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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Simulation of the fractional derivative operator [square root of] s and the fractional integral operator 1 [divided by the square root of] s

Carlson, Gordon Eugene January 2011 (has links)
Digitized by Kansas State University Libraries
2

Results in semi-inner-product spaces and generalized cosine operator functions

Faulkner, Gary Doyle 12 1900 (has links)
No description available.
3

A class of operators with symbol on the bloch space of a bounded homogeneous domain

Allen, Robert Francis. January 2009 (has links)
Thesis (Ph.D.)--George Mason University, 2009. / Vita: p. 158. Thesis director: Flavia Colonna. Submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Mathematics. Title from PDF t.p. (viewed Oct. 11, 2009). Includes bibliographical references (p. 150-157). Also issued in print.
4

Spectral analysis of operators polynominals

Rowley, Brian. January 1979 (has links)
No description available.
5

Functions of operators and the classes associated with them / Functions of operators and the classes associated with them

Labuschagne, L E, Labuschagne, Louis E 22 November 2016 (has links)
The important classes of normally solvable, ϴ₊ (ϴ₋) and strictly singular (strictly cosingular) operators have long been studied in the setting of bounded or closed operators between Banach spaces. Results by Kato, Lacey, et al (see Goldberg [16; III.1.9, III.2.1 and III.2.3] ) led to the definition of certain norm related functions of operators (Γ, Δ and Γ₀) which provided a powerful new way to study the classes of ϴ₊ and strictly singular operators (see for example Gramsch[19], Lebow and Schechter[28] and Schechter[36]). Results by Brace and R.-Kneece[4] among others led to the definition of analogous functions (Γ' and Δ') which were used to study ϴ₋ and strictly cosingular operators (see for example Weis, [37] and [38]). Again this problem was considered mainly for the case of bounded operators between Banach spaces. This thesis represents a contribution to knowledge in the sense that by considering the functions Γ', Δ' and Γ'₀, as well as the minimum modulus function in the more general setting of unbounded linear operators between normed linear spaces, we obtain the classes of F₋ and Range Open operators which turn out to be closely related to the classes of ϴ₋ and normally solvable operators respectively. We also define unbounded strictly cosingular operators and find that many of the classical results on ϴ₋, normally solvable and bounded strictly cosingular operators go through for F₋, range open and unbounded strictly cosingular operators respectively. This ties up with work done by R. W. Cross and provides a workable framework within which to study ϴ₋ and ϴ₊ type operators in the much more. general setting of unbounded linear operators between normed linear spaces.
6

Group theoretical evaluation of the action of the dilatation operator in the large N limit

Tribelhorn, Laila January 2016 (has links)
A dissertation submitted to the University of the Witwatersrand in ful lment of the requirements for candidacy for the degree of Master of Science. Johannesburg, 2016 / Restricted Schur polynomials can be used to describe large N, non-planar limits of N = 4 super Yang-Mills theory. The R-symmetry generators commute with the dilatation operator. For small deformations of 1 2-BPS operators, the matrix elements of these generators have been computed and a set of recursion relations for the matrix elements of the dilatation operator are obtained from this commutation relation. Together with the knowledge that the smallest eigenvalues of the dilatation operator (corresponding to BPS operators) vanish, these recursion relations can be used to determine the matrix elements of the dilatation operator. Studies up to now have computed the matrix elements of the su(2) generators in the displaced corners approximation. Our first novel result is the computation of the exact su(2) generators. We obtain the matrix elements for the su(3) generators in the displaced corners approximation and exactly, for the first time. This is the first step to computing exact matrix elements of the dilatation operator. / TG2016
7

The Left Regular Representation of a Semigroup

Rowe, Barry James 11 January 2012 (has links)
As with groups, one can study the left regular representation of a semigroup. If one considers such representations, then it is natural to ask similar questions to the group case. We start by formulating several questions in the semigroup case and then work towards understanding the structure of the representations given. We present results describing what the elements of the image under the representation map can look like (the semigroup problem), whether or not two semigroups will give isomorphic representations (the isomorphism problem), and whether or not the representation of a semigroup is reflexive (the reflexivity problem). This research has been funded in part by a scholarship from the Natural Sciences and Engineering Research Council of Canada.
8

The Left Regular Representation of a Semigroup

Rowe, Barry James 11 January 2012 (has links)
As with groups, one can study the left regular representation of a semigroup. If one considers such representations, then it is natural to ask similar questions to the group case. We start by formulating several questions in the semigroup case and then work towards understanding the structure of the representations given. We present results describing what the elements of the image under the representation map can look like (the semigroup problem), whether or not two semigroups will give isomorphic representations (the isomorphism problem), and whether or not the representation of a semigroup is reflexive (the reflexivity problem). This research has been funded in part by a scholarship from the Natural Sciences and Engineering Research Council of Canada.
9

Quantum phase operators: theory and applications

徐以堅, Tsui, Yee-kin. January 1992 (has links)
published_or_final_version / Physics / Master / Master of Philosophy
10

Generalized spectral norms of Hilbert space operators

邱彩娜, Tu, Choi-nai, Charlies. January 1997 (has links)
published_or_final_version / Mathematics / Master / Master of Philosophy

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