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Displaying 301 – 320 of 348

The reconstruction of local observable algebras from the euclidean Green's functions of relativistic quantum field theory

W. Driessler, J. Fröhlich (1977)

Annales de l'I.H.P. Physique théorique

The Rényi distances of Gaussian measures

Jiří Michálek (1999)

Kybernetika

The author in the paper evaluates the Rényi distances between two Gaussian measures using properties of nuclear operators and expresses the formula for the asymptotic rate of the Rényi distances of stationary Gaussian measures by the corresponding spectral density functions in a general case.

The short-range expansion in solid state physics

Helge Holden, Raphael Høegh-Krohn, Steinar Johannesen (1984)

Annales de l'I.H.P. Physique théorique

The solution of a minimax problem connected to the irreducibility of polynominals.

Bernt Oksendal (1978)

Mathematica Scandinavica

The solution of embedding problems in the framework of GAPs with applications on nonlinear PDEs.

Starkl, Reinhard (2009)

Advances in Mathematical Physics

The spin of the ground state of an atom.

Charles L. Fefferman, Luis A. Seco (1996)

Revista Matemática Iberoamericana

In this paper we address a question posed by M. and T. Hoffmann-Ostenhof, which concerns the total spin of the ground state of an atom or molecule. Each electron is given a value for spin, ±1/2. The total spin is the sum of the individual spins.

The Tomita operator for the free scalar field

Franca Figliolini, Daniele Guido (1989)

Annales de l'I.H.P. Physique théorique

Theorems of Hicks and LeChatelier-Samuelson type in ideal Banach spaces of infinite sequences.

Carbone, Antonio (2005)

APPS. Applied Sciences

Theorems of the alternative for cones and Lyapunov regularity of matrices

Bryan Cain, Daniel Hershkowitz, Hans Schneider (1997)

Czechoslovak Mathematical Journal

Standard facts about separating linear functionals will be used to determine how two cones $C$ and $D$ and their duals $C^{*}$ and $D^{*}$ may overlap. When $T V \to W$ is linear and $K \subset V$ and $D \subset W$ are cones, these results will be applied to $C = T (K)$ and $D$ , giving a unified treatment of several theorems of the alternate which explain when $C$ contains an interior point of $D$ . The case when $V = W$ is the space $H$ of $n \times n$ Hermitian matrices, $D$ is the $n \times n$ positive semidefinite matrices, and $T (X) = A X + X^{*} A$ yields new and known results about the existence of block diagonal...

Tightness, integral equicontinuity and compactness for evolution problems in Banach spaces

Riccarda Rossi, Giuseppe Savaré (2003)

Annali della Scuola Normale Superiore di Pisa - Classe di Scienze

Compactness in the space $L^{p} (0, T; B)$ , $B$ being a separable Banach space, has been deeply investigated by J.P. Aubin (1963), J.L. Lions (1961, 1969), J. Simon (1987), and, more recently, by J.M. Rakotoson and R. Temam (2001), who have provided various criteria for relative compactness, which turn out to be crucial tools in the existence proof of solutions to several abstract time dependent problems related to evolutionary PDEs. In the present paper, the problem is examined in view of Young measure theory: exploiting...