New Paths Towards Quantum Gravity
New Paths Towards Quantum Gravity

Author: Bernhelm Booß-Bavnbek

Publisher: Springer Science & Business Media

Published: 2010-06-04

Total Pages: 372

ISBN-13: 3642118968

DOWNLOAD EBOOK

Aside from the obvious statement that it should be a theory capable of unifying general relativity and quantum field theory, not much is known about the true nature of quantum gravity. New ideas - and there are many of them for this is an exciting field of research - often diverge to a degree where it seems impossible to decide in which of the many possible direction(s) the ongoing developments should be further sustained. The division of the book in two (overlapping) parts reflects the duality between the physical vision and the mathematical construction. The former is represented by tutorial reviews on non-commutative geometry, on space-time discretization and renormalization and on gauge field path integrals. The latter one by lectures on cohomology, on stochastic geometry and on mathematical tools for the effective action in quantum gravity. The book will benefit everyone working or entering the field of quantum gravity research.

Parabolicity, Volterra Calculus, and Conical Singularities
Parabolicity, Volterra Calculus, and Conical Singularities

Author: Sergio Albeverio

Publisher: Springer Science & Business Media

Published: 2002

Total Pages: 380

ISBN-13: 9783764369064

DOWNLOAD EBOOK

Volterra Families of Pseudodifferential Operators.- 1. Basic notation and general conventions.- 1.1. Sets of real and complex numbers.- 1.2. Multi-index notation.- 1.3. Functional analysis and basic function spaces.- 1.4. Tempered distributions and the Fourier transform.- 2. General parameter-dependent symbols.- 2.1. Asymptotic expansion.- 2.2. Homogeneity and classical symbols.- 3. Parameter-dependent Volterra symbols.- 3.1. Kernel cut-off and asymptotic expansion.- 3.2. The translation operator in Volterra symbols.- 4. The calculus of pseudodifferential operators.- 4.1. Elements of the calculus.- 4.2. The formal adjoint operator.- 4.3. Sobolev spaces and continuity.- 4.4. Coordinate invariance.- 5. Ellipticity and parabolicity.- 5.1. Ellipticity in the general calculus.- 5.2. Parabolicity in the Volterra calculus.- References.- The Calculus of Volterra Mellin Pseudodifferential Operators with Operator-valued Symbols.- 1. Preliminaries on function spaces and the Mellin transform.- 1.1. A Paley-Wiener type theorem.- 1.2. The Mellin transform in distributions.- 2. The calculus of Volterra symbols.- 2.1. General anisotropic and Volterra symbols.- 2.1.1. Hilbert spaces with group-actions.- 2.1.2. Definition of the symbol spaces.- 2.1.3. Asymptotic expansion.- 2.1.4. The translation operator in Volterra symbols.- 2.2. Holomorphic Volterra symbols.- 3. The calculus of Volterra Mellin operators.- 3.1. General Volterra Mellin operators.- 3.2. Continuity in Mellin Sobolev spaces.- 3.3. Volterra Mellin operators with analytic symbols.- 4. Kernel cut-off and Mellin quantization.- 4.1. The Mellin kernel cut-off operator.- 4.2. Degenerate symbols and Mellin quantization.- 5. Parabolicity and Volterra parametrices.- 5.1. Ellipticity and parabolicity on symbolic level.- 5.2. The parametrix construction.- References.- On the Inverse of Parabolic Systems of Partial Differential Equations of General Form in an Infinite Space-Time Cylinder.- 1. Preliminary material.- 1.1. Basic notation and general conventions.- Functional analysis and basic function spaces.- Preliminaries on function spaces and the Mellin transform.- Global analysis.- 1.2. Finitely meromorphic Fredholm families in ?-algebras.- 1.3. Volterra integral operators.- Some notes on abstract kernels.- 2. Abstract Volterra pseudodifferential calculus.- 2.1. Anisotropic parameter-dependent symbols.- Asymptotic expansion.- Classical symbols.- 2.2. Anisotropic parameter-dependent operators.- Elements of the calculus.- Ellipticity and parametrices.- Sobolev spaces and continuity.- Coordinate invariance.- 2.3. Parameter-dependent Volterra symbols.- Kernel cut-off and asymptotic expansion of Volterra symbols.- The translation operator in Volterra symbols.- 2.4. Parameter-dependent Volterra operators.- Elements of the calculus.- Continuity and coordinate invariance.- Parabolicity for Volterra pseudodifferential operators.- 2.5. Volterra Mellin calculus.- Continuity in Mellin Sobolev spaces.- 2.6. Analytic Volterra Mellin calculus.- Elements of the calculus.- The Mellin kernel cut-off operator and asymptotic expansion.- Degenerate symbols and Mellin quantization.- 2.7. Volterra Fourier operators with global weight conditions.- 3. Parameter-dependent Volterra calculus on a closed manifold.- 3.1. Anisotropic parameter-dependent operators.- Ellipticity and parametrices.- 3.2. Parameter-dependent Volterra operators.- Kernel cut-off behaviour and asymptotic expansion.- The translation operator in Volterra pseudodifferential operators.- Parabolicity for Volterra operators on manifolds.- 4. Weighted Sobolev spaces.- 4.1. Anisotropic Sobolev spaces on the infinite cylinder.- 4.2. Anisotropic Mellin Sobolev spaces.- Mellin Sobolev spaces with asymptotics.- 4.3. Cone Sobolev spaces.- 5. Calculi built upon parameter-dependent operators.- 5.1. Anisotropic meromorphic Mellin symbols.- 5.2. Meromorphic Volterra Mellin symbols.- Mellin quantization.- 5.3. Elements of the Mellin calculus.- Ellipticity and ...

