Recent Submissions

  • Finite volume schemes on Lorentzian manifolds 

    Amorim, P.; LeFloch, P. G.; Okutmuştur, Baver (International Press of BostonCommunications in Mathematical Sciences, 2008)
    We investigate the numerical approximation of (discontinuous) entropy solutions to nonlinear hyperbolic conservation laws posed on a Lorentzian manifold. Our main result establishes the convergence of monotone and first-order ...
  • Fixed point free action on groups of odd order 

    Ercan, Gülin; Güloğlu, İsmail Ş. (Elsevier BVJournal of Algebra, 2008-7)
    Let A be a finite abelian group that acts fixed point freely on a finite (solvable) group G. Assume that |G| is odd and A is of squarefree exponent coprime to 6. We show that the Fitting length of G is bounded by the ...
  • Description of Barely Transitive Groups with Soluble Point Stabilizer 

    Betin, Cansu; Kuzucuoğlu, Mahmut (Informa UK LimitedCommunications in Algebra, 2009-6-4)
    We describe the barely transitive groups with abelian-by-finite, nilpotent-by-finite and soluble-by-finite point stabilizer. In article [6] Hartley asked whether there is a torsionfree barely transitive group. One consequence ...
  • The scaled Hermite–Weber basis in the spectral and pseudospectral pictures 

    Taşeli, Hasan; Alıcı, H. (Springer Science and Business Media LLCJournal of Mathematical Chemistry, 2005-10)
    Computational efficiencies of the discrete (pseudospectral, collocation) and continuous (spectral, Rayleigh-Ritz, Galerkin) variable representations of the scaled Hermite-Weber basis in finding the energy eigenvalues of ...
  • A projection-based stabilized finite element method for steady-state natural convection problem 

    Çıbık, Aytekin; Kaya Merdan, Songül (Elsevier BVJournal of Mathematical Analysis and Applications, 2011-9)
    We formulate a projection-based stabilization finite element technique for solving steady-state natural convection problems. In particular, we consider heat transport through combined solid and fluid media. This stabilization ...
  • Cotton flow 

    Kişisel, Ali Ulaş Özgür; Sarıoğlu, Bahtiyar Özgür; Tekin, Bayram (IOP PublishingClassical and Quantum Gravity, 2008-8-5)
    Using the conformally-invariant Cotton tensor, we define a geometric flow, the Cotton flow, which is exclusive to three dimensions. This flow tends to evolve the initial metrics into conformally flat ones, and is somewhat ...
  • Tame concealed algebras and cluster quivers of minimal infinite type 

    Buan, Aslak Bakke; Reiten, Idun; Seven, Ahmet İrfan (Elsevier BVJournal of Pure and Applied Algebra, 2007-10)
    The well-known list of Happel–Vossieck of tame concealed algebras in terms of quivers with relations, and the list of A. Seven of minimal infinite cluster quivers are compared. There is a 1-1 correspondence between the ...
  • Fixed-point free action of an abelian group of odd non-squarefree exponent 

    Ercan, Gülin; Güloğlu, İsmail Ş.; Sağdiçoğlu, Öznur Mut (Cambridge University Press (CUP)Proceedings of the Edinburgh Mathematical Society, 2011-1-19)
    <jats:title>Abstract</jats:title><jats:p>Let <jats:italic>A</jats:italic> be a finite group acting fixed-point freely on a finite (solvable) group <jats:italic>G</jats:italic>. A longstanding conjecture is that if ...
  • Stabilizing subgrid FEM solution of the natural convection flow under high magnitude magnetic field on sinusoidal corrugated enclosure 

    Aydın, S. H.; Tezer, Münevver (Informa UK LimitedInternational Journal of Computer Mathematics, 2019-7-7)
    This study deals with the stabilized finite element solution of the steady, natural convection flow in an enclosure under a magnetic field applied perpendicular to the sinusoidal corrugated vertical walls of the enclosure, ...
  • Evaluation of selected kaolins as raw materials for the Turkish cement and concrete industry 

    Aras, A.; Albayrak, M.; Arıkan, Mehmet Fırat; Sobolev, K. (Mineralogical SocietyClay Minerals, 2007-6)
    <jats:title>Abstract</jats:title><jats:p>Turkey has a long tradition (starting with prehistoric civilizations) and experience in exploring for raw clay materials and processing them into ceramic products. Many of these ...
  • Multidimensional cyclic codes and Artin–Schreier type hypersurfaces over finite fields 

    Güneri, Cem; Özbudak, Ferruh (Elsevier BVFinite Fields and Their Applications, 2008-1)
    We obtain a trace representation for multidimensional cyclic codes via Delsarte's theorem. This relates the weights of the codewords to the number of affine rational points of Artin-Schreier type hypersurfaces over finite ...
  • Subgrid Stabilized Defect Correction Methods for the Navier–Stokes Equations 

    Kaya Merdan, Songül; Layton, William; Rivière, Béatrice (Society for Industrial & Applied Mathematics (SIAM)SIAM Journal on Numerical Analysis, 2006-1)
    We consider the synthesis of a recent subgrid stabilization method with defect correction methods. The combination is particularly efficient and combines the best algorithmic features of each. We prove convergence of the ...
  • A DRBEM solution for MHD pipe flow in a conducting medium 

    Han Aydın, S.; Tezer, Münevver (Elsevier BVJournal of Computational and Applied Mathematics, 2014-3)
    Numerical solutions are given for magnetohydrodynamic (MHD) pipe flow under the influence of a transverse magnetic field when the outside medium is also electrically conducting. Convection-diffusion-type MHD equations for ...
  • Li-yorke chaos in hybrid systems on a time scale 

    Akhmet, Marat; Fen, Mehmet Onur (WORLD SCIENTIFIC PUBL CO PTE LTD, 5 TOH TUCK LINK, SINGAPORE 596224, SINGAPOREInternatıonal Journal Of Bıfurcatıon And Chaos, 2015-12-30)
    By using the reduction technique to impulsive differential equations [Akhmet & Turan, 2006], we rigorously prove the presence of chaos in dynamic equations on time scales (DETS). The results of the present study are based ...