MATHEMATICS  AND  THE 21st CENTURY Cairo - Egypt 15-20 January 2000

Algebra

Algebra (1)	Camellia Sunday 16/01/2000 9:00-11:00	Chair : Claudio Procesi Invited Speaker : Adolfo Ballester-Bolinches      Title : Totally and Mutually Permutable Products of Finite Groups Contributors :  M. ASAAD AND *A. A. HELEIL FINITE GROUPS IN WHICH NORMALITY IS A TRANSITIVE RELATION M. ASAAD AND *M. EZZAT MOHAMED ON GENERALIZED HYPERCENTER OF A FINITE GROUP L. M. EZQUERRO AND *X. SOLER-ESCRIVA SOME PROPERTIES AND FACTORIZATIONS INVOLVING PERMUTABLY EMBEDDED SUBGROUPS OF FINITE SOLUBLE GROUPS MANUEL J. ALEJANDRE AND ADOLFO BALLESTER BOLINCHES ON THE DERIVED LENGTH OF SOME PRODUCTS OF SOLUBLE GROUPS
Algebra (2)	Camellia Sunday 16/01/2000 14:45-16:30	Chair : Adolfo Ballester-Bolinches Invited Speaker : Claudio Procesi      Title : Enumerative Geometry Contributors :  *FATMA ISMAIL AND LAILA SOUEIF NORMALIZING EXTENSIONS AND SURJECTIVE ENDOMORPHISMS OF FINITELY GENERATED MODULES L. SOUEIF AND *NASR A. ZEYADA  GENERALIZED V-RINGS LAILA SOUEIF PRIME SKEW GROUP RINGS OF FINITE CHARACTERISTIC
Algebra (3)	Camellia Monday 17/01/2000 14:45-16:30	Chair : Richard Wiegandt Invited Speaker : Mohammed Asaad      Title : On Minimal Subgroups of Finite Groups Contributors :  ADOLFO BALLESTER BOLINCHES AND L. M. EZQUERRO A NOTE ON FINITE GROUPS GENERATED BY ITS SUBNORMAL SUBGROUPS MARIA J. ASIAIN PROJECTORS AND INJECTORS IN SATURATED FITTING FORMATIONS SERGIO CAMP-MORA A JORDAN-HOLDER TYPE THEOREM IN A CLASS OF LOCALLY FINITE GROUPS
Algebra (4)	Camellia Wednesday 19/01/2000 9:00-11:00	Chair : Vlastimil Dlab Invited Speaker : Richard Wiegandt      Title : Radical Theory, Developments and Trends Contributors :  *AHMED A.M. KAMAL AND ELHAM ABD ELRASOL HOMOMORPHIC IMAGE OF STRONGLY AND QUASI STRONGLY RIGHT BOUNDED NEAR-RINGS AHMED A.M. KAMAL AND *ELHAM ABD ELRASOL NIL AND PRIME RADICAL OF PSEUDO DUO NEAR-RINGS MAHER ZAYED ON F-INJECTIVE MODULES J. P. LAFUENTE ; I. LIZASOAIN AND *G. OCHOA CLIFFORD THEORY FOR MACKEY FUNCTORS

