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Differential operators

Geometric Differential Operators for Shape Modelling

Geometric Differential Operators for Shape Modelling

... of differential geometry which provides us with a criterion to decide when such degenerate tensors still produce solvable ...of differential operators that locally restrict diffusion to the tangent ...

131

Introduction to second order differential operators in bounded domains with Dirichlet boundary conditions

Introduction to second order differential operators in bounded domains with Dirichlet boundary conditions

... linear operators between X and Y are simply the linear mappings T : X → Y , because the only dense vector subspace of a finite-dimensional normed space is the space ...partial differential operators ...

89

QHWM of the orthogonal and symplectic types Lie subalgebras of the Lie algebra of the matrix quantum pseudo differential operators

QHWM of the orthogonal and symplectic types Lie subalgebras of the Lie algebra of the matrix quantum pseudo differential operators

... Abstract. In this paper we classify the irreducible quasifinite highest weight modules over the orthogonal and symplectic types Lie subalgebras of the Lie algebra of the matrix quantum pseudo-differential ...

36

Canonical trace and pseudo-differential operators on manifolds with boundary

Canonical trace and pseudo-differential operators on manifolds with boundary

... form of integration by parts is an essential ingredient for the proof of the traciality. In spite of the lack of transmission property, we were nevertheless able to transpose Fedosov et al.’s approach to our context by a ...

191

Compendium of publications on: differential operators on manifolds for CAD CAM CAE and computer graphics

Compendium of publications on: differential operators on manifolds for CAD CAM CAE and computer graphics

... If a unrestricted multi-laser machine is used with independent laser heads, i.e, receiving different machining instructions, a global time clock must be used in order to trigger the upda[r] ...

285

Ring of differential operators and a related completely
integrable system

Ring of differential operators and a related completely integrable system

... ABSTRACT. We represent the affi ne ring of an elli ptic curve as a ring of matrix difTerential operators. As an application, we embed the phase variables of the rigid body motion on SO(3) (Euler Top) into ...

28

Differential operators on smooth schemes and embedded
      singularities

Differential operators on smooth schemes and embedded singularities

... J. Giraud provides an alternative approach to the form of induction used by Hironaka in his Desingularization Theorem (over fields of characteristic zero). In doing so, Giraud introduces technics based on differential ...

18

On commuting differential operators and differential subresultants (work in progress)

On commuting differential operators and differential subresultants (work in progress)

... Algebraic approach to handling the inverse spectral problem for the finite-gap operators, with the spectral data being encoded in the spectral curve and an associated line bundle... On c[r] ...

23

On the notion of bandlimitedness and its generalizations

On the notion of bandlimitedness and its generalizations

... In this section we apply the general results obtained in previous sections to specific examples involving differential operators. We specify our characterization of Paley-Wiener functions that are defined ...

11

Schwartz functions on the Heisenberg group,
               spectral multipliers and Gelfand pairs

Schwartz functions on the Heisenberg group, spectral multipliers and Gelfand pairs

... The equivalence of (i) and (ii) is classical, cf. [15], and the equivalence of (iii) with the other two conditions has been proved by F. Ferrari Ruffino [13]. Notice that the immersion (2.1) in Euclidean space depends on ...

12

Dynamics of multivalued linear operators

Dynamics of multivalued linear operators

... of operators can be neglected from the formulation of [18, Theorem ...linear operators can be similarly given, by using the analysis from Example ...unbounded differential operators that we ...

11

Fractional calculus in chemical engineering - from mathematics, to underlying physics, to aplications

Fractional calculus in chemical engineering - from mathematics, to underlying physics, to aplications

... The next famous mathematician in arriving to the fractional problem (finding and expression for non-integer order derivatives) was Leonard Euler, in 1730, Eu- ler proved himself being the first in calculating a ...

58

Curvilinear Object Detection with Fuzzy Mathematical Morphology for Grayscale and Color Medical Imagery

Curvilinear Object Detection with Fuzzy Mathematical Morphology for Grayscale and Color Medical Imagery

... besides introducing the STARE database (see Sect. 3.4 for a complete description). Chanwimaluang and Guoliang [48] presented a method that also uses matched filtering, to later apply a threshold based on local entropy. ...

147

Hardy spaces associated with semigroups of operators

Hardy spaces associated with semigroups of operators

... and non-homogeneous type spaces. In Section 3 we consider the Hardy spaces associated to second order linear differential operators. In the last years I have collaborated with J. Dziubanski (University of ...

22

On the behavior of WOWA operators

On the behavior of WOWA operators

... Any quantifier generating the weighting vector w satisfies the required prop- erties of the function f in the previous definition (under the assumption that the quantifier is the identity when w = η). For this reason, it ...

8

On the orness of SUOWA operators

On the orness of SUOWA operators

... The paper is organized as follows. In Section 2 we recall some basic properties of aggregation functions and the concepts of semi-uninorms and uninorms. Sec- tion 3 is devoted to Choquet integral, including some of the ...

10

A DPG FRAMEWORK FOR STRONGLY MONOTONE OPERATORS

A DPG FRAMEWORK FOR STRONGLY MONOTONE OPERATORS

... The rest of this paper is organized as follows. In the next section we present an abstract framework for operators of the form (1). To the best of our knowledge, such kind a of operator has not been analyzed ...

20

Gevrey multiscale expansions of singular solutions of PDEs with cubic nonlinearity

Gevrey multiscale expansions of singular solutions of PDEs with cubic nonlinearity

... Here, is considered as a small complex perturbation parameter. The study of singularly perturbed ordinary and partial differential equations has been recently developed by several authors. We can cite [3, 7, 10] ...

89

Generalizations of weighted means and OWA operators by using unimodal weighting vectors

Generalizations of weighted means and OWA operators by using unimodal weighting vectors

... SUOWA operators possess interesting properties, their main weakness is that, sometimes, the construction of the capacities is not straightforward given that it is necessary to calculate the monotonic cover [20], ...

10

Haar shifts, commutators, and Hankel operators

Haar shifts, commutators, and Hankel operators

... Observe that H, being convolution commutes with all translations. That is also commutes with all dilation operators follows from the observation that 1/y is a multiple of the multiplicative Haar measure. It can ...

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