Gerhard Gentzen (1909–1945) is the founder of modern structural proof theory. His lasting methods, rules, and structures resulted not only in the technical mathematical discipline called “proof theory” but also in verification programs that are essential in computer science. The appearance, clarity, and elegance of Gentzen's work on natural deduction, the sequent calculus, and ordinal proof theory continue to be impressive even today. The present book gives the first comprehensive, detailed, accurate scientific biography expounding the life and work of Gerhard Gentzen, one of our greatest logicians, until his arrest and death in Prague in 1945. Particular emphasis in the book is put on the conditions of scientific research, in this case mathematical logic, in National Socialist Germany, the ideological fight for “German logic”, and their mutual protagonists. Numerous hitherto unpublished sources, family documents, archival material, interviews, and letters, as well as Gentzen's lectures for the mathematical public, make this book an indispensable source of information on this important mathematician, his work, and his time. The volume is completed by two deep substantial essays by Jan von Plato and Craig Smoryński on Gentzen's proof theory; its relation to the ideas of Hilbert, Brouwer, Weyl, and Gödel; and its development up to the present day. Smoryński explains the Hilbert program in more than the usual slogan form and shows why consistency is important. Von Plato shows in detail the benefits of Gentzen's program. This important book is a self-contained starting point for any work on Gentzen and his logic. The book is accessible to a wide audience with different backgrounds and is suitable for general readers, researchers, students, and teachers.
This study shows that Cervantes’s works actively influenced the literature of a number of twentieth- and early twenty-first-century writers in Germany, Austria, and Switzerland. This time period was marked by numerous significant events, including World War I, the first attempts at democracy, the rise of the Nazis, World War II, the division of Germany, and the eventual reunification of Germany. Representations of characters created by Cervantes reflect the shifting viewpoints of monarchism, imperialism, communism, fascism, socialism, and capitalism. A number of German-speaking authors of this time creatively modify Don Quixote, vacillating between regarding Don Quixote as a fool or a hero. The emphasis here is on the question of how an author uses Cervantes’s Don Quixote and The Conversation of the Dogs to come to terms with his or her own preoccupations in a given socio-political context. This book explores literary works by German-speaking authors that engage in an intertextual play with a text written by Cervantes.
Grinding offers capabilities that range from high-rate material removal to high-precision superfinishing, and has become one of the most widely used industrial machining and surface finishing operations. Reflecting modern developments in the science and practice of modern grinding processes, the Handbook of Machining with Grinding Wheels presents a
Evolutionary aesthetics is the attempt to understand the aesthetic judgement of human beings and their spontaneous distinction between "beauty" and "ugliness" as a biologically adapted ability to make important decisions in life. The hypothesis is - both in the area of "natural beauty" and in sexuality, with regard to landscape preferences, but also in the area of "artificial beauty" (i.e. in art and design) - that beauty opens up fitness opportunities, while ugliness holds fitness risks. In this book, this adaptive view of aesthetics is developed theoretically, presented on the basis of numerous examples, and its consequences for evolutionary anthropology are illuminated.
Kant declared that philosophy began in 1781 with his Critique of Pure Reason. In 1806 Hegel announced that philosophy had now been completed. Eckart Förster examines the reasons behind these claims and assesses the steps that led in such a short time from Kant's "(Bbeginning" to Hegel's "(Bend." He concludes that, in an unexpected yet significant sense, both Kant and Hegel were indeed right. The Twenty-Five Years of Philosophy follows the unfolding of a key idea during this exceptionally productive period: the Kantian idea that philosophy can be scientific and, consequently, can be completed. Förster's study combines historical research with philosophical insight and leads him to propose a new thesis. The development of Kant's transcendental philosophy in his three Critiques, Förster claims, resulted in a fundamental distinction between "(Bintellectual intuition" and "(Bintuitive understanding." Overlooked until now, this distinction yields two takes on how to pursue philosophy as science after Kant. One line of thought culminates in Fichte's theory of freedom (Wissenschaftslehre), while the other--and here Förster brings Goethe's significance to the fore--results in Goethe's transformation of the Kantian idea of an intuitive understanding in light of Spinoza's third kind of knowledge. Both strands are brought together in Hegel and propel his split from Schelling. Förster's work makes an original contribution to our understanding of the classical era of German philosophy--an expanding interest within the Anglophone philosophical community.
