00859nam0-22002891i-450 99000172216040332120190703131806.0000172216FED01000172216(Aleph)000172216FED0100017221620030910d1986----km-y0itay50------baitaProdotti friulani tipiciil prosciuttoa cura del Comitato Iniziative AgricolePordenoneComitato Iniziative Agricole198683 p.19 cmIn testa al front.: 40a Fiera campionaria internazionale PordenoneGastronomiaProsciutto641ITUNINARICAUNIMARCBK99000172216040332160 641 COIA 1986338FAGBCFAGBCProdotti friulani tipici360445UNINA00938nam a22002531i 450099100059968970753620021018135724.0021018s1911 it |||||||||||||||||ita b12028216-39ule_instARCHE-011801ExLDip.to Filologia Ling. e Lett.itaA.t.i. Arché s.c.r.l. Pandora Sicilia s.r.l.851.2Medici, Lorenzo :de'<1449-1492>151811Poemi /Lorenzo De' Medici ; con prefazione di G. PapiniLanciano :Carabba,1911157 p. ;19 cmScrittori nostri ;7Papini, Giovanni<1881-1956>.b1202821628-04-1701-04-03991000599689707536LE008 TS H III 412008000392697le008-E0.00-no 00000.i1231813901-04-03Poemi142975UNISALENTOle00801-04-03ma -itait 0104069nam 22006135 450 991048424520332120251002143428.03-030-38312-110.1007/978-3-030-38312-1(CKB)4100000010121993(DE-He213)978-3-030-38312-1(MiAaPQ)EBC6031647(PPN)242846343(EXLCZ)99410000001012199320200127d2020 u| 0engurnn#008mamaatxtrdacontentcrdamediacrrdacarrierQuaternionic de Branges Spaces and Characteristic Operator Function /by Daniel Alpay, Fabrizio Colombo, Irene Sabadini1st ed. 2020.Cham :Springer International Publishing :Imprint: Springer,2020.1 online resource (X, 116 p. 1 illus.)SpringerBriefs in Mathematics,2191-82013-030-38311-3 Includes bibliographical references and index.Preliminaries -- Quaternions and matrices -- Slice hyperholomorphic functions -- Rational functions -- Operator models -- Structure theorems for H(A;B) spaces -- J-contractive functions -- The characteristic operator function -- L() spaces and linear fractional transformations -- Canonical differential systems.This work contributes to the study of quaternionic linear operators. This study is a generalization of the complex case, but the noncommutative setting of quaternions shows several interesting new features, see e.g. the so-called S-spectrum and S-resolvent operators. In this work, we study de Branges spaces, namely the quaternionic counterparts of spaces of analytic functions (in a suitable sense) with some specific reproducing kernels, in the unit ball of quaternions or in the half space of quaternions with positive real parts. The spaces under consideration will be Hilbert or Pontryagin or Krein spaces. These spaces are closely related to operator models that are also discussed. The focus of this book is the notion of characteristic operator function of a bounded linear operator A with finite real part, and we address several questions like the study of J-contractive functions, where J is self-adjoint and unitary, and we also treat the inverse problem, namely to characterize which J-contractive functions are characteristic operator functions of an operator. In particular, we prove the counterpart of Potapov's factorization theorem in this framework. Besides other topics, we consider canonical differential equations in the setting of slice hyperholomorphic functions and we define the lossless inverse scattering problem. We also consider the inverse scattering problem associated with canonical differential equations. These equations provide a convenient unifying framework to discuss a number of questions pertaining, for example, to inverse scattering, non-linear partial differential equations and are studied in the last section of this book.SpringerBriefs in Mathematics,2191-8201Functional analysisOperator theoryFunctions of complex variablesFunctional AnalysisOperator TheoryFunctions of a Complex VariableFunctional analysis.Operator theory.Functions of complex variables.Functional Analysis.Operator Theory.Functions of a Complex Variable.512.5512.5Alpay Danielauthttp://id.loc.gov/vocabulary/relators/aut54298Colombo Fabrizioauthttp://id.loc.gov/vocabulary/relators/autSabadini Ireneauthttp://id.loc.gov/vocabulary/relators/autMiAaPQMiAaPQMiAaPQBOOK9910484245203321Quaternionic de Branges Spaces and Characteristic Operator Function2547779UNINA