Lie Groups, Differential Equations, and Geometry
Lie Groups, Differential Equations, and Geometry

Author: Giovanni Falcone

Publisher: Springer

Published: 2017-09-19

Total Pages: 368

ISBN-13: 3319621815

DOWNLOAD EBOOK

This book collects a series of contributions addressing the various contexts in which the theory of Lie groups is applied. A preliminary chapter serves the reader both as a basic reference source and as an ongoing thread that runs through the subsequent chapters. From representation theory and Gerstenhaber algebras to control theory, from differential equations to Finsler geometry and Lepage manifolds, the book introduces young researchers in Mathematics to a wealth of different topics, encouraging a multidisciplinary approach to research. As such, it is suitable for students in doctoral courses, and will also benefit researchers who want to expand their field of interest.

Mathematics and War
Mathematics and War

Author: Bernhelm Booß-Bavnbek

Publisher: Birkhäuser

Published: 2012-12-06

Total Pages: 418

ISBN-13: 3034880936

DOWNLOAD EBOOK

Mathematics has for centuries been stimulated, financed and credited by military purposes. Some mathematical thoughts and mathematical technology have also been vital in war. During World War II mathematical work by the Anti-Hitler coalition was part of an aspiration to serve humanity and not help destroy it. At present, it is not an easy task to view the bellicose potentials of mathematics in a proper perspective. The book presents historical evidence and recent changes in the interaction between mathematics and the military. It discusses the new mathematically enhanced development of military technology which seems to have changed the very character of modern warfare.

Social Choice and the Mathematics of Manipulation
Social Choice and the Mathematics of Manipulation

Author: Alan D. Taylor

Publisher: Cambridge University Press

Published: 2005-05-09

Total Pages: 191

ISBN-13: 0521810523

DOWNLOAD EBOOK

Honesty in voting, it turns out, is not always the best policy. Indeed, in the early 1970s, Allan Gibbard and Mark Satterthwaite, building on the seminal work of Nobel laureate Kenneth Arrow, proved that with three or more alternatives there is no reasonable voting system that is non-manipulable; voters will always have an opportunity to benefit by submitting a disingenuous ballot. The ensuing decades produced a number of theorems of striking mathematical naturality that dealt with the manipulability of voting systems. This 2005 book presents many of these results from the last quarter of the twentieth century, especially the contributions of economists and philosophers, from a mathematical point of view, with many new proofs. The presentation is almost completely self-contained, and requires no prerequisites except a willingness to follow rigorous mathematical arguments. Mathematics students, as well as mathematicians, political scientists, economists and philosophers will learn why it is impossible to devise a completely unmanipulable voting system.