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Expansions in eigenfunctions of seldfadjoint operators / Ju M. Berezanskiì
| Expansions in eigenfunctions of seldfadjoint operators / Ju M. Berezanskiì |
| Autore | BEREZANSKII, JU. M. |
| Pubbl/distr/stampa | Providence : American Mathematical Society, copyr. 1968 |
| Descrizione fisica | IX, 809 p. : ill. ; 23 cm |
| Disciplina | 515.724 |
| Collana | Translations of mathematical monographs |
| Soggetto topico | Geometria algebrica |
| Formato | Materiale a stampa  |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Record Nr. | UNISA-990003246450203316 |
BEREZANSKII, JU. M.
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| Providence : American Mathematical Society, copyr. 1968 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. di Salerno | ||
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Extreme eigen values of Toeplitz operators / I. I. Hirschman jr., Daniel E. Hughes
| Extreme eigen values of Toeplitz operators / I. I. Hirschman jr., Daniel E. Hughes |
| Autore | Hirschman, I. I. jr. |
| Pubbl/distr/stampa | Berlin ; New York : Springer-Verlag, 1977 |
| Descrizione fisica | 145 p. ; 24 cm. |
| Disciplina | 515.724 |
| Altri autori (Persone) | Hughes, Daniel Edward |
| Collana | Lecture notes in mathematics, 0075-8434 ; 618 |
| Soggetto topico |
Asymptotic expansions
Eigenvalues Fourier analysis Operator theory Toeplitz operators |
| ISBN | 3540071474 |
| Classificazione |
AMS 47-02
AMS 47A10 AMS 47B35 |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Record Nr. | UNISALENTO-991000884019707536 |
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Hirschman, I. I. jr.
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| Berlin ; New York : Springer-Verlag, 1977 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. del Salento | ||
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Fixed point theory : an introduction / Vasile I. Istratescu
| Fixed point theory : an introduction / Vasile I. Istratescu |
| Autore | Istratescu, Vasile Ion |
| Pubbl/distr/stampa | Dordrecht (NL) : Reidel, 1981 |
| Descrizione fisica | xii, 466 p. ; 23 cm |
| Disciplina |
515.7
515.724 |
| Collana | Mathematics and its applications |
| Soggetto non controllato |
Teoremi di punto fisso
Analisi funzionale |
| ISBN | 90-277-1224-7 |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Record Nr. | UNINA-990001252760403321 |
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Istratescu, Vasile Ion
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| Dordrecht (NL) : Reidel, 1981 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
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Fixed point theory : An introduction / Vasile I Istratescu
| Fixed point theory : An introduction / Vasile I Istratescu |
| Autore | ISTRATESCU, Vasile I |
| Pubbl/distr/stampa | Dordrecht [etc.] : D. Reidel Publishing company, copyr. 1981 |
| Descrizione fisica | XV,466 p. ; 22 cm |
| Disciplina | 515.724 |
| Collana | Mathematics and its applications |
| Soggetto non controllato | Teoria e virgola fissa |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Record Nr. | UNISA-990003250290203316 |
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ISTRATESCU, Vasile I
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| Dordrecht [etc.] : D. Reidel Publishing company, copyr. 1981 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. di Salerno | ||
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Fixed point theory : an introduction / Vasile I. Istratescu
| Fixed point theory : an introduction / Vasile I. Istratescu |
| Autore | Istratescu, Vasile I. |
| Pubbl/distr/stampa | Dordrecht : D. Reidel Publ. Co., c1981 |
| Descrizione fisica | xv, 466 p. ; 23 cm. |
| Disciplina | 515.724 |
| Collana | Mathematics and its applications ; 7 |
| Soggetto topico | Fixed point theorems |
| ISBN | 9027712247 |
| Classificazione | AMS 47H10 |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Record Nr. | UNISALENTO-991000896459707536 |
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Istratescu, Vasile I.
