Doctorat (Mathématiques)

 

Recent Submissions

  • Benchikha, Abdelali; Denche, Mohamed (Université Frères Mentouri - Constantine 1, 2018-03-18)
    The goal of this work is the study of a class of inverse Cauchy problems. A new regularization method based on the well-known method of regularization by truncation of eliminating all high frequencies in the solution of ...
  • Bounekhel, Djalal; Kechkar, Nasserdine (Université Frères Mentouri - Constantine 1, 2021-11-03)
    The thesis consists in three chapters. In the first one, we state all needed definitions and concepts and some preliminary results. In Chapter 2, we study the existence of solutions for nonconvex quasi-variational problems ...
  • Debz, Nassima; Berkane, Abdelhak; Boulfoul, Amel (Université Frères Mentouri - Constantine 1, 2022-02-03)
    In this thesis we study the limit cycles of two classes of ordinary differential syst`ems depending of small parameter. Using a theorem of first and second order averaging theory we transform the study of limit cycles of ...
  • Lateli, Ahcene; Hamaizia, Tayeb; Boutagou, Amor (Université Frères Mentouri - Constantine 1, 2022-01-27)
    This thesis consists of four distinct but complementary chapters. The first chapter contains, on the one hand, some to reminders on Sobolev spaces and polynomial spaces with their associated norms, which constitute the ...
  • Zarour, Abdelwahab; Latrous, Chahla; Ouannas, Adel (Université Frères Mentouri - Constantine 1, 2021-07-19)
    This paper is concerned with the topic of chaos control in fractional maps. It presents two linear control laws to stabilize the dynamics of a new three-dimensional fractional Henon map. The chaos control has been achieved ...
  • Djafri, Houria; Kharfouchi, S. (Université Frères Mentouri - Constantine 1, 2021-04-05)
    This thesis deals with the problem of loss of important information and features in spatial data modeling by building a causal spatial model that can capture the various main characteristics of these data. After a through ...
  • El-Hadj Ali, Thouria; Messaci, Fatiha; Bouzebda, Salim (Université Frères Mentouri - Constantine 1, 2021-07-01)
    In this thesis, we are concerned with the uniform in bandwidth consistency of kernel-type estimators of the regression function derived by modern empirical process theory, under weaker conditions on the kernel than previously ...
  • Matmat, Chahrazade; Messaci, Fatiha; Blanchet, Christian (Université Frères Mentouri - Constantine 1, 2021-06-09)
    We study the Borsuk-Ulam theorem for the triplet (M, τ, Rn), where M is a compact, connected, 3-manifold equipped with a fixed-point-free involution τ. The largest value of n for which the Borsuk-Ulam theorem holds is ...
  • Ayache, Assia; Rahmani, Fouad Lazhar; Kharfouchi, Soumia (Université Frères Mentouri - Constantine 1, 2021-04-08)
    Data analysis (also called exploratory data analysis) is a family of statistical methods whose main characteristics are that they are multidimensional and descriptive. These methods can also be considered as special neural ...
  • Beghriche, Hanane; Kharfouchi, Soumia (2021-04-09)
    Several fields of application such as: astronomy, acoustics, image and signal processing, etc., have used of higher order statistics. They played a crucial role in the identification of a non-minimal phase linear system. ...
  • Djeddi, Kamel; Zéraoulia, El-hadj (Université Frères Mentouri - Constantine 1, 2021)
    In this work, we are interested in the study of discrete-time dynamical systems. We are present the results of theoretical and numerical study of a discrete-time chaotic systems. We begin our study by plotting attractors ...
  • Boulares, Salah; Khellaf, Hassane (Université Frères Mentouri - Constantine 1, 2021-01-14)
    The aim of the present work is to give an exposition of the classical results about integral inequalities appeared in the mathematical researchs in recent years, and to establish some new integral inequalities, integrals ...
  • Djafri, Nabila; Hamaizia, Tayeb (Université Frères Mentouri - Constantine 1, 2021-04-05)
    A new modified 2-D discrete chaotic system with rational fraction is introduced in this thesis ; it has more complicated dynamical structures than HÈnon map and Lozi map. Some dynamical behaviors, Öxed points, period-doubling ...
  • Zekri, Abdelkrim; Berkane, Abdelhak (Université Frères Mentouri - Constantine 1, 2020-11-08)
    In this work, we are interested to the study of boundary values problems with integral boundary conditions. We obtain the existence and uniqueness of solutions with a priori estimate, and prove the Fredholm solvability of ...
  • Chibani, Alima; Kechkar, Nasserdine (Université Frères Mentouri - Constantine 1, 2020-11-30)
    In this thesis, some novel discrete formulations for stabilizing the mixed nite element method Q1-Q0 (bilinear velocity and constant pressure approximations) are introduced and discussed for the generalized Stokes problem. ...
  • Bourezaz, Houda; Merabet, Hayet (Université Frères Mentouri - Constantine 1, 2020-12-03)
    The work presented in this thesis relates to the methodological problems which arise in the context of experimental tests, we have exposed the methods of the sequential analysis setting up to use it in the evaluation of ...
  • Meddour, Lotfi; Zeraoulia, Elhadj (Université Frères Mentouri - Constantine 1, 2020-11-12)
    The aim of the present work consists in a study of the equivalence of two chaotic dynamic systems and to examine and clarify the equivalence of the systems to the Lorenz system. For this purpose we had give several conditions ...
  • Kassah Laouar, Lakhdar; Zennir, Khaled; Mamou, Ameur (Université Frères Mentouri - Constantine 1, 2020-11-08)
    In this thesis, we consider the study of some hyperbolic problems (equations and system of equations) with the presence of a viscoelastic term under some assumptions on initial data and boundary conditions, conditions on ...
  • Belmouloud, Imane; Memou, Ameur (Université Frères Mentouri - Constantine 1, 2020-10-15)
    This work is devoted to the solvability, the existence and the uniqueness of the solution of certain classes of boundary problems for partial differential equations of the parabolic type, combining non-local boundary ...
  • Kaouache, Smail; Abdelouahab, Mohammed-Salah (Université Frères Mentouri - Constantine 1, 2020-02-27)
    The objective of this thesis concerns principally two major subjects. The main contributions of the first subject of this work are: 1. The problem of generalized synchronization between two chaotic fractional non-commensurate ...

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