Taking up the historical evolution of Darwin and his theories and the cultural responses they have inspired, Reflecting on Darwin poses the following questions: 'How are the apparatuses in the mid-nineteenth century and at the turn of the twenty-first century interconnected with bio-scientific paradigms in art, literature, culture and science?' 'How are naturalism, determinism and Darwinism - the eugenics of the nineteenth century and the genetic coding of the twentieth century - positioned, embodied and staged in various media configurations and media genres?' and 'How have particular media apparatuses formed, displaced or stabilized the various concepts of humankind in the framework of evolutionary theory?' Ranging from the early circulation of Darwin’s ideas to the present, this interdisciplinary collection pays particular attention to Darwin’s postmillennial reception. Beginning with an overview of the historical development of contemporary ecological and ethical fears, Reflecting on Darwin then turns to Darwin’s influence on contemporary media, neo-Victorian literature and culture, science fiction literature and film, and contemporary theory. In examining the plurality of ways in which Darwin has been rewritten and reappropriated, this unique volume both mirrors and inspects the complexity of recent debates in Victorian and neo-Victorian studies.
Mathematics is undoubtedly the key to state-of-the-art high technology. It is aninternationaltechnicallanguageandprovestobeaneternallyyoungscience to those who have learned its ways. Long an indispensable part of research thanks to modeling and simulation, mathematics is enjoying particular vit- ity now more than ever. Nevertheless, this stormy development is resulting in increasingly high requirements for students in technical disciplines, while general interest in mathematics continues to wane at the same time. This book and its appendices on the Internet seek to deal with this issue, helping students master the di?cult transition from the receptive to the productive phase of their education. The author has repeatedly held a three-semester introductory course - titled Higher Mathematics at the University of Stuttgart and used a series of “handouts” to show further aspects, make the course contents more motiv- ing, and connect with the mechanics lectures taking place at the same time. One part of the book has more or less evolved from this on its own. True to the original objective, this part treats a variety of separate topics of varying degrees of di?culty; nevertheless, all these topics are oriented to mechanics. Anotherpartofthisbookseekstoo?eraselectionofunderstandablereal- ticmodelsthatcanbeimplementeddirectlyfromthemultitudeofmathema- calresources.TheauthordoesnotattempttohidehispreferenceofNumerical Mathematics and thus places importance on careful theoretical preparation.
The Unidroit Principles of International Commercial Contracts provide an excellent and practice proven tool for cross-border contracts: They constitute a neutral and pragmatic business oriented contractual regime for cross-border contracts They contain multiple solutions to typical contractual questions regarding the life of a contract, often by way of a compromise between civil and common law They have been referenced in hundreds of decisions of arbitral tribunals or national state courts They have been endorsed inter alia by the United Nations Commission on International Trade Law (last in 2021) and the Union Internationale des Avocats (2020) bringing together through its bar association and individual members approximately two million lawyers in more than 110 countries. Thirty years after their first publication, it is arguably malpractice to ignore them. In this fully revised and enlarged 2nd edition, the commentary continues to analyse the Unidroit Principles article by article from a practical perspective, while always discussing alternative courses of action, where they apply. The commentary includes proposals for choice of the Unidroit Principles’ clauses and practical guidance for their use as template, or to supplement the CISG or national law. In addition to arbitral and state court decisions and recent literature, the 2nd edition includes an in-depth analysis of extensive legislative material. The author is a German practitioner with international training and familiarity with both common and civil law. He has been admitted to the New York Bar and also teaches at the University of Hamburg as a Professor of Law. The author is using the Unidroit Principles for more than 20 years in his commercial and arbitration practice, in recent years on a daily basis in multiple industries. As he shares his experience under the Unidroit Principles, the commentary can also be used as a practical guide and checklist of issues to consider in international contracting. Die Unidroit Principles of International Commercial Contracts sind das ideale Instrument für grenzüberschreitende Verträge: sie bilden ein neutrales, pragmatisches und wirtschaftsorientiertes Regime für grenzüberschreitende Verträge sie enthalten zahlreiche praxisnahe Lösungen für übliche Vertragsfragen und versöhnen dabei Civil Law und Common Law Unidroit Principles werden in zahlreichen Entscheidungen von Schiedsgerichten oder nationalen Gerichten zitiert u.a. befürwortet von der Kommission der Vereinten Nationen für internationales Handelsrecht (zuletzt 2021) und der Union Internationale des Avocats (2020), die über ihre Anwaltskammern und Einzelmitglieder rund zwei Millionen Anwälte in mehr als 110 Ländern vereinen. Nach dreißig Jahren Anwendung in der Praxis kann es sich rächen, die Unidroit Principles zu ignorieren! Die vollständig überarbeiteten und erweiterte 2. Auflage des Kommentars analysiert weiterhin die Unidroit Principles, Artikel für Artikel, aus Sicht des Praktikers. Alternative Handlungsmöglichkeiten werden dort erörtert, wo sie sinnvoll und anwendbar sind. Der Kommentar enthält Vorschläge für die Wahl der Klauseln der Unidroit Principles und praktische Anleitungen für deren Verwendung, auch als Vorlage oder zur Ergänzung des CISG oder des nationalen Rechts. Neben Schiedsgerichts- und staatlichen Gerichtsentscheidungen sowie aktueller Literatur enthält die 2. Auflage eine eingehende Analyse des umfangreichen Gesetzesmaterials. Als deutscher Praktiker mit internationaler Ausbildung ist der Autor mit dem Common Law und dem Civil Law bestens vertraut. Er ist als Rechtsanwalt in New York zugelassen und lehrt als Professor für Rechtswissenschaften an der Universität Hamburg. Der Autor wendet die Unidroit Principles seit 20 Jahren in seiner täglichen Handels- und Schiedsgerichtspraxis an. Aufgrund zahlreicher Berichterstattung aus der Praxis bietet der Kommentar zugleich ein Handbuch und Checklisten zum allgemeinen Schuldrecht in grenzübergreifenden Fällen.