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| Dordrecht : D. Reidel Publ. Co., c1981 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. del Salento | ||
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Fixed point theory and its applications / edited by Srinivasa Swaminathan
| Fixed point theory and its applications / edited by Srinivasa Swaminathan |
| Autore | Seminar on fixed point theory and its applications : <1975 |
| Pubbl/distr/stampa | New York : Academic Press, 1976 |
| Descrizione fisica | XIII, 216 p. ; 24 cm |
| Disciplina |
515.724
515 |
| Soggetto non controllato |
Analisi numerica e grafica
Trigonometria Analisi funzionale Teoria degli operatori e delle trasformazioni integrali |
| ISBN | 0-12-678650-X |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Record Nr. | UNINA-990000850890403321 |
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Seminar on fixed point theory and its applications : <1975
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| New York : Academic Press, 1976 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
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Fixed-point theorems / by D.R. Smart
| Fixed-point theorems / by D.R. Smart |
| Autore | Smart, D.R. |
| Pubbl/distr/stampa | Cambridge : University Press, 1974 |
| Descrizione fisica | VIII, 92 p. ; 22 cm |
| Disciplina |
515.724
517.00//517.36 |
| Collana | Cambridge tracts in mathematics |
| Soggetto non controllato |
Teoremi di punto fisso
Teoria degli operatori Analisi funzionale Algebre astratte |
| ISBN | 0-521-20289-2 |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Record Nr. | UNINA-990000850900403321 |
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Smart, D.R.
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| Cambridge : University Press, 1974 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
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Frames and operator theory in analysis and signal processing : AMS-SIAM Special Session, January 12-15, 2006, San Antonio, Texas / David R. Larson ... [et al.], editors
| Frames and operator theory in analysis and signal processing : AMS-SIAM Special Session, January 12-15, 2006, San Antonio, Texas / David R. Larson ... [et al.], editors |
| Pubbl/distr/stampa | Providence, R. I. : American Mathematical Society, 2008 |
| Descrizione fisica | x, 291 p. : ill. : 26 cm |
| Disciplina | 515.724 |
| Altri autori (Persone) | Larson, David R. |
| Collana | Contemporary mathematics, 0271-4132 ; 451 |
| Soggetto topico |
Operator theory - Congresses
Signal processing - Congresses |
| ISBN |
9780821841440
0821841440 |
| Classificazione |
AMS 42-06
AMS 47-06 AMS 00B25 LC QA329.F73 |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Record Nr. | UNISALENTO-991003887099707536 |
| Providence, R. I. : American Mathematical Society, 2008 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. del Salento | ||
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From Complex Analysis to Operator Theory : a Panorama / / edited by Malcolm Brown [and six others]
| From Complex Analysis to Operator Theory : a Panorama / / edited by Malcolm Brown [and six others] |
| Edizione | [First edition.] |
| Pubbl/distr/stampa | Cham, Switzerland : , : Springer Nature Switzerland AG, , [2023] |
| Descrizione fisica | 1 online resource (731 pages) |
| Disciplina | 515.724 |
| Collana | Operator Theory |
| Soggetto topico | Operator theory |
| ISBN | 3-031-31139-6 |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Nota di contenuto | Part I On Some of Sergey’s Works -- Working with Sergey Naboko on Boundary Triples -- Operator-Valued Nevanlinna–Herglotz Functions, Trace Ideals, and Sergey Naboko’s Contributions -- Mathematical Heritage of Sergey Naboko: Functional Models of Non-Self-Adjoint Operators -- On Crossroads of Spectral Theory with Sergey Naboko -- Sergey Naboko’s Legacy on the Spectral Theory of Jacobi Operators -- On theWork by Serguei Naboko on the Similarity to Unitary and Selfadjoint Operators -- Part II Research Contributions -- Functional Models of Symmetric and Selfadjoint Operators -- Schrödinger Operators with δ-potentials Supported on Unbounded Lipschitz