Analysis

Analysis (1)	Camellia Monday 17/01/2000 9:00-11:00	Chair : Mourad Ismail Invited Speaker : Yurij Berezanski      Title : Jacobi Matrices and Fields, Spectral Theory and Applications to Integration of Nonlinear Equations Contributors :  *HACEN DIB AND BRAHIM ZAHAF CONFLUENCE PHENOMENA FOR DIFFERENTIAL EQUATIONS: A LIE ALGEBRA APPROACH S. M. AMER AND A. S. NAGDY ON THE SOLUTION OF A CERTAIN CLASS OF NONLINEAR SINGULAR INTEGRO-DIFFERENTIAL EQUATIONS WITH CARLEMAN SHIFT J. BUSTOZ FOURIER SERIES ON A Q-LINEAR LATTICE *SAIDA BENDAAS AND ROBERT LUTZ EQUATION DE BURGERS PAR L'ANALYSE NON-STANDARD
Analysis (2)	Camellia Wednesday 19/1/2000 14:45-16:30	Chair : B. Basit Invited Speaker : Adib A. Fadlalla      Title : Trends in The Development of the Theory of Functions of Several Complex Variables Contributors :  M. K. AOUF; H. M. HOSSEN AND *HODA E. EL-ATTAR COEFFICIENT ESTIMATES FOR CERTAIN CLASS OF ANALYTIC FUNCTIONS OF COMPLEX ORDER B AND TYPE BETA Z. M. G. KISHKA AND A. EL-SAYED ORDER AND TYPE OF ENTIRE FUNCTIONS IN POLYCYLINDERICAL REGIONS Z. M. G. KISHKA AND G. F. HASSAN KRONECKER PRODUCT SETS OF POLYNOMIALS OF SEVERAL COMPLEX VARIABLES (I), (II)
Analysis (3)	Camellia Thursday 20/1/2000 9:00-11:00	Chair : Faruk Abi Khuzam Invited Speaker : A. R. Sourour      Title : Invertibility Preserving Linear Maps Contributors :  M. FARAGALLAH AND E. ELSHOBAKY EIGENVALUE DISTRIBUTION OF FACTORABLE OPERATORS M. FARAGALLAH AND E. ELSHOBAKY ON FOURIER COEFFICIENTS OF FUNCTIONS ON SOME FUNCTION SPACES M. A. AMER APPROXIMATE SOLUTIONS FOR NONLINEAR OPERATOR EQUATIONS IN BANACH SPACES AHMED M. A. EL-SAYED FRACTIONAL CALCULUS BASIC PROPERTIES AND APPLICATIONS
Analysis (4)	Camellia Thursday 20/01/2000 14:45-16:30	Chair : A. R. Sourour Invited Speaker : Faruk Abi Khuzam      Title : Growth, Value Distribution and Zero-free Regions of Entire Functions and Sections Contributors :  MAGDY A. EL-TAWIL THE APPLICATIONS OF WHEP TECHNIQUE ON STOCHASTIC PARTIAL DIFFERENTIAL EQUATIONS TAHER MOURID ESTIMATION OF DRIFT FOR DIFFUSION TYPE PROCESS BY MINIMAL DISTANCE M. SIFI LEVY KHINTCHINE FORMULA AND DUAL CONVOLUTION SEMIGROUPS ASSOCIATED WITH LAGUERRE AND BESSEL FUNCTIONS

Analysis & Differential Equations

Analysis and Differential Equations

Gladiola Sunday 16/01/2000 14:45-16:30

Chair : A. H. Azzam Invited Speaker : B. Basit      Title : Asymptotic Behavior of Solutions of Evolution Equations Contributors :  *AHMED S. HEGAZI AND S.H. SAKER OSCILLATION ON NONLINEAR DELAY DIFFERENTIAL EQUATIONS GAMAL M. MAHMOUD ; TASSOS BOUNTIS AND SAYED A. AHMED STABILITY ANALYSIS FOR SYSTEMS OF NONLINEAR HILL’S EQUATIONS *H.M. EL-OWAIDY ; A. A. RAGAB AND M.M. EL-AFIFI SUFFICIENT CONDITIONS FOR PERMANENCE AND GLOBAL ATTRACTIVITY OF THE DIFFERENCE EQUATION xn+1= xnp f(xn,xn-k,…, xn-k)