We describe people who are “consumed” or “devoured” by ambition as if by a predator or an out-of-control inferno. Thinkers since deepest antiquity have raised these questions, approaching the subject of ambition with ambivalence and often trepidation-as when the ancient Greek poet Hesiod proposed a differentiation between the good and the bad goddess Eris. Indeed, ambition as a longing for immortal fame seems to be one of the unique hallmarks of the human species. While philosophy has touched only occasionally on the problem of burning ambition, sociology, psychoanalysis, and world literature have provided rich and more revealing descriptions and examples of its shaping role in human history. Drawing on a long and varied tradition of writing on this topic, ranging from the works of Homer through Shakespeare, Freud, and Kafka and from the history of ancient Greece and Rome to the Italian Renaissance and up to the present day (to modernity and the current neoliberal era), Eckart Goebel explores our driving passion for recognition - that insatiable hunter in the mirror - and power.
Private as well as business assets invested in serving the company, Christmas cards in summer and desired wages for the employees! Since 2001, a lot of crazy ideas have come from the two entrepreneurs Walter Stuber and Dirk Eckart which were often greeted with disbelief. However, their success has proven their merit! In this book, the two "crazy managing directors" of Gemeinhardt Geruestbau Service GmbH in Rosswein/Saxony will explain why thinking outside of the box is so important, why failure can sometimes take you further than constant success, and how to become happy by being your own boss! The title says it all: Encouraging people on their way to self-employment, independent of their age! BEWARE: This bit of literature could change how your thinking and put you on the path to success!
This comprehensive and interdisciplinary handbook provides a bird’s-eye view of two centuries of research on secondary metabolites of the two large Solanales families, Solanaceae and Convolvulaceae. In this book they’re arranged according to their biosynthetic principles, while the occurrence and chemical structures of almost all known individual secondary metabolites are covered, which are found in hundreds of wild as well as cultivated solanaceous and convolvulaceous species.
In a series of studies over the last 30 years, Henrich has shown that Hölderlin played a decisive role in the development of philosophy from Kant to Hegel. This book includes six of Henrich's most important essays on Hölderlin.
This comprehensive review of the histopathology of the human nail will act as a masterclass for all dermatologists, dermatopathologists, and nail-interested pathologists who have to interpret histological sections of nail tissue, which can be challenging for many reasons. In addition to a wealth of illustrated examples, the text guides the reader through the specialized terminology of nail science and supplies clinical data to help reach a reliable histopathological diagnosis.
In the old industrial regions of the Ruhr District (Germany), Upper Silesia (Poland) and the Ostrava Region (Czech Republic), coal as well as iron and steel have been the economic basis for many decades. In the Ruhr District important changes already started at the end of the 1950s. In Upper Silesia and in the Ostrava Region, however, these processes started at the end of the 1980s together with the transformation of the economic and social system in these countries. Because of high unemployment, steps are taken to modernize the economy and to retrain employees. All three regions cannot develop out of their own strength, but there are programmes in order to support this process.
