Spectral Spaces

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Spectral Spaces

Author : Max Dickmann,Niels Schwartz,Marcus Tressl
Publisher : Cambridge University Press
Page : 652 pages
File Size : 50,7 Mb
Release : 2019-03-21
Category : Mathematics
ISBN : 9781107146723

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Spectral Spaces by Max Dickmann,Niels Schwartz,Marcus Tressl Pdf

Offers a comprehensive presentation of spectral spaces focussing on their topology and close connections with algebra, ordered structures, and logic.

Spectral Spaces and Hauntings

Author : Christina Lee
Publisher : Routledge
Page : 208 pages
File Size : 52,5 Mb
Release : 2017-02-17
Category : Social Science
ISBN : 9781317515012

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Spectral Spaces and Hauntings by Christina Lee Pdf

This anthology explores the spatial dimension and politics of haunting. It considers how the ‘appearance’ of absence, emptiness and the imperceptible can indicate an overwhelming presence of something that once was, and still is, (t)here. At its core, the book asks: how and why do certain places haunt us? Drawing from a diversity of mediums, forms and disciplinary approaches, the contributors to Spectral Spaces and Hauntings illustrate the complicated ways absent presences can manifest and be registered. The case studies range from the memory sites of a terrorist attack, the lost home, a vanished mining town and abandoned airports, to the post-apocalyptic wastelands in literary fiction, the photographic and filmic surfaces where spectres materialise, and the body as a site for re-corporealising the disappeared and dead. In ruminating on the afteraffects of spectral spaces on human experience, the anthology importantly foregrounds the ethical and political imperative of engaging with ghosts and following their traces.

Spectral Spaces and Hauntings

Author : Christina Lee
Publisher : Taylor & Francis
Page : 208 pages
File Size : 45,6 Mb
Release : 2017-02-17
Category : Social Science
ISBN : 9781317515029

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Spectral Spaces and Hauntings by Christina Lee Pdf

This anthology explores the spatial dimension and politics of haunting. It considers how the ‘appearance’ of absence, emptiness and the imperceptible can indicate an overwhelming presence of something that once was, and still is, (t)here. At its core, the book asks: how and why do certain places haunt us? Drawing from a diversity of mediums, forms and disciplinary approaches, the contributors to Spectral Spaces and Hauntings illustrate the complicated ways absent presences can manifest and be registered. The case studies range from the memory sites of a terrorist attack, the lost home, a vanished mining town and abandoned airports, to the post-apocalyptic wastelands in literary fiction, the photographic and filmic surfaces where spectres materialise, and the body as a site for re-corporealising the disappeared and dead. In ruminating on the afteraffects of spectral spaces on human experience, the anthology importantly foregrounds the ethical and political imperative of engaging with ghosts and following their traces.

Spectral Theory of Operators on Hilbert Spaces

Author : Carlos S. Kubrusly
Publisher : Springer Science & Business Media
Page : 197 pages
File Size : 43,9 Mb
Release : 2012-06-01
Category : Mathematics
ISBN : 9780817683283

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Spectral Theory of Operators on Hilbert Spaces by Carlos S. Kubrusly Pdf

This work is a concise introduction to spectral theory of Hilbert space operators. Its emphasis is on recent aspects of theory and detailed proofs, with the primary goal of offering a modern introductory textbook for a first graduate course in the subject. The coverage of topics is thorough, as the book explores various delicate points and hidden features often left untreated. Spectral Theory of Operators on Hilbert Spaces is addressed to an interdisciplinary audience of graduate students in mathematics, statistics, economics, engineering, and physics. It will also be useful to working mathematicians using spectral theory of Hilbert space operators, as well as for scientists wishing to apply spectral theory to their field. ​

A Theory of Spectral Rhetoric

Author : Seth Pierce
Publisher : Springer Nature
Page : 190 pages
File Size : 53,8 Mb
Release : 2021-08-23
Category : Philosophy
ISBN : 9783030696795

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A Theory of Spectral Rhetoric by Seth Pierce Pdf

This book synthesizes Jacques Derrida’s hauntology and spectrality with affect theory, in order to create a rhetorical framework analyzing the felt absences and hauntings of written and oral texts. The book opens with a history of hauntology, spectrality, and affect theory and how each of those ideas have been applied. The book then moves into discussing the unique elements of the rhetorical framework known as the rhetorrectional situation. Three case studies taken from the Christian tradition, serve to demonstrate how spectral rhetoric works. The first is fictional, C.S. Lewis ’The Great Divorce. The second is non-fiction, Tim Jennings ’The God Shaped Brain. The final one is taken from homiletics, Bishop Michael Curry’s royal wedding 2018 sermon. After the case studies conclusion offers the reader a summary and ideas future applications for spectral rhetoric.

