Results 11 to 20 of about 4,067 (213)
A discrete Hilbert-type inequality in the whole plane
By the use of weight coefficients and technique of real analysis, a discrete Hilbert-type inequality in the whole plane with multi-parameters and a best possible constant factor is given.
Dongmei Xin, Bicheng Yang, Qiang Chen
doaj +1 more source
The Krein-von Neumann extension of a regular even order quasi-differential operator [PDF]
We characterize by boundary conditions the Krein-von Neumann extension of a strictly positive minimal operator corresponding to a regular even order quasi-differential expression of Shin-Zettl type.
Minsung Cho +3 more
doaj +1 more source
Operational semantics: Concepts and their expression [PDF]
One of the earliest approaches to giving formal semantics for programming languages was ``operational semantics''. Enthusiasm for this approach has waxed and waned. The main objective of this paper is to tease apart some concepts involved in writing such operational descriptions and (as separately as possible) to discuss useful notations.
openaire +2 more sources
Boundedly solvable degenerate differential operators for first order
Using the methods of operator theory all boundedly solvable extensions of the minimal operator generated by degenerated type differential-operators expression in the weighted Hilbert space of vector-functions in finite interval in terms of boundary ...
Pembe İpek, Zameddin İsmailov
doaj +1 more source
Transformation operators for impedance Sturm–Liouville operators on the line
In the Hilbert space $H:=L_2(\mathbb{R})$, we consider the impedance Sturm--Liouville operator $T:H\to H$ generated by the differential expression $ -p\frac{d}{dx}{\frac1{p^2}}\frac{d}{dx}p$, where the function $p:\mathbb{R}\to\mathbb{R}_+$ is of ...
M. Kazanivskiy +2 more
doaj +1 more source
Optimizing package express operations in China
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Baris Yildiz 0001 +1 more
openaire +2 more sources
Listeria monocytogenes is a pathogenic bacterium that produces flagella, the locomotory organelles, in a temperature-dependent manner. At 37 °C inside humans, L.
Han Byeol Oh, Su-jin Lee, Sung-il Yoon
doaj +1 more source
Electron Broadening Operator Including Penetrating Collisions for Hydrogen
The expression of the electron broadening operator including the effect of penetrating collisions, i.e., for which the incoming electron enters the extent of bound-electron wave-functions, is rather complicated, even for hydrogen.
Jean-Christophe Pain, Franck Gilleron
doaj +1 more source
Coordinate-Free Approach for the Model Operator Associated With a Third-Order Dissipative Operator
In this paper we investigate the spectral properties of a third-order differential operator generated by a formally-symmetric differential expression and maximal dissipative boundary conditions.
Ekin Uğurlu +2 more
doaj +1 more source
Krein-von Neumann extension of an even order differential operator on a finite interval [PDF]
We describe the Krein-von Neumann extension of minimal operator associated with the expression \(\mathcal{A}:=(-1)^n\frac{d^{2n}}{dx^{2n}}\) on a finite interval \((a,b)\) in terms of boundary conditions. All non-negative extensions of the operator \(A\)
Yaroslav I. Granovskyi +1 more
doaj +1 more source

