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Browsing Mathematics by Title

Browsing Mathematics by Title

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  • Mohammed, Jemal (Addis Ababa University, 2011-01)
    Ordered trees are trees with a distinguished vertex called the root where the children of each internal vertex are linearly ordered. K-trees generalize ordered trees in the sense that ordered trees are 2-trees in which ...
  • Atlaw, Tesfu (Addis Ababa University, 2015-03)
    A graph is said to be planar if it can be drown in the plane so that no two edges intersect except (possibly) at their ends vertices.It is of practical interest to able to determine whether a graph is planar or not, our ...
  • Ayenew, Zebider (Addis Ababa University, 2016-08-01)
    In this project, my main concern is to study the Lattice Homomorphism of Lattice Ordered Groups.First we will give the defnition of lattice order group and study its properties. We will see the de_nition given by Stone ...
  • Asfeha, Teame (Addis Ababa University, 2018-09-05)
    In this thesis we study various solution techniques of the Legendre differential equations, properties of the Legendre polynomials and the physical applications of Legendre equations and Legendre polynomials to heat ...
  • Fangarasio, Arnest (Addis Ababa University, 2016-06)
    This project addresses the solution of unconstrained optimization problems using algorithms that require only values with out using derivative (derivative free ) ,the algo- rithms generate a sequence with an initial point ...
  • Embiale, Mihretu (Addis Ababa University, 2014-10-06)
    With in the framework of any bilevel decision problem, a leader0s decision is in uenced by the reaction of his/her follower(s). When multiple followers who may have had a share in decision variables, objectives and ...
  • Lakie, Esubalew (Addis Ababa University, 2007-08)
    In many decision processes there is an hierarchy of decision-makers and deci- sions are taken at di®erent levels in this hierarchy. The decentralized planning problem has long been recognized as an important decision-making ...
  • Worku, Getinet (Addis Ababa University, 2012-01)
    Employing a localized parametrix the Dirichlet boundary value problem for elliptic equations in the divergence form with general variable matrix coefficients is reduced to localized boundary domain integral equations (LBDIE) ...
  • Tahir, Abrha (Addis Ababa University, 2015-10-16)
    Network location problems occur when new facilities are to be located on a network. The facility location problems locate a set of facilities (resources) to minimize the cost of satis- fying some set of demands (of ...
  • Lemecha, Legesse (Addis Ababa University, 2015-07)
    This dissertation is motivated by practical problem of traffic flow on roundabouts. The study aimed at modelling traffic flow on roundabouts, proposing an optimization strategy for traffic flow on roundabouts and ...
  • Mohammed, Seid (Addis Ababa University, 2014-02-17)
    This paper presents every K4-free graph G with n vertices can be made bipartite by deleting at most n2 9 edges. Moreover, the only extremal graph which requires deletion of that many edges is a complete 3-partite graph ...
  • Debalike, Manalebish (Addis Ababa University, 2018-12-03)
    In ecology, the food chain pyramid suggests that there must be less consumers than their food source. In our case the balance in the population of plants and herbivores should be maintained in the ecosystem. Otherwise, ...
  • Legesse, Dereje (Addis Ababa University, 2013-02)
    The maximum Modulus Theorem expressing one of the basic properties of the modulus of analytic function. The purpose of this paper is to present some variants of the maximum modulus theorem and present the application of ...
  • Adhena, Haftu (Addis Ababa University, 2011-01)
    In this project we discussed the maximum principle for elliptic equations state several theorems, corollaries, and give a number of examples. Although the maximum principle for Laplace's and some other equations has been ...
  • Sahlemariam, Mister (Addis Ababa University, 2012-01)
    Let (Ωμ) be a measure space, and:Ω→ Ω such that for al. Then μ is said to be invariant with respect to if μ)=μ. If is invariant with respect to and is also a probability measure, then the quadruple (Ω) is called a measurable ...
  • Messay, Addis (Addis Ababa University, 2012-01)
    The complete set of this paper focuses on maximum cardinality matching and minimum cost maximum cardinality matching problem with their algorithms which solve cardinality matching in a graph G=(N,A)where N is set of N ...
  • Getnet, Haileleule (Addis Ababa University, 2017-06)
    This work presents an algorithm for computing the maximum flow and minimum cost flow problem of undirected graphs, based on the well-known algorithm presented by Ford and Fulkerson for directed graphs. The new algorithm ...
  • Kuraga, Tamiru (Addis Ababa University, 2015-07)
    The Minimum Cost Network Flow (MCNF) Problem is to send flow from a set of supply or source nodes, through the arcs of a network, to a set of demand or destination nodes, at minimum total cost, and without violating the ...
  • Sintayehu, Sileshi (Addis Ababa University, 2013-07-10)
    Tuberculosis is an infectious disease, which is affecting a third of the world's popula- tion, that makes Tuberculosis a global health problem. Many countries are trying to eliminate the disease but the emergence of ...
  • Tadele, Geleta (Addis Ababa University, 2014-10-27)
    Most of the Real world decision making problems have multiple objectives, which cannot be optimized simultaneously due to the conicting nature of the objectives. Such problems can be solved by various methods to obtain ...

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