Supersingular p-adic L-functions, Maass-Shimura Operators and Waldspurger Formulas

Author : Daniel Kriz
Publisher : Princeton University Press
Page : 280 pages
File Size : 51,7 Mb
Release : 2021-11-09
Category : Mathematics
ISBN : 9780691225739

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Supersingular p-adic L-functions, Maass-Shimura Operators and Waldspurger Formulas by Daniel Kriz Pdf

A groundbreaking contribution to number theory that unifies classical and modern results This book develops a new theory of p-adic modular forms on modular curves, extending Katz's classical theory to the supersingular locus. The main novelty is to move to infinite level and extend coefficients to period sheaves coming from relative p-adic Hodge theory. This makes it possible to trivialize the Hodge bundle on the infinite-level modular curve by a "canonical differential" that restricts to the Katz canonical differential on the ordinary Igusa tower. Daniel Kriz defines generalized p-adic modular forms as sections of relative period sheaves transforming under the Galois group of the modular curve by weight characters. He introduces the fundamental de Rham period, measuring the position of the Hodge filtration in relative de Rham cohomology. This period can be viewed as a counterpart to Scholze's Hodge-Tate period, and the two periods satisfy a Legendre-type relation. Using these periods, Kriz constructs splittings of the Hodge filtration on the infinite-level modular curve, defining p-adic Maass-Shimura operators that act on generalized p-adic modular forms as weight-raising operators. Through analysis of the p-adic properties of these Maass-Shimura operators, he constructs new p-adic L-functions interpolating central critical Rankin-Selberg L-values, giving analogues of the p-adic L-functions of Katz, Bertolini-Darmon-Prasanna, and Liu-Zhang-Zhang for imaginary quadratic fields in which p is inert or ramified. These p-adic L-functions yield new p-adic Waldspurger formulas at special values.

Spectral Analysis on Graph-like Spaces

Author : Olaf Post
Publisher : Springer Science & Business Media
Page : 444 pages
File Size : 50,7 Mb
Release : 2012-01-06
Category : Mathematics
ISBN : 9783642238390

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Spectral Analysis on Graph-like Spaces by Olaf Post Pdf

Small-radius tubular structures have attracted considerable attention in the last few years, and are frequently used in different areas such as Mathematical Physics, Spectral Geometry and Global Analysis. In this monograph, we analyse Laplace-like operators on thin tubular structures ("graph-like spaces''), and their natural limits on metric graphs. In particular, we explore norm resolvent convergence, convergence of the spectra and resonances. Since the underlying spaces in the thin radius limit change, and become singular in the limit, we develop new tools such as norm convergence of operators acting in different Hilbert spaces, an extension of the concept of boundary triples to partial differential operators, and an abstract definition of resonances via boundary triples. These tools are formulated in an abstract framework, independent of the original problem of graph-like spaces, so that they can be applied in many other situations where the spaces are perturbed.

Introduction to Spectral Theory in Hilbert Space

Author : Gilbert Helmberg
Publisher : Courier Dover Publications
Page : 370 pages
File Size : 45,5 Mb
Release : 2008-06-11
Category : Science
ISBN : 9780486466224

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Introduction to Spectral Theory in Hilbert Space by Gilbert Helmberg Pdf

This introduction to Hilbert space, bounded self-adjoint operators, the spectrum of an operator, and operators' spectral decomposition is accessible to readers familiar with analysis and analytic geometry. 1969 edition.

Introduction to Spectral Theory in Hilbert Space

Author : Gilbert Helmberg
Publisher : Elsevier
Page : 362 pages
File Size : 54,6 Mb
Release : 2014-11-28
Category : Mathematics
ISBN : 9781483164175

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Introduction to Spectral Theory in Hilbert Space by Gilbert Helmberg Pdf

North-Holland Series in Applied Mathematics and Mechanics, Volume 6: Introduction to Spectral Theory in Hilbert Space focuses on the mechanics, principles, and approaches involved in spectral theory in Hilbert space. The publication first elaborates on the concept and specific geometry of Hilbert space and bounded linear operators. Discussions focus on projection and adjoint operators, bilinear forms, bounded linear mappings, isomorphisms, orthogonal subspaces, base, subspaces, finite dimensional Euclidean space, and normed linear spaces. The text then takes a look at the general theory of linear operators and spectral analysis of compact linear operators, including spectral decomposition of a compact selfadjoint operator, weakly convergent sequences, spectrum of a compact linear operator, and eigenvalues of a linear operator. The manuscript ponders on the spectral analysis of bounded linear operators and unbounded selfadjoint operators. Topics include spectral decomposition of an unbounded selfadjoint operator and bounded normal operator, functions of a unitary operator, step functions of a bounded selfadjoint operator, polynomials in a bounded operator, and order relation for bounded selfadjoint operators. The publication is a valuable source of data for mathematicians and researchers interested in spectral theory in Hilbert space.