Applied Mathematics

Applied Math. (1)	Basinth Sunday 16/01/2000 9:00-11:00	Chair : Lokenath Debnath Invited Speaker : Tassilo Kuepper      Title : Non-Smooth Dynamical Systems Contributors :  AHMED E. RADWAN AND SAAD M. SILEEM HYDROMAGNETIC STABILITY OF STREAMING HOLLOW JET WITH DOUBLE PERTURBED INTERFACES A. EL-GOHARY AND ASHRAF M. HASSEIN STABILIZATION OF AN EQUILIBRIUM POSITION OF A RIGID BODY USING INTERNAL MOVING MASSES WITH UNCERTAINTY IN THE PARAMETERS OF THE EQUATION OF MOTION S. BOUTECHEBAK ; B. MEROUANI AND N. LEBRI THEOREME D’EXISTENCE ET REGULARITE POUR UN PROBLEMED’UNE PLAQUE NON LINEAIRE H. BENSERIDI AND B. MEROUANI SINGULARITES DES SOLUTIONS D’UN PROBLEME AUX LIMITES LIE AU SYSTEME DE LAME AU VOISINAGE D’UNE ARETE D’UN CORPS NON HOMOGENE
Applied Math.(2)	Basinth Sunday 16/01/2000 14:45-16:30	Chair : Tassilo Kuepper Invited Speaker : Lokenath Debnath      Title : Instability of Nonlinear Evolution Equations Contributors :  NAIL SULEIMAN KHABEEV APPLICATIONS OF FOURIER METHOD IN THERMO-HYDRODYNAMICS M. ABDEL-ATY AND A.-S.F. OBADA RECENT ADVANCES IN ONE- AND TWO-PHOTON LASERS A. M. ABOURABIA AND M. M. ABOUSHADY ON THE THEORY OF ELECTRON SWARM AND RELATED ENTROPIC BEHAVIOUR
Applied Math (3)	Basinth Monday 17/01/2000 14:45-16:30	Chair : Ahmed F. Ghaleb Invited Speaker : Ibrahim El-Tayeb      Title : Mathematical Modeling of Sand and Dust Transport Contributors :  *A. M. EL-NAGGAR ; A. M. ABD-ALLA AND S. R. MAHMOUD THE ELECTRO-MECHANICAL EFFECT ON WAVE PROPAGATION IN POROELASTIC BONE WITH CAVITY *ABO-EL-NOUR N. ABDALLA AND IBRAHIM A. A. ABBAS EFFECT OF NON-HOMOGENEITY ON THE STRESSES IN A COMPOSITE CYLINDRICAL SHELL PLACE IN A MAGNETIC FIELD A. G. SAIF ; A. N. MINA ; M. A. EL-SABBAGH AND E. A. FOUAD RESPONSE OF INHOMOGENEOUS HIGH TEMPERATURE SUPERCONDUCTOR IN PARALLEL MAGNETIC FIELD
Applied Math. (4)	Basinth Wednesday 19/01/2000 9:00-11:00	Chair : M. S. Narasimhan Invited Speaker : Mourad Ismail      Title : Electrostatic Models and Discriminents of Orthogonal Polynomials Contributors :  M. A. HELAL A CHEBYSHEV-SPECTRAL METHOD FOR SOLVING KORTWEG DE VRIES EQUATION WITH HYDRODYNAMICAL APPLICATIONS H. I. ABDEL-GAWAD AND N. ELAZAB EXACT SOLUTIONS OF FOUR COUPLED SEMILINEAR DIFFUSION EQUATIONS FOR INITIAL VALUE PROBLEMS EFFAT ABBAS SAIED ON THE ANALYTIC ASSESSMENT OF USED NUCLEAR DISPOSAL : A CATALOGUE OF NEW EXACT SOLUTIONS E. AHMED ; AHMED S. HEGAZI AND M. MANSOUR QUANTUM GROUP APPROACH TO Q-SPECIAL FUNCTIONS

Computer Science & Operations Research

Computer Science and Operations Research

Gladiola Sunday 16/01/2000 9:00-11:00

Chair : Essam K. Al-Hussaini Invited Speaker : M. Nikouline      Title : Theory of Accelerated Experiment Contributors :  LOUISA LAM APPLICATIONS OF MAJORITY VOTE – FROM CONDORCET JURY THEOREM TO PATTERN RECOGNITION H. M. EL-HAWARY ; M. S. SALIM AND M.S. MOHAMED GRAPHICAL USER INTERFACE FOR SOME NUMERICAL METHODS ABDEL-KARIM ABOUL-HASSAN AND SHERIF I. RABIA NETWORKS WITH POLICIES BASED ON BUFFERS AND DUE DATES ABDEL-KARIM ABOUL-HASSAN AND SHERIF I. RABIA UNSTABLE FIFO QUEUEING NETWORKS WITH GENERAL SERVICE TIME

Geometry

Geometry

Gladiola Wednesday 19/1/2000 14:45-16:30

Chair : Mohammed Asaad Invited Speaker : M. S. Narasimhan      Title : Moduli Problems in Geometry Contributors :  MOHAMMED ELSHAFIE ABDELLATIF AND AHMED ELSONBATY GENERATION OF THE ENVELOPING SURFACE SWEPT BY A SOLID OF REVOLUTION NASSAR HASSAN ABDEL-ALL AND FATHI M. HAMDOON ON AN EXTENSION OF THE B-SCROLL SURFACE IN LORENTZ 3-SPACE R3 P. PAMFILOS RECYCLING TRIANGLE VERTICES

