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Hardback or Cased Book. Condizione: New. Spectral Theory of Families of Self-Adjoint Operators. Book.

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17 x 25 cm. 332 pages. Hardcover. Versand aus Deutschland / We dispatch from Germany via Air Mail. Einband bestoßen, daher Mängelexemplar gestempelt, sonst sehr guter Zustand. Imperfect copy due to slightly bumped cover, apart from this in very good condition. Stamped. Sprache: Englisch.

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Taschenbuch. Condizione: Neu. Druck auf Anfrage Neuware - Printed after ordering - 1. Periodic and quasi-periodic functions.- 1.1. The function spaces $$C^r left( {mathcal{T}_m }ight)$$and $$H^r left( {mathcal{T}_m }ight)$$.- 1.2. Structure of the spaces $$H^r left( {mathcal{T}_m }ight)$$. Sobolev theorems.- 1.3. Main inequalities in $$C^r left( omegaight)$$.- 1.4. Quasi-periodic functions. The spaces $$H^r left( omegaight)$$.- 1.5. The spaces $$H^r left( omegaight)$$ and their structure.- 1.6. First integral of a quasi-periodic function.- 1.7. Spherical coordinates of a quasi-periodic vector function.- 1.8. The problem on a periodic basis in En.- 1.9. Logarithm of a matrix in $$C^l left( {mathcal{T}_m }ight)$$. Sibuja's theorem.- 1.10. Gårding's inequality.- 2. Invariant sets and their stability.- 2.1. Preliminary notions and results.- 2.2. One-sided invariant sets and their properties.- 2.3. Locally invariant sets. Reduction principle.- 2.4. Behaviour of an invariant set under small perturbations of the system.- 2.5. Quasi-periodic motions and their closure.- 2.6. Invariance equations of a smooth manifold and the trajectory flow on it.- 2.7. Local coordinates in a neighbourhood of a toroidal manifold. Stability of an invariant torus.- 2.8. Recurrent motions and multi-frequency oscillations.- 3. Some problems of the linear theory.- 3.1. Introductory remarks and definitions.- 3.2. Adjoint system of equations. Necessary conditions for the existence of an invariant torus.- 3.3. Necessary conditions for the existence of an invariant torus of a linear system with arbitrary non-homogeneity in $$Cleft( {mathcal{T}_m }ight)$$.- 3.4. The Green's function. Sufficient conditions for the existence of an invariant torus.- 3.5. Conditions for the existence of an exponentially stable invariant torus.-3.6. Uniqueness conditions for the Green's function and the properties of this function.- 3.7. Separatrix manifolds. Decomposition of a linear system.- 3.8. Sufficient conditions for exponential dichotomy of an invariant torus.- 3.9. Necessary conditions for an invariant torus to be exponentially dichotomous.- 3.10. Conditions for the $$C'left( {mathcal{T}_m }ight)$$-block decomposability of an exponentially dichotomous system.- 3.11. On triangulation and the relation between the $$C'left( {mathcal{T}_m }ight)$$)-block decomposability of a linear system and the problem of the extendability of an r-frame to a periodic basis in En.- 3.12. On smoothness of an exponentially stable invariant torus.- 3.13. Smoothness properties of Green's functions, the invariant torus and the decomposing transformation of an exponentially dichotomous system.- 3.14. Galerkin's method for the construction of an invariant torus.- 3.15. Proof of the main inequalities for the substantiation of Galerkin's method.- 4. Perturbation theory of an invariant torus of a non linear system.- 4.1. Introductory remarks. The linearization process.- 4.2. Main theorem.- 4.3. Exponential stability of an invariant torus and conditions for its preservation under small perturbations of the system.- 4.4. Theorem on exponential attraction of motions in a neighbourhood of an invariant torus of a system to its motions on the torus.- 4.5. Exponential dichotomy of invariant torus and conditions for its preservation under small perturbations of the system.- 4.6. An estimate of the smallness of a perturbation and the maximal smoothness of an invariant torus of a non-linear system.- 4.7. Galerkin's method for the construction of an invariant torus of a non-linear system of equations and its linearmodification.- 4.8. Proof of Moser's lemma.- 4.9. Invariant tori of systems of differential equations with rapidly and slowly changing variables.- Author index.- Index of notation.…