Hypersurfaces -- Improved Lieb–Thirring Type Inequalities for Non-selfadjoint Schrödinger Operators -- Ballistic Transport in Periodic and Random Media -- On the Spectral Theory of Systems of First Order Equations with Periodic Distributional Coefficients -- Asymptotic Analysis of Operator Families and Applications to Resonant Media -- On the Number and Sums of Eigenvalues of Schrödinger-type Operators with Degenerate Kinetic Energy -- Gap Labelling for Discrete One-Dimensional Ergodic Schrödinger Operators -- Degenerate Elliptic Operators and Kato’s Inequality -- Generalized Indefinite Strings with Purely Discrete Spectrum -- Soliton Asymptotics for the KdV Shock Problem of Low Regularity -- Realizations of Meromorphic Functions of Bounded Type -- Spectral Transition Model with the General Contact Interaction -- Weyl’s Law under Minimal Assumptions -- Weyl–Titchmarsh M-Functions for ϕ-Periodic Sturm–Liouville Operators in Terms of Green’s Functions -- On Discrete Spectra of Bergman–Toeplitz Operators with Harmonic Symbols -- One Dimensional Discrete Schrödinger Operators with Resonant Embedded Eigenvalues -- On the Invariance Principle for a Characteristic Function -- A Trace Formula and Classical Solutions to the KdV Equation -- Semiclassical Analysis in the Limit Circle Case. |
| Record Nr. | UNINA-9910746285503321 |
| Cham, Switzerland : , : Springer Nature Switzerland AG, , [2023] | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
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From operator theory to orthogonal polynomials, combinatorics, and number theory : a volume in honor of Lance Littlejohn's 70th birthday / / Fritz Gesztesy, Andrei Martinez-Finkelshtein, editors
| From operator theory to orthogonal polynomials, combinatorics, and number theory : a volume in honor of Lance Littlejohn's 70th birthday / / Fritz Gesztesy, Andrei Martinez-Finkelshtein, editors |
| Pubbl/distr/stampa | Cham, Switzerland : , : Birkhäuser, , [2021] |
| Descrizione fisica | 1 online resource (388 pages) |
| Disciplina | 515.724 |
| Collana | Operator theory, advances and applications |
| Soggetto topico |
Operator theory
Spectral theory (Mathematics) Teoria espectral (Matemàtica) Teoria d'operadors |
| Soggetto genere / forma |
Homenatges
Llibres electrònics |
| ISBN | 3-030-75425-1 |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Nota di contenuto |
Intro -- Preface -- References -- Contents -- Compositions and Chebyshev Polynomials -- 1 Introduction -- 2 Proof of Theorem 1 -- 3 Proof of Theorem 2 -- 4 Proof of Theorem 3 -- 5 Proofs of Theorems 4 and Corollary 1 -- 6 Proof of Theorem 6 and Corollaries -- 7 Further Topics -- References -- Non-negative Extensions of Hamiltonian Systems -- 1 Introduction -- 2 Preliminaries -- 3 The Friedrichs Extension TF of T0 -- 4 Characterisation of Non-negative Extensions TB -- 5 Example: A Fourth Order ODE -- References -- On Simon's Hausdorff Dimension Conjecture -- 1 Introduction -- 2 A Weak Version of Simon's Hausdorff Dimension Conjecture -- 2.1 A Basic Estimate -- 2.2 Prüfer Variables -- 2.3 Unboundedness and Infinite Energy -- 2.4 Proof of Theorem 1.1 and Corollary 1.2 -- References -- Hypergeometric Functions over Finite Fields and Modular Forms: A Survey and New Conjectures -- 1 Introduction -- 2 Preliminaries -- 3 Weight Two Newforms -- 4 Higher Weight Newforms -- 4.1 The Conjectures of Rodriguez Villegas -- 4.2 Conjectures of Evans -- 4.3 Relations with Ramanujan's τ-Function -- 4.4 Other Relations -- 5 Trace Formulas for Hecke Operators -- 6 New Relations -- References -- Ballistic Transport for Periodic Jacobi Operators on Zd -- 1 Introduction -- 2 Decomposition of J -- 3 Ballistic Motion -- References -- Perspectives on General Left-Definite Theory -- 1 Introduction -- 1.1 Notation -- 2 Sturm-Liouville Operators -- 3 Left-Definite Theory -- 4 Comparison with BKV Semi-Bounded Form Theory -- 5 Scale of Spaces from Singular Perturbation Theory -- 6 Perturbation Setup -- Appendix: Extension Theory -- References -- Sampling in the Range of the Analysis Operator of a Continuous Frame Having Unitary Structure -- 1 Statement of the Problem -- 2 Some Preliminaries -- 2.1 Continuous and Discrete Frames.
