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Browsing College of Natural Sciences by Title

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  • Alemye, Gashaw (Addis Ababa University, 2017-10-05)
    This Project is about the study of rst order necessary and su cient conditions for unconstrained cone d.c. programming problems where the underlined space is partially ordered with respect to a cone.These conditions are ...
  • Woudaj, Hailemichael (Addis Ababa University, 2011-01)
    In this paper, we will observe how to find the spanning trees of a graph and the methods that we use to calculate. The methods that we use for calculating the spanning tree of the graph are deletion and contraction, matrix ...
  • Atikaw Sebsibew (Addis Ababa University, 2016-06)
    . This thesis discusses the relationship between Bernstein-Sato ideals of = xy(a3x + y):::(amx + y); ai 2 C; ai 6= aj ;m _ 3 and the decomposition of the D2-module M_ Chx; y; @x; @yi___ over the Weyl algebra Chx; y; ...
  • Girma, Bizuneh (Addis Ababa University, 2012-11)
    This project contains two parts; theory of distribution and Sobolev spaces. In this project, we discussed theory of distribution and also the differentiations of distribution, multiplication by smooth function of distribution, ...
  • Araya, Ataklti (Addis Ababa University, 2017-06-28)
    In this thesis, we investigate entire solutions of the quasilinear equation (y) __u = h(x; u) where __u := div(_(jruj)ru): Under suitable assumptions on the right-hand side we will show the existence of in_nitely many ...
  • Demis Wubale (Addis Ababa University, 2014-06-06)
    This paper is highly dependent on the work of Ruyun Ma and it stabilizes some conditions for the existence of positive solutions to the boundary value problem u00 + a(t)f(u) = 0; t 2 (0; 1) u(0) = 0; u( ) = u(1); where ...
  • Kifle, Dereje (Addis Ababa University, 2011-01)
    The complete set of this project is about feed – forward networks. The realization of Boolean function for linearly separable problem by a single perceptron is possible. The problem is that how the non-linearly separable ...
  • Tegegn Demeku (Addis Ababa University, 2018-09-05)
    The focus of this thesis is on the property and the use of Fourier analysis in different fields containing differential equations. The Fourier transform of an integrable function f, is    F( )  f (x)eixdx We ...
  • Berhe, Gebredingil (Addis Ababa University, 1988-06)
    The problem ,,1&r~ssed j.n the. thesis li(~E in the field of integrated optics. }'or Hght propagation ill dielect.l'ic ,,,,aveguides interconnections are established bet\>leen the dispersion -"equation, critical thickness ...
  • Gelaw, Workye (Addis Ababa University, 2020-07-04)
    This project provides a practical overview of numerical solutions to the linear one dimensional Advection equation using finite difference method. It presents a number of schemes for solution of Linear Advection equation, ...
  • Workneh, Daniel (Addis Ababa University, 2012-06)
    Finding the Number of n-permutations avoiding a pattern q and also _nding the Stanley-Wilf limit of this pattern are some of the most di_cult questions in the theory of pattern avoidance. Very few a_rmative answers are ...
  • Shitiye Fikremariam (Addis Ababa University, 2011-01)
    In This Project We Study The Existence Of Some Positive, Periodic Solutions Of Systems Of Functional Differential Equations. In The First Topic We Introduce The Delay Differential Equations From The Simple Ordinary ...
  • Girmay Fasil (Addis Ababa University, 2012-02)
    In a certain sense, closed orbits are the only types of orbits that we can ever hope to understand completely throughout their evolution from the distant past (i.e. as t ! −1) to the distant future (i.e., as t ! 1) since ...
  • Abebe Legesse (Addis Ababa University, 2011-01)
    Let be a field and given a polynomials inK(x1,x2,...Xn)2 K(X1X2......NK)], we can define an affine varieties in and ideals in a polynomials ring1 ,2 ,. . .]. This project considers the polynomial functions on a variety. ...
  • Teshome, Dereje (Addis Ababa University, 2016-07)
    As the name suggests,a near-ring is a generalized ring more precisely the commutativity of addition is not required and just one of the distributive laws is postulated.Many parts of the well established theory of rings ...
  • Ayansa Muluneh (Addis Ababa University, 2018-08-12)
    The aim of this paper is to generalize Certain Near-rings are rings. Here we are interested in two problems concerning certain classes of Near-rings satisfying the following polynomial identities:- (* ) For each in x,y ...
  • Sahelu, Wondimagegnehu (Addis Ababa University, 2014-08-12)
    In this paper we present Inner product space ,orthogonality ,series ,Fourier series ,parameter form of Bessel equation and the Sturm-Liouville Theory to nd eigenvalue and eigenfunction ,eigenfunction expansion and at ...
  • Feleke, Esubalew (Addis Ababa University, 2018-08-05)
    Potential Theory in the Complex Plane I’ll discuss some of the main definitions, theorems, and techniques on subharmonic functions and potential theory in the complex plane. This includes the origin of the subject in ...
  • Mekonnen, Tigist (Addis Ababa University, 2013-02)
    In this paper a brief history of the Fibonacci and related sequences called Lucas num- bers will be given. Recursion formula for both sequences will also be given. A closed formula for nth - term of Fibonacci and Lucas ...

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