Ramesh Sharma

This book provides an up-to-date introduction to the theory of manifolds, submanifolds, semi-Riemannian geometry and warped product geometry, and their applications in geometry and physics. It then explores the properties of conformal vector fields and conformal transformations, including their fixed points, essentiality and the Lichnerowicz conjecture. Later chapters focus on the study of conformal vector fields on special Riemannian and Lorentzian manifolds, with a special emphasis on general relativistic spacetimes and the evolution of conformal vector fields in terms of initial data. The book also delves into the realm of Ricci flow and Ricci solitons, starting with motivations and basic results and moving on to more advanced topics within the framework of Riemannian geometry. The main emphasis of the book is on the interplay between conformal vector fields and Ricci solitons, and their applications in contact geometry. The book highlights the fact that Nil-solitons and Sol-solitons naturally arise in the study of Ricci solitons in contact geometry. Finally, the book gives a comprehensive overview of generalized quasi-Einstein structures and Yamabe solitons and their roles in contact geometry. It would serve as a valuable resource for graduate students and researchers in mathematics and physics as well as those interested in the intersection of geometry and physics.

Etsitkö jännitystä, uusia näkökulmia tai rentouttavaa lukuelämystä? Tutustu kirjakategorioihimme ja löydä seuraava suosikkikirjasi.

This book provides an up-to-date introduction to the theory of manifolds, submanifolds, semi-Riemannian geometry and warped product geometry, and their applications in geometry and physics. It then explores the properties of conformal vector fields and conformal transformations, including their fixed points, essentiality and the Lichnerowicz conjecture. Later chapters focus on the study of conformal vector fields on special Riemannian and Lorentzian manifolds, with a special emphasis on general relativistic spacetimes and the evolution of conformal vector fields in terms of initial data. The book also delves into the realm of Ricci flow and Ricci solitons, starting with motivations and basic results and moving on to more advanced topics within the framework of Riemannian geometry. The main emphasis of the book is on the interplay between conformal vector fields and Ricci solitons, and their applications in contact geometry. The book highlights the fact that Nil-solitons and Sol-solitons naturally arise in the study of Ricci solitons in contact geometry. Finally, the book gives a comprehensive overview of generalized quasi-Einstein structures and Yamabe solitons and their roles in contact geometry. It would serve as a valuable resource for graduate students and researchers in mathematics and physics as well as those interested in the intersection of geometry and physics.

Zwischen den Zeilen: Ein kritisches Lesebuch befasst sich mit verschiedenen Themen der Literatur aus unterschiedlichen L ndern und von verschiedenen Schriftstellern. Einige davon sind Entfremdung, Identit t, Tod, Gesellschaft, Angst, Depression, Romantik, Misskommunikation, Wahnsinn, Frauen, Tr ume, Flucht, Desillusionierung, Vertreibung, kospiritualit t, Geschichte, Verbrechen, Gier, Klassenkampf und dritte Gier usw. Der Band versucht nicht, sie in bestimmte Kategorien einzuteilen, da ein einzelnes Kapitel als Intertext zu anderen gelesen und verstanden werden kann, in denen sich die Themen oft berschneiden. In den Kapiteln wird oft versucht, neue Interessengebiete in der untersuchten Literatur zu erschlie en. Manchmal wird jedoch auch das herk mmliche Verst ndnis berpr ft, nicht um es zu best tigen, sondern um es neu zu lesen und von ihm abzuweichen, um Neues zu entdecken.

Tra le righe: Una lettura critica affronta diversi temi della letteratura di diversi paesi e scrittori. Alcuni di essi sono l'alienazione, l'identit , la morte, la societ , l'ansia, la depressione, il romanticismo, la cattiva comunicazione, la follia, le donne, i sogni, la fuga, la disillusione, il dislocamento, l'eco-spirituale, la storia, il crimine, il gander, la lotta di classe e il terzo gander, ecc. Il volume non cerca di raggrupparli sotto determinate categorie, poich un singolo capitolo pu essere letto e compreso come intertesto di altri in cui i temi spesso si sovrappongono. I capitoli cercano spesso di leggere nuove aree di interesse nella letteratura in esame. A volte, tuttavia, si guarda anche alla loro comprensione convenzionale, non per rafforzarla, ma piuttosto per rileggerla e discostarsene in cerca di novit .

Entre les lignes: Un lecteur critique aborde divers th mes de la litt rature de diff rents pays et crivains. Certains d'entre eux sont l'ali nation, l'identit , la mort, la soci t , l'anxi t , la d pression, la romance, la mauvaise communication, la folie, les femmes, les r ves, l' vasion, la d sillusion, le d placement, l' co-spirituel, l'histoire, le crime, le jars, la lutte des classes et le troisi me jars, etc. Le volume n'essaie pas de les regrouper dans certaines cat gories, car un chapitre peut tre lu et compris comme l'intertexte d'autres chapitres dont les th mes se recoupent souvent. Les chapitres tentent souvent de lire de nouveaux domaines d'int r t dans la litt rature tudi e. Cependant, ils se penchent aussi parfois sur leur compr hension conventionnelle, non pas pour la renforcer, mais plut t pour la relire et s'en carter des fins de nouveaut .