Spaceflight Life Support and Biospherics is the introduction to space life support systems and artificial ecosystems that has so far been lacking. It is a source of information for everyone involved in the life support system design and development process - engineers, scientists, and students - as well as all those who are simply interested in this existing discipline. The structure of this book is such that it gives step-by-step answers to the basic questions concerning life support systems on any scale - from small microbial systems to the Earth's biosphere: Why life support system development and biosphere research? How does our natural life support system, the biosphere, work? What are the environmental conditions for life support systems in space? What are the fundamental terms and requirements of life support? Which physicochemical life support subsystems currently exist? Which are the potential bioregenerative life support technologies of the future? What are life support systems of future planetary habitats going to look like? What are the experiences of the largest artificial ecosystem - Biosphere 2? What are the potential terrestrial benefits of life support development? £/LIST£
A new edition of the authoritative source on hydrazine chemistry In the past century, hydrazine, an important intermediate in the synthesis of countless chemicals with N-N bonds, has grown into a major industrial commodity with a wide range of uses. It is used as a fuel in rocket propulsion, as a boiler feedwater deoxygenating agent, and in the manufacture of foamed plastics, pharmaceuticals, and biodegradable pesticides and herbicides, to name just a few uses. Since the first edition of Hydrazine and Its Derivatives: Preparation, Properties, Applications was published in 1984, there has been considerable development in this field and many new aspects of hydrazine chemistry and applications have evolved. Offering an overview of hydrazines and their industrial applications, this book also provides a compilation of numerous references to the scientific and technical literature arranged in a systematic manner, allowing the reader to find the necessary information by accessing the pages either from the table of contents or the alphabetical subject index. Some other features of the significantly enlarged Second Edition include: Frequent "see also" cross-references/links to other relevant sections of the bookOver 8,400 references, most of which cover the period from 1980 to 1998 Extremely thorough, encyclopedia-style coverage of topics Information to aid in the design of environmentally benign, biodegradable pesticides and more energetic rocket propellants Background information on the adverse effects of pesticide residue in food Hydrazine and Its Derivatives: Preparation, Properties, Applications, Second Edition is the most comprehensive book ever published on hydrazines, and this new edition is indispensable reading material for chemists, toxicologists, environmentalists, propulsion engineers, materials engineers, and satellite builders.
The third edition of this outstanding volume has been extensively revised and enlarged to cover all new aspects in Quantum chromodynamics. It first reviews relativistic quantum field theory and details scattering theory in the framework of scalar quantum electrodynamics. The book then introduces the gauge theory of quarks and gluons. In addition, more advanced chapters present a through discussion of perturbative and nonperturbative techniques in state-of-the-art QCD. Throughout, worked-out examples provide hands-on experience for students in theoretical physics. Research scientists will also find the book an ideal reference.
This is the first book to give a comprehensive overview of recent observational and theoretical results on solar wind structures and fluctuations and magnetohydrodynamic waves and turbulence, preference being given to phenomena in the inner heliosphere. Emphasis is placed on the progress made in the past decade in the understanding of the nature and origin of especially small-scale, compressible and incompressible fluctuations. Turbulence models describing the spatial transport and spectral transfer of the fluctuations in the inner heliosphere are discussed. Intermittency of solar wind fluctuations and their statistical distributions are investigated. Studies of the heating and acceleration effects of the turbulence on the background wind are critically surveyed. Finally, open questions concerning the origin, nature and evolution of the fluctuations are listed, and perspectives for future research are outlined. The book is for graduate students and researchers in the field. Other target groups are scientists and professionals interested in space plasma physics and/or MHD turbulence.
A new edition of the authoritative source on hydrazine chemistry In the past century, hydrazine, an important intermediate in the synthesis of countless chemicals with N-N bonds, has grown into a major industrial commodity with a wide range of uses. It is used as a fuel in rocket propulsion, as a boiler feedwater deoxygenating agent, and in the manufacture of foamed plastics, pharmaceuticals, and biodegradable pesticides and herbicides, to name just a few uses. Since the first edition of Hydrazine and Its Derivatives: Preparation, Properties, Applications was published in 1984, there has been considerable development in this field and many new aspects of hydrazine chemistry and applications have evolved. Offering an overview of hydrazines and their industrial applications, this book also provides a compilation of numerous references to the scientific and technical literature arranged in a systematic manner, allowing the reader to find the necessary information by accessing the pages either from the table of contents or the alphabetical subject index. Some other features of the significantly enlarged Second Edition include: Frequent "see also" cross-references/links to other relevant sections of the bookOver 8,400 references, most of which cover the period from 1980 to 1998 Extremely thorough, encyclopedia-style coverage of topics Information to aid in the design of environmentally benign, biodegradable pesticides and more energetic rocket propellants Background information on the adverse effects of pesticide residue in food Hydrazine and Its Derivatives: Preparation, Properties, Applications, Second Edition is the most comprehensive book ever published on hydrazines, and this new edition is indispensable reading material for chemists, toxicologists, environmentalists, propulsion engineers, materials engineers, and satellite builders.
This unique atlas is the most comprehensive and up-to-date reference of laser scanning ophthalmoscopy. It is ideal for residents and general ophthalmologists who want to enhance their diagnostic skills. The atlas contains superb images of all clinically relevant diseases diagnosed by current models of the Heidelberg Retina Tomograph. It correlates classical diagnostic tools such as perimetry, tonometry and fundus photography with state-of-the-art studies including digital retinal angiography, optical coherence tomography and laser scanning tomography. Special features include the illustrated coverage of diseases of the optic nerve head; different types and stages of glaucoma, and other topics.
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