1.

Record Nr.

UNINA9910349350703321

Autore

Colombo Fabrizio

Titolo

Quaternionic Closed Operators, Fractional Powers and Fractional Diffusion Processes / / by Fabrizio Colombo, Jonathan Gantner

Pubbl/distr/stampa

Cham : , : Springer International Publishing : , : Imprint : Birkhäuser, , 2019

ISBN

3-030-16409-8

Edizione

[1st ed. 2019.]

Descrizione fisica

1 online resource (327 pages)

Collana

Operator Theory: Advances and Applications, , 0255-0156 ; ; 274

Disciplina

515.7222

Soggetti

Operator theory

Operator Theory

Lingua di pubblicazione

Inglese

Formato

Materiale a stampa

Livello bibliografico

Monografia

Nota di bibliografia

Includes bibliographical references and index.

Nota di contenuto

Introduction -- Preliminary results -- The direct approach to the S-functional calculus -- The Quaternionic Evolution Operator -- Perturbations of the generator of a group -- The Phillips-functional calculus -- The H-Infinity -Functional Calculus -- Fractional powers of quaternionic linear operators -- The fractional heat equation using quaternionic techniques.-Applications to fractional diffusion- Historical notes and References -- Appendix: Principles of functional Analysis.

Sommario/riassunto

This book presents a new theory for evolution operators and a new method for defining fractional powers of vector operators. This new approach allows to define new classes of fractional diffusion and evolution problems. These innovative methods and techniques, based on the concept of S-spectrum, can inspire researchers from various areas of operator theory and PDEs to explore new research directions in their fields. This monograph is the natural continuation of the book: Spectral Theory on the S-Spectrum for Quaternionic Operators by Fabrizio Colombo, Jonathan Gantner, and David P. Kimsey (Operator Theory: Advances and Applications, Vol. 270).



2.

Record Nr.

UNINA9910300606603321

Autore

Ranger Graham

Titolo

Discourse Markers : An Enunciative Approach / / by Graham Ranger

Pubbl/distr/stampa

Cham : , : Springer International Publishing : , : Imprint : Palgrave Macmillan, , 2018

ISBN

9783319709055

3319709054

Edizione

[1st ed. 2018.]

Descrizione fisica

1 online resource (314 pages) : illustrations, tables

Disciplina

401.41

Soggetti

Linguistics - Methodology

Semiotics

Grammar, Comparative and general - Syntax

Linguistics

Pragmatics

Computational linguistics

Research Methods in Language and Linguistics

Syntax

Theoretical Linguistics / Grammar

Computational Linguistics

Lingua di pubblicazione

Inglese

Formato

Materiale a stampa

Livello bibliografico

Monografia

Nota di bibliografia

Includes bibliographical references at the end of each chapters and index.

Nota di contenuto

1 Introduction -- 2 The Theory of Enunciative and Predicative Operations -- 3 Anyway: configuration by target domain -- 4 Indeed and in fact: the role of subjective positioning -- 5 Yet and still: a transcategorial approach to discourse phenomena -- 6 Discourse marker uses of like: from the occurrence to the type -- 7 I think: further variations in subjective endorsement -- 8 General conclusion.

Sommario/riassunto

In our everyday speech we represent events and situations, but we also provide commentary on these representations, situating ourselves and others relative to what we have to say and situating what we say in larger contexts. The present volume examines this activity of discourse marking from an enunciative perspective, providing the first English-



language study of the highly influential Theory of Enunciative and Predicative Operations. This semantic/pragmatic theory is popular among academics who specialize in linguistics, discourse analysis, translation studies and didactics in France, but has not yet been widely adopted elsewhere. The tools of this theory are applied to a variety of specific discourse markers in contemporary English and semantic hypotheses are tested using the data-based approach of corpus linguistics. This book therefore provides an English-speaking readership with the keys to understand the theory underlying the author's analysis of a selection of discourse ('anyway', 'indeed', 'in fact', 'yet', 'still', 'like' and 'I think'). This book will provide a valuable resource for students and researchers in linguistics with an interest in discourse markers, natural language argumentation, formal semantics, the interfaces between syntax, semantics and pragmatics, linguistic theorisation and French - or "poststructural" - models of discourse analysis.