Le volume Kritik s: A Reflection on Literature and Culture est le r sultat de projets de recherche litt raire d' tudiants et d'enseignants du d partement d'anglais, de l' cole des sciences humaines et sociales, de l'universit Assam Don Bosco, Assam, Inde. Les lectures critiques incluses dans ce volume sont une r ponse et une relecture de th mes vari s tels que le patriarcat, l'absurdit , le r ve, la psychologie humaine, la violence, l'identit , l'environnement, le langage, le r alisme magique, la religion et les sciences humaines num riques qui tayent la litt rature travers le temps et le monde. En cons quence, des textes comme Terrible Matriarchy, The Birthday Party, Of Mice and Men, Paradise, Norwegian Woods, These Hills Called Home, Purple Hibiscus, The Lowland, Kafka in the Shore, etc. ont t r valu s ici partir de la compr hension de nouveaux esprits critiques.

As corruption continues to be a persistent problem in India, concerned citizens believe empowered police agencies independent of political control are effective ways to deal with corrupt officials and politicians. What is corruption and how is it facilitated? What are the appropriate agencies to combat corruption professionally in India? Why are these not effective in deterring corrupt practices? Are the alternative solutions to tackle corruption successful? This book seeks to engage with these questions, discuss and analyze them, and conduct a thorough analysis of law, bureaucratic organizations, official data, case studies and comparative international institutions. It analyzes vast data to argue that a corrupt state only maintains the façade of rule of law but will not permit any inquiry beyond that of individual deviance. Using criminological perspectives, it presents a novel mechanism, the 'Doctrine of Good Housekeeping', for public officials to combat and prevent corruption within their own institutions.

This book provides an upto date information on metric, connection and curva­ ture symmetries used in geometry and physics. More specifically, we present the characterizations and classifications of Riemannian and Lorentzian manifolds (in particular, the spacetimes of general relativity) admitting metric (i.e., Killing, ho­ mothetic and conformal), connection (i.e., affine conformal and projective) and curvature symmetries. Our approach, in this book, has the following outstanding features: (a) It is the first-ever attempt of a comprehensive collection of the works of a very large number of researchers on all the above mentioned symmetries. (b) We have aimed at bringing together the researchers interested in differential geometry and the mathematical physics of general relativity by giving an invariant as well as the index form of the main formulas and results. (c) Attempt has been made to support several main mathematical results by citing physical example(s) as applied to general relativity. (d) Overall the presentation is self contained, fairly accessible and in some special cases supported by an extensive list of cited references. (e) The material covered should stimulate future research on symmetries. Chapters 1 and 2 contain most of the prerequisites for reading the rest of the book. We present the language of semi-Euclidean spaces, manifolds, their tensor calculus; geometry of null curves, non-degenerate and degenerate (light like) hypersurfaces. All this is described in invariant as well as the index form.

The continued prevalence of major incidents (most recently the 2010 BP Gulf of Mexico Oil Spill) and preponderance of workplace fatalities and injuries as well as Process Safety Management (PSM) Incidents, globally, begs the question: why do incidents continue to occur in today’s technologically advanced era? More importantly, with 80-85 percent of incidents being repeated, the more obvious questions are: Why do organizations fail to learn from prior incidents internal to the business? Why do organizations fail to learn from their peers and other same industry players? Why do organizations fail to learn from the incidents and experiences of other industries? Process Safety Management: Leveraging Networks and Communities of Practice for Continuous Improvement provides a road map organizations can use to identify and setup critical networks for preventing catastrophic incidents and for sharing knowledge in an organized manner within the organization to enhance business performance. The book helps organizations establish centers of excellence by activating networks for generating best practices and practical solutions to workplace business, and safety challenges. The book covers the full range of activation of networks including identifying members, defining goals and objectives, and prioritizing work through leadership and stewardship of networks. It addresses all elements of effective safety management and includes simple, easy-to-follow processes that bring about lasting changes to workplace safety. It also highlights the health and safety needs of both Generation X and Generation Y who currently inherit the workplace but are very different in learning behaviors and experience levels. In a thin margins business environment characterized by scarce resources, operational discipline and excellence drives stakeholder confidence and corporate performance. Detailing the practical application of tested principles and practices, this book provides a simple path forward for organizations to recognize the benefits of networks and to proactively establish and support them within organizations to generate continuous and sustained improvement in work practices, procedures, and business performance.

This book provides an upto date information on metric, connection and curva­ ture symmetries used in geometry and physics. More specifically, we present the characterizations and classifications of Riemannian and Lorentzian manifolds (in particular, the spacetimes of general relativity) admitting metric (i.e., Killing, ho­ mothetic and conformal), connection (i.e., affine conformal and projective) and curvature symmetries. Our approach, in this book, has the following outstanding features: (a) It is the first-ever attempt of a comprehensive collection of the works of a very large number of researchers on all the above mentioned symmetries. (b) We have aimed at bringing together the researchers interested in differential geometry and the mathematical physics of general relativity by giving an invariant as well as the index form of the main formulas and results. (c) Attempt has been made to support several main mathematical results by citing physical example(s) as applied to general relativity. (d) Overall the presentation is self contained, fairly accessible and in some special cases supported by an extensive list of cited references. (e) The material covered should stimulate future research on symmetries. Chapters 1 and 2 contain most of the prerequisites for reading the rest of the book. We present the language of semi-Euclidean spaces, manifolds, their tensor calculus; geometry of null curves, non-degenerate and degenerate (light like) hypersurfaces. All this is described in invariant as well as the index form.