Buch. Condizione: Neu. Druck auf Anfrage Neuware - Printed after ordering - 1. Periodic and quasi-periodic functions.- 1.1. The function spaces $$C^r left( {mathcal{T}_m }ight)$$and $$H^r left( {mathcal{T}_m }ight)$$.- 1.2. Structure of the spaces $$H^r left( {mathcal{T}_m }ight)$$. Sobolev theorems.- 1.3. Main inequalities in $$C^r left( omegaight)$$.- 1.4. Quasi-periodic functions. The spaces $$H^r left( omegaight)$$.- 1.5. The spaces $$H^r left( omegaight)$$ and their structure.- 1.6. First integral of a quasi-periodic function.- 1.7. Spherical coordinates of a quasi-periodic vector function.- 1.8. The problem on a periodic basis in En.- 1.9. Logarithm of a matrix in $$C^l left( {mathcal{T}_m }ight)$$. Sibuja's theorem.- 1.10. Gårding's inequality.- 2. Invariant sets and their stability.- 2.1. Preliminary notions and results.- 2.2. One-sided invariant sets and their properties.- 2.3. Locally invariant sets. Reduction principle.- 2.4. Behaviour of an invariant set under small perturbations of the system.- 2.5. Quasi-periodic motions and their closure.- 2.6. Invariance equations of a smooth manifold and the trajectory flow on it.- 2.7. Local coordinates in a neighbourhood of a toroidal manifold. Stability of an invariant torus.- 2.8. Recurrent motions and multi-frequency oscillations.- 3. Some problems of the linear theory.- 3.1. Introductory remarks and definitions.- 3.2. Adjoint system of equations. Necessary conditions for the existence of an invariant torus.- 3.3. Necessary conditions for the existence of an invariant torus of a linear system with arbitrary non-homogeneity in $$Cleft( {mathcal{T}_m }ight)$$.- 3.4. The Green's function. Sufficient conditions for the existence of an invariant torus.- 3.5. Conditions for the existence of an exponentially stable invariant torus.-3.6. Uniqueness conditions for the Green's function and the properties of this function.- 3.7. Separatrix manifolds. Decomposition of a linear system.- 3.8. Sufficient conditions for exponential dichotomy of an invariant torus.- 3.9. Necessary conditions for an invariant torus to be exponentially dichotomous.- 3.10. Conditions for the $$C'left( {mathcal{T}_m }ight)$$-block decomposability of an exponentially dichotomous system.- 3.11. On triangulation and the relation between the $$C'left( {mathcal{T}_m }ight)$$)-block decomposability of a linear system and the problem of the extendability of an r-frame to a periodic basis in En.- 3.12. On smoothness of an exponentially stable invariant torus.- 3.13. Smoothness properties of Green's functions, the invariant torus and the decomposing transformation of an exponentially dichotomous system.- 3.14. Galerkin's method for the construction of an invariant torus.- 3.15. Proof of the main inequalities for the substantiation of Galerkin's method.- 4. Perturbation theory of an invariant torus of a non linear system.- 4.1. Introductory remarks. The linearization process.- 4.2. Main theorem.- 4.3. Exponential stability of an invariant torus and conditions for its preservation under small perturbations of the system.- 4.4. Theorem on exponential attraction of motions in a neighbourhood of an invariant torus of a system to its motions on the torus.- 4.5. Exponential dichotomy of invariant torus and conditions for its preservation under small perturbations of the system.- 4.6. An estimate of the smallness of a perturbation and the maximal smoothness of an invariant torus of a non-linear system.- 4.7. Galerkin's method for the construction of an invariant torus of a non-linear system of equations and its linearmodification.- 4.8. Proof of Moser's lemma.- 4.9. Invariant tori of systems of differential equations with rapidly and slowly changing variables.- Author index.- Index of notation.…

Buch. Condizione: Neu. Druck auf Anfrage Neuware - Printed after ordering - 'Et moi, . , si j'avait su comment en revenir, One service mathematics has rendered the human race. It has put common sense back je n'y serais point aile.' where it belongs, on the topmost shelf next Jules Verne to the dusty canister labelled 'discarded n- sense'. The series is divergent; therefore we may be Eric T. Bell able to do something with it. O. Hcaviside Mathematics is a tool for thought. A highly necessary tool in a world where both feedback and non linearities abound. Similarly, all kinds of parts of mathematics seNe as tools for other parts and for other sciences. Applying a simple rewriting rule to the quote on the right above one finds such statements as: 'One seIVice topology has rendered mathematical physics . .'; 'One service logic has rendered com puter science . .'; 'One service category theory has rendered mathematics . .'. All arguably true. And all statements obtainable this way form part of the raison d'j~tre of this series.…

Karton Karton. Condizione: Sehr gut. 317 Seiten Zust: Gutes Exemplar. Schneller Versand und persönlicher Service - jedes Buch händisch geprüft und beschrieben - aus unserem Familienbetrieb seit über 25 Jahren. Eine Rechnung mit ausgewiesener Mehrwertsteuer liegt jeder unserer Lieferungen bei. Wir versenden mit der deutschen Post. Sprache: Englisch Gewicht in Gramm: 722.…

Condizione: New. In English.

Condizione: New. In English.

Condizione: New. In English.

Hardcover. Condizione: Like New. Like New. book.