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Operator Extensions, Interpolation of Functions and Related Topics
  • Language: en
  • Pages: 225

Operator Extensions, Interpolation of Functions and Related Topics

  • Type: Book
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  • Published: 2012-12-06
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  • Publisher: Birkhäuser

Since 1976 the Institute of Mathematics of the Romanian Academy (formerly the Department of Mathematics of INCREST) and the Faculty of Mathematics (formerly the Faculty of Sciences) of the University ofTimi~oara have organized several Con ferences on Operator Theory. These Conferences were held yearly in Timi~oara (or in Timi~oara and Herculane) and beginning with 1985 they were held in Bucharest (1985,1986), in Timi~oara (1988) and in Predeal (1990). At the beginning, these Conferences answered the need of a part of the Romanian Mathematical Community ofexploring other forms of survival, after the dissolution of the Institute of Mathematics in 1975. Soon, these meetings evolved to Internati...

Distribution Solutions of Nonlinear Systems of Conservation Laws
  • Language: en
  • Pages: 178

Distribution Solutions of Nonlinear Systems of Conservation Laws

The local structure of solutions of initial value problems for nonlinear systems of conservation laws is considered. Given large initial data, there exist systems with reasonable structural properties for which standard entropy weak solutions cannot be continued after finite time, but for which weaker solutions, valued as measures at a given time, exist. At any given time, the singularities thus arising admit representation as weak limits of suitable approximate solutions in the space of measures with respect to the space variable. Two distinct classes of singularities have emerged in this context, known as delta-shocks and singular shocks. Notwithstanding the similar form of the singularities, the analysis of delta-shocks is very different from that of singular shocks, as are the systems for which they occur. Roughly speaking, the difference is that for delta-shocks, the density approximations majorize the flux approximations, whereas for singular shocks, the flux approximations blow up faster. As against that admissible singular shocks have viscous structure.

Torus Fibrations, Gerbes, and Duality
  • Language: en
  • Pages: 104

Torus Fibrations, Gerbes, and Duality

Let $X$ be a smooth elliptic fibration over a smooth base $B$. Under mild assumptions, the authors establish a Fourier-Mukai equivalence between the derived categories of two objects, each of which is an $\mathcal{O} DEGREES{\times}$ gerbe over a genus one fibration which is a twisted form

Hardy Spaces and Potential Theory on $C^1$ Domains in Riemannian Manifolds
  • Language: en
  • Pages: 92

Hardy Spaces and Potential Theory on $C^1$ Domains in Riemannian Manifolds

The author studies Hardy spaces on C1 and Lipschitz domains in Riemannian manifolds. Hardy spaces, originally introduced in 1920 in complex analysis setting, are invaluable tool in harmonic analysis. For this reason these spaces have been studied extensively by many authors.

Contributions to Operator Theory and its Applications
  • Language: en
  • Pages: 229

Contributions to Operator Theory and its Applications

  • Type: Book
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  • Published: 2012-12-06
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  • Publisher: Birkhäuser

This volume is dedicated to Tsuyoshi Ando, a foremost expert in operator theory, matrix theory, complex analysis, and their applications, on the occasion of his 60th birthday. The book opens with his biography and list of publications. It contains a selection of papers covering a broad spectrum of topics ranging from abstract operator theory to various concrete problems and applications. The majority of the papers deal with topics in modern operator theory and its applications. This volume also contains papers on interpolation and completion problems, factorization problems and problems connected with complex analysis. The book will appeal to a wide audience of pure and applied mathematicians.

Spinor Genera in Characteristic 2
  • Language: en
  • Pages: 104

Spinor Genera in Characteristic 2

The purpose of this paper is to establish the spinor genus theory of quadratic forms over global function fields in characteristic 2. The first part of the paper computes the integral spinor norms and relative spinor norms. The second part of the paper gives a complete answer to the integral representations of one quadratic form by another with more than four variables over a global function field in characteristic 2.

Numerical Methods for Structured Matrices and Applications
  • Language: en
  • Pages: 439

Numerical Methods for Structured Matrices and Applications

This cross-disciplinary volume brings together theoretical mathematicians, engineers and numerical analysts and publishes surveys and research articles related to topics such as fast algorithms, in which the late Georg Heinig made outstanding achievements.

Recent Advances in Operator Theory
  • Language: en
  • Pages: 592

Recent Advances in Operator Theory

  • Type: Book
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  • Published: 2012-12-06
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  • Publisher: Birkhäuser

A collection of 25 papers dedicated to Israel Gohberg, an outstanding leader in operator theory. Also containing a review of his contributions to mathematics and a complete list of his publications. The book is of interest to a wide audience of pure and applied mathematicians.

Recent Developments in Operator Theory, Mathematical Physics and Complex Analysis
  • Language: en
  • Pages: 424

Recent Developments in Operator Theory, Mathematical Physics and Complex Analysis

This book features a collection of papers by plenary, semi-plenary and invited contributors at IWOTA2021, held at Chapman University in hybrid format in August 2021. The topics span areas of current research in operator theory, mathematical physics, and complex analysis.

Wind
  • Language: en
  • Pages: 288

Wind

  • Type: Book
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  • Published: 2021-04-22
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  • Publisher: PANTAURO

On August 16th, 2016 Santiago Lange amazed the sporting world when he and his teammate Cecilia Carranza won the gold medal in sailing at the Olympic Games in Rio de Janeiro. At that time he was 54 years old, it was his sixth Olympic participation and he fought against unbelievable obstacles. His victory was an incomparable demonstration of his will to fight – not even one year after he had to undergo surgery because of lung cancer. Santiago Lange gave the world of sailing an unforgettable moment of glory. But how did he manage to get back on his feet in such a short time, to train without rest and to take part at the Olympic Games again? And why did he fight when his body, friends and family thought it was time to stop?"Nothing gives me more joy of life and adrenaline than the challenge of sport. When I'm on the water, my thoughts rest. Time stands still. I feel the wave, I feel the wind turning. The tension of the boat tells me that I have to change course or trim. I react, the boat gets faster and everything else doesn't exist anymore. It's always been like that." Santiago Lange