Spectral Theory of Bounded Linear Operators

Author : Carlos S. Kubrusly
Publisher : Springer Nature
Page : 249 pages
File Size : 41,8 Mb
Release : 2020-01-30
Category : Mathematics
ISBN : 9783030331498

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Spectral Theory of Bounded Linear Operators by Carlos S. Kubrusly Pdf

This textbook introduces spectral theory for bounded linear operators by focusing on (i) the spectral theory and functional calculus for normal operators acting on Hilbert spaces; (ii) the Riesz-Dunford functional calculus for Banach-space operators; and (iii) the Fredholm theory in both Banach and Hilbert spaces. Detailed proofs of all theorems are included and presented with precision and clarity, especially for the spectral theorems, allowing students to thoroughly familiarize themselves with all the important concepts. Covering both basic and more advanced material, the five chapters and two appendices of this volume provide a modern treatment on spectral theory. Topics range from spectral results on the Banach algebra of bounded linear operators acting on Banach spaces to functional calculus for Hilbert and Banach-space operators, including Fredholm and multiplicity theories. Supplementary propositions and further notes are included as well, ensuring a wide range of topics in spectral theory are covered. Spectral Theory of Bounded Linear Operators is ideal for graduate students in mathematics, and will also appeal to a wider audience of statisticians, engineers, and physicists. Though it is mostly self-contained, a familiarity with functional analysis, especially operator theory, will be helpful.

Spectral Theory and Analytic Geometry Over Non-Archimedean Fields

Author : Vladimir G. Berkovich
Publisher : American Mathematical Soc.
Page : 192 pages
File Size : 48,5 Mb
Release : 1990
Category : Mathematics
ISBN : 0821815342

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Spectral Theory and Analytic Geometry Over Non-Archimedean Fields by Vladimir G. Berkovich Pdf

The purpose of this book is to introduce a new notion of analytic space over a non-Archimedean field. Despite the total disconnectedness of the ground field, these analytic spaces have the usual topological properties of a complex analytic space, such as local compactness and local arcwise connectedness. This makes it possible to apply the usual notions of homotopy and singular homology. The book includes a homotopic characterization of the analytic spaces associated with certain classes of algebraic varieties and an interpretation of Bruhat-Tits buildings in terms of these analytic spaces. The author also studies the connection with the earlier notion of a rigid analytic space. Geometrical considerations are used to obtain some applications, and the analytic spaces are used to construct the foundations of a non-Archimedean spectral theory of bounded linear operators. This book requires a background at the level of basic graduate courses in algebra and topology, as well as some familiarity with algebraic geometry. It would be of interest to research mathematicians and graduate students working in algebraic geometry, number theory, and p -adic analysis.

Nonlinear Dirac Equation: Spectral Stability of Solitary Waves

Author : Nabile Boussaïd,Andrew Comech
Publisher : American Mathematical Soc.
Page : 297 pages
File Size : 49,7 Mb
Release : 2019-11-21
Category : Education
ISBN : 9781470443955

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Nonlinear Dirac Equation: Spectral Stability of Solitary Waves by Nabile Boussaïd,Andrew Comech Pdf

This monograph gives a comprehensive treatment of spectral (linear) stability of weakly relativistic solitary waves in the nonlinear Dirac equation. It turns out that the instability is not an intrinsic property of the Dirac equation that is only resolved in the framework of the second quantization with the Dirac sea hypothesis. Whereas general results about the Dirac-Maxwell and similar equations are not yet available, we can consider the Dirac equation with scalar self-interaction, the model first introduced in 1938. In this book we show that in particular cases solitary waves in this model may be spectrally stable (no linear instability). This result is the first step towards proving asymptotic stability of solitary waves. The book presents the necessary overview of the functional analysis, spectral theory, and the existence and linear stability of solitary waves of the nonlinear Schrödinger equation. It also presents the necessary tools such as the limiting absorption principle and the Carleman estimates in the form applicable to the Dirac operator, and proves the general form of the Dirac-Pauli theorem. All of these results are used to prove the spectral stability of weakly relativistic solitary wave solutions of the nonlinear Dirac equation.

