Reflections on Spacetime

Reflections on Spacetime PDF Author: Ulrich Majer
Publisher: Springer Science & Business Media
ISBN: 9401728720
Category : Science
Languages : en
Pages : 165

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Book Description
REFLECTIONS ON SPACETIME - FOUNDATIONS, PHILOSOPHY AND HISTORY During the academic year 1992/93, an interdisciplinary research group constituted itself at the Zentrum fUr interdisziplinare Forschung (ZiF) in Bielefeld, Germany, under the title 'Semantical Aspects of Spacetime Theories', in which philosophers and physicists worked on topics in the interpretation and history of relativity theory. The present issue consists of contributions resulting from material presented and discussed in the group during the course of that year. The scope of the papers ranges from rather specialised issues arising from general relativity such as the problem of referential indeterminacy, to foundational questions regarding spacetime in the work of Carnap, Weyl and Hilbert. It is well known that the General Theory of Relativity (GTR) admits spacetime models which are 'exotic' in the sense that observers could travel into their own past. This poses a number of problems for the physical interpretation of GTR which are also relevant in the philosophy of spacetime. It is not enough to exclude these exotic models simply by stating that we live in a non-exotic universe, because it might be possible to "operate time machines" by actively changing the topology of the future part of spacetime. In his contribution, Earman first reviews the attempts of physicists to prove "chronology protection theorems" (CPTs) which exclude the operation of time machines under reasonable assumptions.

Reflections on Spacetime

Reflections on Spacetime PDF Author: Ulrich Majer
Publisher: Springer Science & Business Media
ISBN: 9401728720
Category : Science
Languages : en
Pages : 165

Get Book Here

Book Description
REFLECTIONS ON SPACETIME - FOUNDATIONS, PHILOSOPHY AND HISTORY During the academic year 1992/93, an interdisciplinary research group constituted itself at the Zentrum fUr interdisziplinare Forschung (ZiF) in Bielefeld, Germany, under the title 'Semantical Aspects of Spacetime Theories', in which philosophers and physicists worked on topics in the interpretation and history of relativity theory. The present issue consists of contributions resulting from material presented and discussed in the group during the course of that year. The scope of the papers ranges from rather specialised issues arising from general relativity such as the problem of referential indeterminacy, to foundational questions regarding spacetime in the work of Carnap, Weyl and Hilbert. It is well known that the General Theory of Relativity (GTR) admits spacetime models which are 'exotic' in the sense that observers could travel into their own past. This poses a number of problems for the physical interpretation of GTR which are also relevant in the philosophy of spacetime. It is not enough to exclude these exotic models simply by stating that we live in a non-exotic universe, because it might be possible to "operate time machines" by actively changing the topology of the future part of spacetime. In his contribution, Earman first reviews the attempts of physicists to prove "chronology protection theorems" (CPTs) which exclude the operation of time machines under reasonable assumptions.

Foundations of Space and Time

Foundations of Space and Time PDF Author: Jeff Murugan
Publisher: Cambridge University Press
ISBN: 0521114403
Category : Science
Languages : en
Pages : 453

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Book Description
Encapsulates the latest debates on this topic, giving researchers and graduate students an up-to-date view of the field.

Travel, Time, and Space in the Middle Ages and Early Modern Time

Travel, Time, and Space in the Middle Ages and Early Modern Time PDF Author: Albrecht Classen
Publisher: Walter de Gruyter GmbH & Co KG
ISBN: 3110609703
Category : History
Languages : en
Pages : 751

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Book Description
Research on medieval and early modern travel literature has made great progress, which now allows us to take the next step and to analyze the correlations between the individual and space throughout time, which contributed essentially to identity formation in many different settings. The contributors to this volume engage with a variety of pre-modern texts, images, and other documents related to travel and the individual's self-orientation in foreign lands and make an effort to determine the concept of identity within a spatial framework often determined by the meeting of various cultures. Moreover, objects, images and words can also travel and connect people from different worlds through books. The volume thus brings together new scholarship focused on the interrelationship of travel, space, time, and individuality, which also includes, of course, women's movement through the larger world, whether in concrete terms or through proxy travel via readings. Travel here is also examined with respect to craftsmen's activities at various sites, artists' employment for many different projects all over Europe and elsewhere, and in terms of metaphysical experiences (catabasis).