Numerical Methods

Numerical Methods (1)	Gladiola Monday 17/01/2000 14:45-16:30	Chair : Salah El-Gindy Invited Speaker : John J. H. Miller      Title : Robust Layer-resolving Methods For Computing Numerical Approximations to the Solution and its Derivatives of Some Classical Problems of Fluid Dynamics Contributors :  E. H. DOHA AND S. I. EL-SOUBHY ON THE COEFFICIENTS OF INTEGRATED EXPANSIONS AND INTEGRALS OF ULTRASPHERICAL POLYNOMIALS MOHAMMEDI R. ABDEL-AZIZ ON THE SOLUTION OF TOTAL LEAST SQUARES PROBLEMS S. SALLAM SIXTH ORDER NON-DISSIPATIVE C1-SPLINE COLLOCATION METHOD FOR OSCILLATORY ORDINARY INITIAL VALUE PROBLEM
Numerical Methods (2)	Basinth Thursday 20/01/2000 14:45-16:30	Chair : Ibrahim El-Tayeb Invited Speaker : Ahmed F. Ghaleb      Title : A Semi analytical Method for the Solution of Some Elliptic Boundary Value Problems Contributors :  S. ADJERID ; J.E. FLAHERTY AND L. KRIVODONOVA A POSTERIORI ERROR ESTIMATION FOR HYPERBOLIC PARTIAL DIFFERENTIAL EQUATIONS Z. KEBICHE AND A. KERAGHEL IMPLEMENTATION NUMERIQUE D’UNE METHODE DE TRAJECTOIRE CENTRALE POUR LES PROBLEMES COMPLEMENTAIRES LINEAIRE N. LEBRI  AND S. DJABI EXISTENCE ET APPROXIMATION NUMERIQUE DE LA SOLUTION D’UN PROBLEME DE CONTACT SANS FROTTEMENT EN VISCOPLASTICITE

Optimization and Control
 

Optimization  and Control

Basinth Thursday 20/1/2000 9:00-11:00

Chair : A. Fadlalla Invited Speaker : Hassan N. Ismail      Title : On Approximations of Functions Contributors :  ABDELOUAHAB KADEM ETUDE TOPOLOGIQUE DE LA FRONTIERE DES SYSTEMES AFFINES CONTROLABLES A. AYADI ; S. REKKAB AND H. MEKIAS UTILISATION DE LA FORMULEATION MIXTE EN OPTIMISATION DE LA FORME D’ARCHE HUSSEIN SAYED TANTAWY ADAPTIVE EIGENSTRUCTURE ASSIGNMENT CONTROL FOR NONLINEAR SYSTEMS HUSSEIN SAYED TANTAWY AND THARWAT E. SEADAWY FUZZY MODEL BAZED FUZZY CONTROLLER DESIGN FOR INDUSTRIAL PROCESSE

Quantum Theory

Quantum Theory (1)	Basinth Monday 17/01/2000 9:00-11:00	Chair : S. R. Komy Invited Speaker : Robin K. Bullough      Title : The Optical Soliton : Twenty Seven Years Ago and Three More Into The Millennium  Contributors :  TAREK M. EL-SHAHAT AND A.-S. OBADA  PROBE ABSORPTION SPECTRUM FOR DRIVEN TWO-LEVEL ATOM IN FINITE BANDWIDTH SQUEEZED VACUUM A.-S. F. OBADA ; A. M. ABDEL-HAFEZ AND N. H. ABDEL-WAHAB MOMENTUM TRAPPING IN TWO-MODE INTERACTION WITH A THREE-LEVEL ATOM IN A MOMENTUM EIGENSTATE G. M. ABD AL-KADER AND A.-S.F. OBADA FOUR COMPONENT SUPERPOSITION OF SQUEEZED COHERENT STATES
Quantum Theory (2)	Basinth Wednesday 19/1/2000 14:45-16:30	Chair : A.-S. F. Obada Invited Speaker : S. R. Komy      Title : On the Relativistic 2-body Problem Contributors :  M. A. EL-NAGGAR ; S.F. RAGAB AND A. A. HELMY CLOSED FORM FOR THE SECOND VIRIAL COEFFICIENT USING THE MODIFIED BUCKINGHAM POTENTIAL FOR DIATOMIC MOLECULES M. RASHDAN ; T. A. ABDEL-KARIM ; S. EL-KHOLY ; RAMADAN M. ALI AND M. Z. ABU ELNAGA DESCRIPTION OF HI INTERACTIONS USING COMPLEX EFFECTIVE M3Y FORCE HOSNY A. ABDUSALAM RENORMALIZATION GROUP METHOD AND JULIA SETS

