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A Kahler category axiomatizes the algebraic geometric theory of Kahler Differentials in an abstract categorical setting. To facilitate this, a Kahler category is equipped with an algebra modality, which endows each object in the image of a specified monad with an associative algebra structure; universal derivations are then required to exist naturally for each of these objects. Moreover, it can be demonstrated that for each T-algebra of said monad there is a natural associative algebra structure. In this paper I will show that under certain conditions on the Kahler category, the universal derivations for the algebras arising from T-algebras exist and arise via a coequalizer. Furthermore, this result is extended to provide an alternative construction for universal derivations for a more general class of algebras, including all algebras in a Kahler category. A prospective categorical formulation of the theory of noncommutative Kahler differentials is then given, and the above said results are shown to apply in this context. Finally, another class of algebras is constructed via a colimit, and the modules of differential forms for these algebras is computed.

C*-algebras from tilings are of particular interest. In 1998 J. Anderson and I. Putnam introduced a C*-algebra obtained from a substitution tiling that is viewed today as a standard invariant for this tilings. In this thesis we introduce another C*-algebra associated to a substitution tiling. We expect this C*-algebra to be in some sense a dual C*-algebra to the one introduced by Anderson and Putnam. but we were not able to make a precise statement. In our effort to characterize this new C*-algebras we prove that they are simple and can be constructed as an inductive limit of recursive subhomogenous algebras. We finish with K-theory computations for a number of examples.

Bibliography: leaves 263-266. / v, 266 leaves ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / This thesis investigates two related aspects of a dualisation program for the intuitionist logic in categories. The dualisation program has as its end the presentation of closed set logic in place of the usual open set logic found in association with toposes. The study is concerned especially with Brouwerian algebras in categories as the duals of the usual Heyting algebras. Defines the notion of a sheaf over the closed sets of a topological space. Investigates the sheaves for their algebric properties in relation to base space topologies. / Thesis (Ph.D.)--University of Adelaide, Dept. of Philosophy, 1996

I use novel splittings of conjugate exponents in Holder’s inequality and other techniques to obtain new inequalities of Hilbert, Hilbert-Pachpatte and Hardy type for series and integrals. The Thesis gives far reaching generalisations of the work of Dragomir-Kim (2003), Pachpatte (1987, 1990, 1992),Handley-Koliha-Pecaric (2000), Hwang-Yang (1990), Hwang(1996), Love-Pecaric (1995) and Mohapatra-Russell (1985) and inequalities for fractional derivatives of integrable functions. (For complete abstract open document)

Bibliography: leaves 263-266. / v, 266 leaves ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / This thesis investigates two related aspects of a dualisation program for the intuitionist logic in categories. The dualisation program has as its end the presentation of closed set logic in place of the usual open set logic found in association with toposes. The study is concerned especially with Brouwerian algebras in categories as the duals of the usual Heyting algebras. Defines the notion of a sheaf over the closed sets of a topological space. Investigates the sheaves for their algebric properties in relation to base space topologies. / Thesis (Ph.D.)--University of Adelaide, Dept. of Philosophy, 1996

Thesis (M. Sc.)--University of Adelaide, Dept of Pure Mathematics,1984. / Includes bibliographical references (leaves 69-72).

Thesis (Ph. D.)--University of Adelaide, Dept. of Pure Mathematics, 1984. / Includes bibliographical references.

Thesis (Ph.D.)--McMaster University (Canada), 1995. / Source: Dissertation Abstracts International, Volume: 57-03, Section: B, page: 1845. Adviser: B. J. Mueller.

Thesis (Ph. D.)--Oregon State University, 2008. / Printout. Includes bibliographical references (leaves 172-175). Also available on the World Wide Web.