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Browsing Department of Mathematics by Issue Date

Browsing Department of Mathematics by Issue Date

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  • Analytical Invcstlgations in Tubulent and IVIlID Tttdmlent Flow 
    Rahman, Md. Lutfor (198)
    The thesis entitled "Analytical Investigations in Turbulent and MHD Turbulent Flow" is being presented for the award of the degree of Doctor of Philosophy in Mathematics. It is the outcome of my research conducted in the ...
  • Quantum Gravity in Curved Space-Time of General Relativity 
    Mondal, Asit Kumar (University of Rajshahi, 1993)
    The main contents of this thesis may be briefly summarized as follows: Chapter 1 contains a brief account of the Plebonski space­time . We specify there the various spacial class of spacetimes covered by the Plebanski ...
  • A Study on Distributive Nearlattices 
    Rahman, Md.Bazlar (University of Rajshahi, 1994)
    This thesis studies the nature of distributive nearlattices. By a nearlattice S we will always mean a (lower) semilattice which· has the property that any two elements possessing a common upper bound,have a supremum, Cornish ...
  • N-Ideals of a Lattice 
    Latif, Md. Abdul (University of Rajshahi, 1994)
    This thesis studies the nature of n-ideals of a lattice. The topic arose out of a study on the kernels, around a particular element n, of a skeletal congruence on a distributive lattice. The idea of n-ideals in a lattice ...
  • Asymptotic Methods for some third order Nonlinear Differential Equations 
    Alam, Md. Shamsul (University of Rajshahi, 1995)
    In this thesis, we investigate the oscillations of third order nonlinear systems by the asymptotic method. The asymptotic method of Krylov-Bogoliubov-Mitropolskii (KBM) is a popular technigue for obtaining analytic solution ...
  • Cosmic String in theory of General Relativity 
    Biswas, Md.Elias Uddin (1997)
    This thesis is organized as follows. Chapter I contains a brief discussion of the production of various topological defects in cosmological phase transitions in the early universe. The three kinds of topological defects ...
  • Sectionally Pseudocomplemented Distributive Nearlattices 
    Islam, A. K. M. Sirajul (University of Rajshahi, 1998)
    This thesis studies the nature of a sectionally pseudocomplemented distributive nearlattice. By a nearlattice S we will always mean a meet semilattice together with the property th9.t any two elements possessing a common ...
  • A Study on Finitely Generated N-Ideals of a Lattice 
    Ali, Md. Ayub (University of Rajshahi, 1998)
    This thesis studies extensively the finitely generated n-ideals of a lattice. The idea of n-ideals in a lattice was first introduced by Cornish and Noor in studying the kernels around a particular element n, of a skeletal ...
  • KBM Asymptotic Method for third order Nonlinear Oscillations 
    Alam, Md. Shamsul (University of Rajshahi, 2000)
    In most treatments or nonlinear oscillations hy perturbation method. only periodic oscillations are treated; transients are not considered. Krylov and Bogoliubov have used a perturbation method to discuss transients in the ...
  • Spinning Particles in Curved Spacetime of General Relativity 
    Ali, M. Hossain (University of Rajshahi, 2001)
    In Introduction we give a brief account of our work of studying spinning particles in curved spacetime of General Relativity. In Chapter I we discuss the relevant equations for the motion of spinning particles in curved ...
  • Theoretical Investigations of Turbulence and Magneto-Hydrodynamic Turbulence in Incompressible Fluid 
    Islam, Md. Anowarul (University of Rajshahi, 2001)
    The thesis entitled "Theoretical investigations of turbulence and Magnetohydrodynamic turbulence in incompressible fluid" is being presented for the award of the degree of Doctor of Philosophy in Mathematics. It is the ...
  • Study of Radicals and Semisimple Classes of Rings 
    Dey, Kalyan Kumar (University of Rajshahi, 2002)
    The concept of the radical of a ring was introduced by Artin for rings with the descending chain condition with a view to obtaining a nice structure theorem for the ring. The idea was to single out the Toblerone part, of ...
  • A Theoretical Study on Some Aspects of Turbulent Flow 
    Sultana, Mst. Shamima (University of Rajshahi, 2003)
    The conception of turbulent flow and the accompanying transition from laminar to turbulent flow is of fundamental importance. In everyday life, we recognized three states of matter: solid, liquid and gas. Although different ...
  • Eulerian Method for Third Order Linear Systems 
    Haque, Md. Abdul (University of Rajshahi, 2003)
    In this thesis, we have studied the solutions of the various types of third order linear systems of ordinary differential equations. In chapter I, we have considered the third order linear homogeneous system with constant ...
  • A Study on Convergence of Newton's Method in Real and Interval Number 
    Rahman, Md. Majedur (University of Rajshahi, 2003)
    In order to find the approximate numerical solution to a system of nonlinear equations as well as an integral and a differential operator equations, Newton's algorithm is widely used. L. V. Kantorovich [1948] and Moore ...
  • A Study of Characterization of Some Regular Gamma Rings 
    Nazneen, Ayesha (University of Rajshahi, 2003)
    The present thesis entitled, "A Study of Characterization of Some Regular Gamma Rings " is the outcome of researches carried out by me under the close supervision of Dr. Akhil Chandra Paul, Professor, Department of ...
  • Some Theoretical Studies on Turbulence and Magneto-Hydrodynamic Turbulence 
    Azad, Md. Abul Kalam (University of Rajshahi, 2004)
    The theory of turbulent motion has received considerable attention in recent developments of high-speed jet aircraft, plasma physics and chemical engineering. The formation of a turbulent boundary layer is one of the most ...
  • Studies on Hydromagnetic Stability of Newtonian and Non-Newtonian Fluid 
    Rahman, M. Monsur (University of Rajshahi, 2004)
    In this thesis hydromagnetic stabilities with respect to both axisymmetric and non­axisymmetric perturbations of an incompressible perfectly conducting viscous fluid in presence of a magnetic field has been investigated. ...
  • Some Topics in Fuzzy Topological Spaces 
    Hossain, Md. Sahadat (University of Rajshahi, 2004)
    The concept of fuzzy set was introduced by the American Mathematician L. A. Zadeh for the first time in 1965. This provides a natural framework for generalizing many algebraic and topological concepts in various directions. ...
  • Use of Fox Derivatives for Solution of Group Theoretic Problem 
    Sultana, Quazi Selina (University of Rajshahi, 2004)
    The thesis is an exposition of use of Fox derivatives for solution of topological and group theoretic problems. Our own contribution is in the latter area. Developed by Fox, free differential calculus emerged as a powerful ...

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