still still with with us us in the field oflight oflight microscopy microscopy after after over over 100 100 years, are are not not less less guilty guilty than than the the new new historical 'fixatives' of of ultrastructural ultrastructural practice practice some some ofwhich of which remove up up to to 60% 60% ofthe of the material material originally present in in the specimen and and convert the remainder into chemically inert products. There There must must be be few few histochemists histochemists who who do not not appreciate appreciate the great need need for for improve improve ments ments in in the the practice practice of of fixation, fixation, but but whence whence can can we we hopefully hopefully expect expect the arrival arrival of such such improvements improvements Apart Apart from from out out ofthe ofthe blue, or revolutionary, revolutionary, advances advances such such as as the advent advent of of glutaralde hyde, there are perhaps three principal sources.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 220 pp. Englisch.

Taschenbuch. Etat : Neu. This item is printed on demand - Print on Demand Titel. Neuware -The present lectures intend to provide an introduction to the spectral analysis of self-adjoint operators within the framework of Hilbert space theory. The guiding notion in this approach is that of spectral representation. At the same time the notion of function of an operator is emphasized. The formal aspects of these concepts are explained in the first two chapters. Only then is the notion of Hilbert space introduced. The following three chapters concern bounded, completely continuous, and non-bounded operators. Next, simple differential operators are treated as operators in Hilbert space, and the final chapter deals with the perturbation of discrete and continuous spectra. The preparation of the original version of these lecture notes was greatly helped by the assistance of P. Rejto. Various valuable suggestions made by him and by R. Lewis have been incorporated. The present version of the notes contains extensive modifica tions, in particular in the chapters on bounded and unbounded operators. February, 1973 K.O.F. PREFACE TO THE SECOND PRINTING The second printing (1980) is a basically unchanged reprint in which a number of minor errors were corrected. The author wishes to thank Klaus Schmidt (Lausanne) and John Sylvester (New York) for their lists of errors. v TABLE OF CONTENTS I. Spectral Representation 1 1. Three typical problems 1 12 2. Linear space and functional representation.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 260 pp. Englisch.