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This book provides a detailed exposition of a wide range of topics in geometric group theory, inspired by Gromov’s pivotal work in the 1980s. It includes classical theorems on nilpotent groups and solvable groups, a fundamental study of the growth of groups, a detailed look at asymptotic cones, and a discussion of related subjects including filters and ultrafilters, dimension theory, hyperbolic geometry, amenability, the Burnside problem, and random walks on groups. The results are unified under the common theme of Gromov’s theorem, namely that finitely generated groups of polynomial growth are virtually nilpotent. This beautiful result gave birth to a fascinating new area of research wh...
Saving the environment is our collective duty. With each passing day, climate change is causing Pacific islands to disappear into the sea, accelerating the extinction of species at alarming proportions and aggravating a water shortage that has affected the entire European continent. In short, climate change can no longer be denied – it threatens our existence on earth. In this inspiring new book, the Dalai Lama, one of the most influential figures of our time, calls on political decision-makers to finally fight against deadlock and ignorance on this issue. He argues that we all need to stand up for a different and more climate-friendly world, and to allow the younger generation to assert their right to regain their future. From the voice of the beloved world religious leader comes this eye-opening manifesto that empowers the generation of today to step up, take action and protect our world.
This volume presents the analysis, English translation, and critical edition of the Latin text of The Little History of the Lombards of Benevento, thus offering an important contribution for a better understanding of early medieval southern Italian (and Mediterranean) history. In the 840s, having passed the danger of subjugation by Charlemagne, southern Italy’s Lombards experienced a bloody civil war that put an end to their unity and turned southern Italy into the playground of several competing powers: Lombard lords, the Neapolitans, the Frankish and the Byzantine Empires, the Muslims, and, sometimes, even the papacy. At the end of the ninth century, the Cassinese monk Erchempert compose...
This volume on Norman Italy (southern Italy and Sicily, c. 1000–1200) honours and reflects the pioneering scholarship of Graham A. Loud. An international group of scholars reassesses and recasts the paradigm by which Norman Italy has been conventionally understood, addressing varied subjects across four key themes: historiographies, identities and communities, religion and Church, and conquest. The chapters revise and refine our understanding of Norman Italy in the eleventh and twelfth centuries, demonstrating that it was not just a parochial Norman or Mediterranean entity but also an integral player in the medieval mainstream.
Decision making is an omnipresent, most crucial activity of the human being, and also of virtually all artificial broadly perceived “intelligent” systems that try to mimic human behavior, reasoning and choice processes. It is quite obvious that such a relevance of decision making had triggered vast research effort on its very essence, and attempts to develop tools and techniques which would make it possible to somehow mimic human decision making related acts, even to automate decision making processes that had been so far reserved for the human beings. The roots of those attempts at a scientific analysis can be traced to the ancient times but – clearly – they have gained momentum in ...
Automotive control has developed over the decades from an auxiliary te- nology to a key element without which the actual performances, emission, safety and consumption targets could not be met. Accordingly, automotive control has been increasing its authority and responsibility – at the price of complexity and di?cult tuning. The progressive evolution has been mainly ledby speci?capplicationsandshorttermtargets,withthe consequencethat automotive control is to a very large extent more heuristic than systematic. Product requirements are still increasing and new challenges are coming from potentially huge markets like India and China, and against this ba- ground there is wide consensus both i...
This book focuses on a research field that is rapidly emerging as one of the most promising ones for the global optics and photonics community: the “lab-on-fiber” technology. Inspired by the well-established "lab on-a-chip" concept, this new technology essentially envisages novel and highly functionalized devices completely integrated into a single optical fiber for both communication and sensing applications. Based on the R&D experience of some of the world's leading authorities in the fields of optics, photonics, nanotechnology, and material science, this book provides a broad and accurate description of the main developments and achievements in the lab-on-fiber technology roadmap, also highlighting the new perspectives and challenges to be faced. This book is essential for scientists interested in the cutting-edge fiber optic technology, but also for graduate students.
The increased efficiency and quality constraints imposed on electrical energy systems have inspired a renewed research interest in the study of formal approaches to the analysis and control of power electronics converters. Switched systems represent a useful framework for modeling these converters and the peculiarities of their operating conditions and control goals justify the specific classification of “switched electronic systems”. Indeed, idealized switched models of power converters introduce problems not commonly encountered when analyzing generic switched models or non-switched electrical networks. In that sense the analysis of switched electronic systems represents a source for n...
This book offers an overview of sustainability and urban mobility in the context of urban planning – topics that are of considerable interest in the development of smart cities. Environmental sustainability is universally recognized as a fundamental condition for any urban policy or urban management activity, while mobility is essential for the survival of complex urban systems. The new opportunities offered by innovations in the mobility of people, goods and information, as well as radically changing interactions and activities are transforming cities. Including contributions by urban planning scholars, the book provides an up-to-date picture of the latest studies and innovative policies ...