On Space and Time

On Space and Time PDF Author: Alain Connes
Publisher: Cambridge University Press
ISBN: 1107641683
Category : Science
Languages : en
Pages : 306

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Book Description
Gets to the heart of science by asking a fundamental question: what is the true nature of space and time?

Einstein's Mirror

Einstein's Mirror PDF Author: Anthony J. G. Hey
Publisher: Cambridge University Press
ISBN: 9780521435321
Category : Biography & Autobiography
Languages : en
Pages : 314

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Book Description
Lavishly illustrated, fascinating and accessible introduction to Einstein's relativity for general readers, school students and undergraduates.

The Geometry of Spacetime

The Geometry of Spacetime PDF Author: James J. Callahan
Publisher: Springer Science & Business Media
ISBN: 1475767366
Category : Science
Languages : en
Pages : 474

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Book Description
Hermann Minkowski recast special relativity as essentially a new geometric structure for spacetime. This book looks at the ideas of both Einstein and Minkowski, and then introduces the theory of frames, surfaces and intrinsic geometry, developing the main implications of Einstein's general relativity theory.

Operational Symmetries

Operational Symmetries PDF Author: Heinrich Saller
Publisher: Springer
ISBN: 3319586645
Category : Science
Languages : en
Pages : 578

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Book Description
This book describes the endeavour to relate the particle spectrum with representations of operational electroweak spacetime, in analogy to the atomic spectrum as characterizing representations of hyperbolic space. The spectrum of hyperbolic position space explains the properties of the nonrelativistic atoms; the spectrum of electroweak spacetime is hoped to explain those of the basic interactions and elementary particles. In this book, the theory of operational symmetries is developed from the numbers, from Plato’s and Kepler’s symmetries over the simple Lie groups to their applications in nonrelativistic, special relativistic and general relativistic quantum theories with the atomic spectrum for hyperbolic position and, in first attempts, the particle spectrum for electroweak spacetime. The standard model of elementary particles and interactions is characterized by a symmetry group. In general, as initiated by Weyl and stressed by Heisenberg, quantum theory can be built as a theory of operation groups and their unitary representations. In such a framework, time, position and spacetime is modeled by equivalence classes of symmetry groups. For a unification on this road, the quest is not for a final theory with a basic equation for basic particles, but for the basic operation group and its representations.

The Seeing Eye

The Seeing Eye PDF Author: C. S. Lewis
Publisher: Ballantine Books
ISBN: 0345328663
Category : Philosophy
Languages : en
Pages : 0

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Book Description
C.S. Lewis presents an eloquent and colorful defense of Christianity for both devotees and critics . . . in a collection of essays composed over the last twenty years of his life. * On Christianity and culture * On religion -- is it reality or substitute? * On ethics * On the Psalms * On the language of religion * On petitionary prayer * And more! "An excellent introduction to the thought and personality of this engaging Christian writer." -- Christianity Today

Neo-Aristotelian Perspectives on Contemporary Science

Neo-Aristotelian Perspectives on Contemporary Science PDF Author: William M.R. Simpson
Publisher: Routledge
ISBN: 1351813242
Category : Philosophy
Languages : en
Pages : 352

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Book Description
The last two decades have seen two significant trends emerging within the philosophy of science: the rapid development and focus on the philosophy of the specialised sciences, and a resurgence of Aristotelian metaphysics, much of which is concerned with the possibility of emergence, as well as the ontological status and indispensability of dispositions and powers in science. Despite these recent trends, few Aristotelian metaphysicians have engaged directly with the philosophy of the specialised sciences. Additionally, the relationship between fundamental Aristotelian concepts—such as "hylomorphism", "substance", and "faculties"—and contemporary science has yet to receive a critical and systematic treatment. Neo-Aristotelian Perspectives on Contemporary Science aims to fill this gap in the literature by bringing together essays on the relationship between Aristotelianism and science that cut across interdisciplinary boundaries. The chapters in this volume are divided into two main sections covering the philosophy of physics and the philosophy of the life sciences. Featuring original contributions from distinguished and early-career scholars, this book will be of interest to specialists in analytical metaphysics and the philosophy of science.

A Quantum Groups Primer

A Quantum Groups Primer PDF Author: Shahn Majid
Publisher: Cambridge University Press
ISBN: 0521010411
Category : Mathematics
Languages : en
Pages : 183

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Book Description
Self-contained introduction to quantum groups as algebraic objects, suitable as a textbook for graduate courses.