Browsing Department of Mathematics by Title

Now showing items 469-488 of 570

    • Remarks on Bellman's Structural Identifiability 

      Eisenfeld, Jerome (University of Texas at ArlingtonDepartment of Mathematics, 1985-03)
      **Please note that the full text is embargoed** ABSTRACT: This paper remarks on unidentifiable compartmental systems. Emphasis is placed on detecting properties of the system directly from the compartmental diagram without ...

    • Remarks on First and Second Order Periodic Boundary Value Problems 

      Lakshmikantham, V. (University of Texas at ArlingtonDepartment of Mathematics, 1982-05)
      **Please note that the full text is embargoed** ABSTRACT: We consider the first and second order periodic boundary value problems (PBVP for brevity)[see pdf for notation] and [see pdf for notation]and obtain the existence ...

    • Remarks on Nonlinear Contraction and Comparison Principle in Abstract Cones 

      Lakshmikantham, V.; Eisenfeld, Jerome (University of Texas at ArlingtonDepartment of Mathematics, 1975-06)
      **Please note that the full text is embargoed** ABSTRACT: The contraction mapping principle and the Schauder principle can both be viewed as a comparison of maps. For the former one has a condition of the type [see pdf for ...

    • Remarks on Numerical Computations Using the Alternative Method 

      Kannan, R.; Eisenfeld, Jerome; Bernfeld, Stephen R. (University of Texas at ArlingtonDepartment of Mathematics, 1977-12)
      **Please note that the full text is embargoed** ABSTRACT: Recently Cesari and Bowman [1] have demonstrated the applicability of the alternative method to obtain approximate solutions of nonlinear equations. They provided ...

    • Representation Theory Of Totally Reflexive Modules Over non-Gorenstein Rings 

      Rangel, Denise Amanda (Mathematics, 2014-09-17)
      In the late 1960's Auslander and Bridger published Stable Module Theory, in whichthe idea of totally reflexive modules first appeared. These modules have been studiedby many. However, a bulk of the information known about ...

    • Representations of the Extended Poincare Superalgebras in Four Dimensions 

      Griffis, John David; 0000-0002-1463-566X (2016-05-13)
      Eugene Wigner used the Poincare group to induce representations from the fundamental internal space-time symmetries of (special) relativistic quantum particles. Wigner’s students spent considerable amount of time translating ...

    • Reproductive Numbers for Periodic Epidemic Systems 

      Mitchell, Christopher David (2016-08-09)
      When using mathematics to study epidemics, often times the goal is to deter- mine when an infection can invade and persist within a population. This can be done in a variety of ways but the most common is to use threshold ...

    • Resolutions And Tor Algebra Structures For Trivariate Monomial Ideals 

      Painter, Jared Lafayette (Mathematics, 2012-07-25)
      In this manuscript we explore properties of minimal free resolutions and their relationship to the Tor-algebra structure for trivariate monomial ideals. We begin with an in-depth analysis of minimal free resolutions of ...

    • Restricted Curvature in the Minkowski Plane 

      Ghandehari, Mostafa (University of Texas at ArlingtonDepartment of Mathematics, 2008)
      **Please note that the full text is embargoed** ABSTRACT: A geometric proof for the following problem is given: Let E be the unit circle in a Minkowski plane. Let C be any continuously differentiable closed curve with ...

    • The Riccati Equation Arising in the Control Theory 

      Da Prato, G. (University of Texas at ArlingtonDepartment of Mathematics, 1980-06)
      **Please note that the full text is embargoed**

    • The role of adaptations in two-strain competition for sylvatic Trypanosoma cruzi transmission 

      Kribs, Christopher; Mubayi, Anuj (Taylor and Francis OnlineDepartment of Mathematics, University of Texas at Arlington, 2012-08)
      This study presents a continuous-time model for the sylvatic transmission dynamics of two strains of Trypanosoma cruzi enzootic in North America, in order to study the role that adaptations of each strain to distinct modes ...

    • The Role of Nonreal Eigenvalues in the Identification of Cycles in a Compartmental System 

      Eisenfeld, Jerome; Grundy, S. M.; Beltz, W. F. (University of Texas at ArlingtonDepartment of Mathematics, 1983-11)
      **Please note that the full text is embargoed** ABSTRACT: The paper concerns the relationship between the cycles in the graph of a compartmental system and the modes of the impulse response function associated with an ...

    • The role of the ratio of vector and host densities in the evolution of transmission modes in vector-borne diseases. The example of sylvatic Trypanosoma cruzi 

      Kribs, Christopher; Pelosse, Perrine (Department of Mathematics, University of Texas at Arlington, 2012)
      Pathogens may use different routes of transmission to maximize their spread among host populations. Theoretical and empirical work conducted on directly-transmitted diseases suggest that horizontal (i.e., through host ...

    • Sample Solutions of Stochastic Boundary Value Problems 

      Lakshmikantham, V.; Ladde, G. S.; Deimling, K. (University of Texas at ArlingtonDepartment of Mathematics, 1984-11)
      **Please note that the full text is embargoed** ABSTRACT: We prove existence theorems for nonlinear stochastic Sturmiouville problems which improve results from [4]. In the simplest case this is done by means of a known ...

    • Sample Solutions of Stochastic Ordinary Differential Equations 

      Waling, K. (University of Texas at ArlingtonDepartment of Mathematics, 1984-11)
      **Please note that the full text is embargoed** ABSTRACT: Motivated by the stochastic differential equation[see pdf for notation] in [see pdf for notation] we prove a measurable dependence on parameters theorem for ODEs ...

    • Scattering and Inverse Scattering on the Line for a First-Order System with Energy-Dependent Potentials 

      Ercan, Ramazan (University of Texas at Arlington, 2018-05)
      A first-order system of two linear ordinary differential equations is analyzed. The linear system contains a spectral parameter, and it has two coefficients that are functions of the spatial variable 𝑥. Those two functions ...

    • [see pdf for notation]-Reularity for the Solution of Strongly Nonlinear Eigenvalue Problems on Orlicz-Sobolev Spaces 

      Vuillermot, Pierre A. (University of Texas at ArlingtonDepartment of Mathematics, 1984-08)
      **Please note that the full text is embargoed** ABSTRACT: We present a new method to prove the [see pdf for notation]-regularity of the eigenfunctions for Dirichlet problems with strictly convex Young functionnonlinearities ...

    • Self-Circumference of Rotors 

      O'Neill, Edward J.; Ghandehari, Mostafa (University of Texas at ArlingtonDepartment of Mathematics, 1996)
      **Please note that the full text is embargoed** ABSTRACT: The law of cosines from trigonometry is used to obtain elliptic integrals of the second kind to calculate the "self-circumference" of a Reuleaux triangle and the ...

    • Semiclassical Modeling of the H2 Covalent Bond 

      Greenspan, Donald (University of Texas at ArlingtonDepartment of Mathematics, 1985)
      **Please note that the full text is embargoed** ABSTRACT: A semiclassical model is developed for the covalent bond of the H2 molecule. The model utilizes a classical analogue of electron pairing and requires an electron ...

    • Semiclassical Modeling of the States and Spectra of Para Hellium Singlets 

      Greenspan, Donald (University of Texas at ArlingtonDepartment of Mathematics, 1985-12)
      **Please note that the full text is embargoed** ABSTRACT: It is commonly believed that the excited states of helium are solutions of the Schroedinger equation for helium. We show first that this is, in general, false by ...