Author: Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 892
Book Description
Scientific and Technical Aerospace Reports
Author: Dirac Operators in Riemannian Geometry
Author: Thomas FriedrichPublisher: American Mathematical Soc.
ISBN: 0821820559
Category : Mathematics
Languages : en
Pages : 213
Book Description
For a Riemannian manifold M, the geometry, topology and analysis are interrelated in ways that have become widely explored in modern mathematics. Bounds on the curvature can have significant implications for the topology of the manifold. The eigenvalues of the Laplacian are naturally linked to the geometry of the manifold. For manifolds that admit spin structures, one obtains further information from equations involving Dirac operators and spinor fields. In the case of four-manifolds, for example, one has the remarkable Seiberg-Witten invariants. In this text, Friedrich examines the Dirac operator on Riemannian manifolds, especially its connection with the underlying geometry and topology of the manifold. The presentation includes a review of Clifford algebras, spin groups and the spin representation, as well as a review of spin structures and $\textrm{spin}mathbb{C}$ structures. With this foundation established, the Dirac operator is defined and studied, with special attention to the cases of Hermitian manifolds and symmetric spaces. Then, certain analytic properties are established, including self-adjointness and the Fredholm property. An important link between the geometry and the analysis is provided by estimates for the eigenvalues of the Dirac operator in terms of the scalar curvature and the sectional curvature. Considerations of Killing spinors and solutions of the twistor equation on M lead to results about whether M is an Einstein manifold or conformally equivalent to one. Finally, in an appendix, Friedrich gives a concise introduction to the Seiberg-Witten invariants, which are a powerful tool for the study of four-manifolds. There is also an appendix reviewing principal bundles and connections. This detailed book with elegant proofs is suitable as a text for courses in advanced differential geometry and global analysis, and can serve as an introduction for further study in these areas. This edition is translated from the German edition published by Vieweg Verlag.
Kl3 Decays
Author: Anna J. CalpacasPublisher:
ISBN:
Category : Kaons
Languages : en
Pages : 32
Book Description
Relativistic Channeling
Author: R. A. CarriganPublisher: Springer Science & Business Media
ISBN: 9780306426896
Category : Science
Languages : en
Pages : 552
Book Description
Channeling, by its nature, involves a wide and disparate range of disciplines. Crystal preparation, material science, accelerator physics, sophisticated theoretical analysis and, of course, channeling itself all must work in concert in a research program. In spite of the gulfs separating some of these activities, researchers have drawn together over the last decade to carry out remarkable experiments in relativistic channeling and channeling radiation. Several informal workshops on high-energy channeling have been held over ~he years at Aarhus and Fermilab. However, with the vigorous progress in the field in the last several years it became clear that a more formal, comprehensive workshop was needed along with a book that covered the whole spectrum of the new developments, probed the future, and also laid out some of the foundations of the subject. This volume is the outcome of that process. The organization and preparation of both the volume and the workshop owe much to several outstanding scientific committees. The membership of these included J. Andersen (Aarhus), S. Baker (Fermilab), B. Berman (G. Washington), G. Bologna (Torino), E. Bonderup (Aarhus), S. Datz (Oak Ridge), J. Forster (Chalk River), F. Fujimoto (Tokyo), W. Gibson (Albany), I. Mitchell (Chalk River), Y. Ohtsuki (Waseda), R. Pantell (Stanford), S. Picraux (Sandia), J. Remillieux (Lyon), A. Saenz (NRL), V. Schegelsky (Gatchina), C. Sun (Albany), H. tiberall (Catholic U. ), E. Uggerh¢j (CERN), and R. Wedell (Humboldt). Others from across the spectrum of scientific disciplines agreed to serve as session chairmen.
Crimea in War and Transformation
Author: Mara KozelskyPublisher:
ISBN: 0190644710
Category : History
Languages : en
Pages : 297
Book Description
Crimea in War and Transformation is the first exploration of the civilian experience during the Crimean War to appear in English. Beginning with Russian mobilization in 1852 and lasting through demobilization in 1857, the conflict devastated the peoples and landscapes of Crimea as well as the volatile southern borderlands of the Russian Empire, leading to the largest war recovery program yet undertaken by the Russian government.
USS Alabama
Author: Karyn W. TunksPublisher: Pelican Publishing Company
ISBN: 9781455627769
Category : Juvenile Nonfiction
Languages : en
Pages : 0
Book Description
Home to thousands of US sailors, the USS Alabama fought bravely in World War II, but after she finished her service, the battleship was set to be scrapped. The people of Alabama decided they had to save the ship named for their proud state. No one was more determined than Alabama's schoolchildren. Author Karyn Tunks traces the story of the children's efforts in this informative and entertaining account. Tunks reveals a wealth of detail about life at sea before the ship was decommissioned and the many challenges Alabamians faced in securing the ship's permanent home. Artist Julie Dupré Buckner captures the feeling of the era in her detailed, vivid illustrations of the ship, those who called her home, and those who saved her for future generations. Complete with a glossary, illustrated ship's diagram, and timeline, USS Alabama: Hooray for the Mighty A! offers beginning readers a glimpse of the fascinating history of the battleship and how even the smallest of actions can produce incredible results.
Blue-Collar Conservatism
Author: Timothy J. LombardoPublisher: University of Pennsylvania Press
ISBN: 0812224833
Category : History
Languages : en
Pages : 328
Book Description
Blue-Collar Conservatism examines the blue-collar, white supporters of Frank Rizzo—Philadelphia's police commissioner turned mayor—and shows how the intersection of law enforcement and urban politics created one of the least understood but most consequential political developments in recent American history.
Crisis Cultures
Author: Brian S. WhitenerPublisher: University of Pittsburgh Press
ISBN: 082298685X
Category : History
Languages : en
Pages : 309
Book Description
Drawing on a mix of political, economic, literary, and filmic texts, Crisis Cultures challenges current cultural histories of the neoliberal period by arguing that financialization, and not just neoliberalism, has been at the center of the dramatic transformations in Latin American societies in the last thirty years. Starting from political economic figures such as crisis, hyperinflation, credit, and circulation and exemplary cultural texts, Whitener traces the interactions between culture, finance, surplus populations, and racialized state violence after 1982 in Mexico and Brazil. Crisis Cultures makes sense of the emergence of new forms of exploitation and terrifying police and militarized violence by tracking the cultural and discursive forms, including real abstraction and the favela and immaterial cadavers and voided collectivities, that have emerged in the complicated aftermath of the long downturn and global turn to finance.
Gender Identity, Sexual Orientation, and Sexual Assault
Author: Corina SchulzePublisher: Lynne Rienner Publishers
ISBN: 9781626377783
Category : Gender identity
Languages : en
Pages : 235
Book Description
Environmental Security
Author: John M. LanicciPublisher:
ISBN: 9781944970413
Category : Environmental management
Languages : en
Pages : 0
Book Description
Security threats today are increasingly complex, dynamic, and asymmetric, and can affect environmental factors like energy, water, and food supply. As a result, it is becoming evident that the traditional model of nation-state based security is incomplete, and that purely military capabilities, though necessary, are insufficient to protect the United States and other democracies from the array of threats that challenge liberty and the free flow of people and commerce. A more complete picture of modern national security requires a more complete integration of the question of environmental security. The purpose of text is to better address the many aspects of environmental security and to represent this major area of academic research in an introductory text format that can be used in the rapidly growing number of homeland security studies programs as well as related degree programs. The concepts, challenges, and case studies in this text vitally extended such curricula, giving students a deeper appreciation for the critical role environmental security plays in overall state security, as well as for our nation, our way of life, and indeed for the human race at large.