Relativity
 

Relativity (1)	Gladiola Wednesday 19/1/2000 9:00-11:00	Chair : M. Abdel-Megied Invited Speaker : Klaus Buchner      Title : Singularities in General Relativity and the Origin of Charge Contributors :  M. I. WANAS PARAMETRIZING ABSOLUTE PARALLELISM GEOMETRY F. I. MIKHAIL ; M. I. WANAS AND A. B. MORCOS APPLICATIONS OF THEOREMS ON NULL GEODESICS ON SOLAR LIMB EFFECT F. I. MIKHAIL ; M. I. WANAS AND GAMAL G. L. NASHED EFFECT OF SIGNATURE CHANGE ON SPHERICALLY SYMMETRIC SOLUTIONS OF NGR M. ABDEL-MEGIED SOLITONIC GRAVITATIONAL WAVES IN GOWDY UNIVERSE’S BACKGROUND
Relativity (2)	Gladiola Thursday 20/01/2000 14:45-16:30	Chair : Klaus Buchner Invited Speaker : M. Abdel-Megied      Title : Inner Geometry of Light Cone in Godel Space-time Contributors : M. I. WANAS AND M. A. BAKRY GENERALIZATION OF RAYCHAUDHURI EQUATION M. I. WANAS ; M. MELEK AND M. E. KAHIL GEOMETRIC TRAJECTORIES OF THERMAL NEUTRONS IN THE EARTH’S GRAVITATIONAL FIELD SALAH HAGGAG REVIEW OF RELATIVISTIC CYLINDERS : PROBLEMS AND ADVANCES

Statistics
 

Statistics

Gladiola Monday 17/01/2000 9:00-11:00

Chair : M. Nikouline Invited Speaker : Essam K. Al-Hussaini      Title : Prediction : Advances and New Results Contributors :  KHALAF S. SULTAN MOMENTS OF RECORD VALUES FROM UNIFORM DISTRIBUTION AND ASSOCIATED INFERENCE M.A.M. ALI MOUSA INFERENCE AND PREDICTION FOR THE BURR TYPE X MODEL BASED ON RECORDS N. PAPADATOS EXPECTATION BOUNDS ON LINEAR ESTIMATORS FROM DEPENDENT SAMPLES N. MOKHLIS AND S. IBRAHIM EFFICIENT BOOTSTRAP RESAMPLING FOR DEPENDENT DATA

Topology
 

Topology

Gladiola Thursday 20/01/2000 9:00-11:00

Chair : M. Ezzat Abd El-Monsef Contributors : *A. A. ABO KHADRA AND A.A. NASEF CO-F-CLOSED TOPOLOGIES A. A. ABO KHADRA AND *A.A. NASEF FUNCTIONS BASED ON CLOSENESS MOHAMMED ATALLAH FUZZY RELATIONS AND FUZZY IDEALS OF LATTICES M. E. ABD EL-MONSEF ; E. F. LASHEIN ; B. M. TAHER AND *A. I. EL-MAGHRABI IDEAL EXTENSIONS OF OPEN D-NUCLEI M. E. EL-SHAFEI AND *ATEF I. AGGOUR SOME GOOD TYPES OF COMPACTNESS IN L-FUZZY TOPOLOGICAL SPACES ABD EL-MONEM M. KOZAE TOPOLOGIES GENERATED BY RELATIONS AND SOME APPLICATIONS M .E. ABD EL-MONSEF ; E.I. LASHIN AND *A. A. ATIK ON IRRESOLUTE MULTIFUNCTIONS AND GAMES M. E. ABD EL-MONSEF ; E.F. LASHEIN ; B.M. TAHER AND *A. I. EL-MAGHRABI SOME TYPES OF D-SEPARATION AXIOMS VIA NEARLY OPEN D-NUCLEI