Progress in Inverse Spectral Geometry

Author : Stig I. Andersson,Michel L. Lapidus
Publisher : Springer Science & Business Media
Page : 220 pages
File Size : 46,5 Mb
Release : 1997-10
Category : Mathematics
ISBN : 376435755X

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Progress in Inverse Spectral Geometry by Stig I. Andersson,Michel L. Lapidus Pdf

most polynomial growth on every half-space Re (z)::::: c. Moreover, Op(t) depends holomorphically on t for Re t > O. General references for much of the material on the derivation of spectral functions, asymptotic expansions and analytic properties of spectral functions are [A-P-S] and [Sh], especially Chapter 2. To study the spectral functions and their relation to the geometry and topology of X, one could, for example, take the natural associated parabolic problem as a starting point. That is, consider the 'heat equation': (%t + p) u(x, t) = 0 { u(x, O) = Uo(x), tP which is solved by means of the (heat) semi group V(t) = e-; namely, u(-, t) = V(t)uoU- Assuming that V(t) is of trace class (which is guaranteed, for instance, if P has a positive principal symbol), it has a Schwartz kernel K E COO(X x X x Rt, E* (R)E), locally given by 00 K(x, y; t) = L>-IAk( k (R) 'Pk)(X, y), k=O for a complete set of orthonormal eigensections 'Pk E COO(E). Taking the trace, we then obtain: 00 tA Op(t) = trace(V(t)) = 2:: >- k. k=O Now, using, e. g., the Dunford calculus formula (where C is a suitable curve around a(P)) as a starting point and the standard for- malism of pseudodifferential operators, one easily derives asymptotic expansions for the spectral functions, in this case for Op.

Almost Periodic Solutions of Differential Equations in Banach Spaces

Author : Yoshiyuki Hino,Toshiki Naito,Nguyen VanMinh,Jong Son Shin
Publisher : CRC Press
Page : 264 pages
File Size : 47,6 Mb
Release : 2001-10-25
Category : Mathematics
ISBN : 9781482263169

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Almost Periodic Solutions of Differential Equations in Banach Spaces by Yoshiyuki Hino,Toshiki Naito,Nguyen VanMinh,Jong Son Shin Pdf

This monograph presents recent developments in spectral conditions for the existence of periodic and almost periodic solutions of inhomogenous equations in Banach Spaces. Many of the results represent significant advances in this area. In particular, the authors systematically present a new approach based on the so-called evolution semigroups with an original decomposition technique. The book also extends classical techniques, such as fixed points and stability methods, to abstract functional differential equations with applications to partial functional differential equations. Almost Periodic Solutions of Differential Equations in Banach Spaces will appeal to anyone working in mathematical analysis.

Magnetohydrodynamics and Spectral Theory

Author : Alexander E. Lifshits
Publisher : Springer Science & Business Media
Page : 458 pages
File Size : 52,5 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789400925618

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Magnetohydrodynamics and Spectral Theory by Alexander E. Lifshits Pdf

2 The linearized ideal MHO equations. . . . . . . . . . . . 204 3 Spectral problems corresponding to evolutionary problems . . 211 4 Stability of equilibrium configurations and the Energy Principle 215 5 Alternative forms of the plasma potential energy 220 6 Minimization of the potential energy with respect to a parallel displacement . . . . . . . . . . . . . 222 7 Classification of ideal MHO instabilities . 224 8 The linearized non-ideal MHO equations . 226 Chapter 6. Homogeneous and discretely structured plasma oscillations 229 I Introduction . . . . . . . . . . . . . . . 229 2 Alfven waves in an incompressible ideal plasma 230 3 Cold ideal plasma oscillations. . . . 233 4 Compressible hot plasma oscillations 236 5 Finite resistivity effects . . . . . . . 239 6 Propagation of waves generated by a local source 240 7 Stratified plasma oscillations . . . . . . . . . 247 8 Oscillations of a plasma slab . . . . . . . . . 254 9 Instabilities of an ideal stratified gravitating plasma 256 10 Instabilities of a resistive stratified gravitating plasma. 262 Chapter 7. MHO oscillations of a gravitating plasma slab 265 I Introduction . . . . . . . . . . . . . . . 265 2 Gravitating slab equilibrium . . . . . . . . 266 3 Oscillations of a hot compressible plasma slab 267 4 Investigation of the slab stability via the Energy Principle 270 5 On the discrete spectrum of the operator Kk . . . . . . 274 6 On the essential spectrum of the operator Kk . . . . . . 279 7 On the discrete spectrum embedded in the essential spectrum 282 8 The eigenfunction expansion formula . . . . . . . . . . 285 9 Excitation of plasma oscillations by an external power source . 288 10 The linearized equations governing resistive gravitating plasma slab oscillations . . . . . . . . . . . . . . . . . . . . . 290 II Heuristic investigation of resistive instabilities. . . . . . . . . .