2.2 Discrete Convolution Systems and Frames of Translates -- 3 The Subspace of L2(G) Where the Sampling Is Carried Out -- 3.1 Sampling Data as a Filtering Process -- 4 The Main Sampling Result and Consequences -- 4.1 Sampling at a Subgroup R with Finite Index in H -- 4.2 Additional Notes and Remarks -- 4.3 The Case of a Semi-Direct Product of Groups -- Euclidean Motion Group and Crystallographic Subgroups -- 4.4 Some Final Comments -- References -- An Extension of the Coherent Pair of Measures of the Second Kind on the Unit Circle -- 1 Introduction -- 2 Coherent Pairs of Measures of the Second Kind -- 2.1 The Case dμ1(z) = 12πi zdz -- 2.2 The Case dμ1(z)=1|z-u|212πi zdz, u≠0 -- 2.3 A General Case -- 3 Hessenberg Matrices -- 4 Sobolev OPUC -- References -- Bessel-Type Operators and a Refinement of Hardy's Inequality -- 1 Introduction -- 2 An Exactly Solvable, Strongly Singular, Periodic Schrödinger Operator -- 3 A Refinement of Hardy's Inequality -- A.1 The Weyl-Titchmarsh-Kodaira m-Function Associated with Ts,F -- B.1 Remarks on Hardy-Type Inequalities -- References -- Spectral Theory of Exceptional Hermite Polynomials -- 1 Introduction -- 2 Some Spectral Theory -- 3 The Formal Theory of Exceptional Hermite Polynomials -- 3.1 Multi-Step Factorization Chains -- 3.2 The Norm Identity -- 4 The L2 Theory -- References -- Occupation Time for Classical and Quantum Walks -- 1 Introduction -- 2 A Look at the Classical Discrete Case -- 3 Occupation Times for Quantum Walks -- 4 A Look at the Hadamard Walk -- 5 The Walk with a Constant Coin -- 6 The Even Verblunsky Coefficients Tend to One -- 7 A Look at the Riesz Walk -- References -- On Foci of Ellipses Inscribed in Cyclic Polygons -- 1 Introduction -- 2 Background and Notation -- 3 The Quadrilateral Case -- 4 The Hexagon Case -- 5 The Pentagon Case -- References -- A Differential Analogue of Favard's Theorem. 1 Introduction -- 2 The Main Theory -- 2.1 Fundamental Results -- 2.2 Relation to Existing Work -- 3 Examples -- 3.1 Jacobi -- 3.2 Hermite -- 3.3 Generalized Hermite -- 3.4 Laguerre -- 3.5 Generalized Laguerre -- 3.6 Continuous Hahn -- 4 Computational Considerations -- 4.1 Computation of Expansion Coefficients -- 4.2 Approximation Theory on the Real Line -- 5 Periodic Bases Arising from Discrete Orthogonal Polynomials -- 6 Challenges and Outlook -- 6.1 Transform Pairs -- 6.2 Location of Zeros -- 6.3 Sobolev Orthogonality -- 6.4 Beyond the Canonical Form -- 6.5 A Freudian Slip-Why We Need More Polynomials -- References -- Intrinsic Properties of Strongly Continuous Fractional Semigroups in Normed Vector Spaces -- 1 Introduction -- 2 Background -- 2.1 Logarithmic Norms on Banach Spaces -- 2.2 Logarithmic Norm Bounds of Classical Semigroups -- 3 Fractional Semigroups -- 3.1 Mittag-Leffler and Wright Functions -- 3.2 Logarithmic Norm Bounds of Fractional Semigroups -- 4 Conclusions and Future Endeavors -- References -- The BFK-gluing Formula for Zeta-determinants and the Conformal Rescaling of a Metric -- 1 Introduction -- 2 The Metric Rescaling and Invariance Theory -- 3 Proof of Theorem 1 -- 4 Conclusions -- References -- New Representations of the Laguerre-Sobolev and Jacobi-Sobolev Orthogonal Polynomials -- 1 Introduction -- 2 Two Representations of the Laguerre-Sobolev Polynomials -- 3 New Representations of the Jacobi-Sobolev Polynomials -- References -- Compactness, or Lack Thereof, for the Harmonic Double Layer -- 1 Compactness of the Harmonic Double Layer Operator on Lebesgue Spaces -- 2 Failure of Compactness for the Harmonic Double Layer Operator -- References -- Weighted Chebyshev Polynomials on Compact Subsets of the Complex Plane -- 1 Introduction -- 2 Existence, Uniqueness, and Characterization of Weighted Chebyshev Polynomials. 3 Bounds for Weighted Chebyshev Polynomials -- References -- The Eichler Integral of E2 and q-brackets of t-hook Functions -- 1 Introduction and Statement of Results -- 2 Nuts and Bolts -- 2.1 A Formula of Han -- 2.2 A Formula of Berndt -- 3 Proofs of Results -- 4 Some Examples -- References. |
| Record Nr. | UNISA-996466561303316 |
| Cham, Switzerland : , : Birkhäuser, , [2021] | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. di Salerno | ||
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