Güncel Gönderiler: Matematik-Makale Koleksiyonu
Toplam kayıt 499, listelenen: 321-340
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A note on some subgroups of psl(2,c)
(World Scientific Publ Co Pte Ltd, 2003)In this paper, we introduce some discrete subgroups of PSL(2, C) and determine the number of cusps of 3-manifolds associated to those groups. -
On the two-dimensional differential transform method
(Elsevier Science Bv, 2003)In this paper, two-dimensional differential transform method of solution of the initial value problem for partial differential equations (PDEs) have been studied. New theorems have been added and some linear and nonlinear ... -
Uniform convergence of the Bieberbach polynomials in closed smooth domains of bounded boundary rotation
(Academic Press Inc Elsevier Science, 2003)Let G be a Jordan smooth domain of bounded boundary rotation, let z(0) epsilon G, and let w = phi(0) (z) be the conformal mapping of G onto D (0, r(0)) := {w : \w\ < r(0)) with the normalization phi(0) (z(0)) = 0, phi(0)' ... -
Some subgroups of the extended Hecke groups H(-)over-bar(lambda(q))
(Elsevier Science Bv, 2003)The authors consider the extended Hecke groups (H) over bar(lambda(q)) generated by T(z) = -1/z, S(z) = -1/(z + lambda(q)) and R(z) = 1/(z) over bar with lambda(q) = 2 cos(pi/q) for q greater than or equal to 3 an integer. ... -
On the sequences related to Fibonacci and Lucas numbers
(Korean Mathematical Soc, 2005)In this paper, we obtain some properties of the sequences U-n(q) and V-n(q) introduced in [6]. We find polynomial representations and formulas of them. For q = 5, U-n(5) is the Fibonacci sequence F-n and V-n(5) is the Lucas ... -
A new characterization of Mobius transformations by the use of Apollonius points of (2n-1)-gons
(Springer Heidelberg, 2005)In this paper, we give a new characterization of Mobius transformations. To do this, we extend the notion of Apollonius points of a triangle and of a pentagon, to the notion of Apollonius points of an arbitrary (2n - 1)-gon. -
Proof of a conjecture related to the parabolic class numbers of some Fuchsian groups
(Elsevier Science Inc, 2005)This paper proves a conjecture given in [6], which is concerning with the parabolic class numbers of some Fuchsian groups. -
Rational approximation in Orlicz spaces on Carleson curves
(Belgian Mathematical Soc Triomphe, 2005)We define some subclasses of Orlicz spaces of functions and establish here a direct theorem of the approximation theory by rational functions. -
Submanifolds satisfying some curvature conditions imposed on the Weyl tensor
(Australian Mathematics Publ Assoc Inc, 2003)In this paper we define Weyl semiparallel (C . h = 0) and Weyl 2-semiparallel (C . (&DEL;) over barh 0) submanifolds. We consider n-dimensional normally flat submanifolds satisfying these curvature conditions in (n + ... -
The p-cockcroft property of the semi-direct products of monoids
(World Scientific Publ Co Pte Ltd, 2003)The semi-direct product of arbitrary two monoids and a presentation for this product have received considerable attention, see for instance [12, 14, 15]. In [15], Wang defined a trivializer set of the Squier complex ... -
Integral control by variable sampling based on steady-state data
(Pergamon-Elsevier Science Ltd, 2003)In this paper we consider integral control algorithms with convergent adaptive sampling for multivariable infinite-dimensional systems. Steady-state gain information is used in choosing suitable integrator gains and we ... -
The integer sequence B = Bn(P,Q) with parameters P and Q
(Charles Babbage Res Ctr, 2015)In this work, we first prove that every prime number p equivalent to 1 (mod 4) can be written of the form P-2-4Q with two positive integers P and Q, and then we define the sequence B-n(P, Q) to be B-0 = 2, B-1 = P and B-n ... -
Minimal but inefficient presentations of the semi-direct products of some monoids
(Springer, 2003)In recent papers of Ruskuc, Saito and J. Wang, the semi-direct product of two arbitrary monoids and a standard presentation, say P, for this product have received considerable attention. Wang defined a trivialiser set of ... -
Multivariate approximation theorems in weighted lorentz spaces
(Springer Basel Ag, 2015)We consider trigonometric polynomial approximation problems in the multivariate weighted Lorentz spaces. In particular, we prove direct and converse theorems for trigonometric approximation in the multivariate weighted ... -
The efficiency of standard wreath product
(Oxford Univ Press, 2000)Let xi be the set of all finite groups that have efficient presentations. In this paper we give sufficient conditions for the standard wreath product of two xi-groups to be a E-group. -
Dissolution kinetics of ulexite in aqueous EDTA solutions
(Metallurgical Soc-C I M, 2000)The dissolution kinetics of ulexite in aqueous disodium Ethylene Diamine Tetra Acidic Acid (EDTA) solutions has been investigated with respect to the effects of particle size, solution concentration, pH of solution, ... -
Applications of differential transform method to differential-algebraic equations
(Elsevier Science Inc, 2004)In this paper, numerical solution of linear differential-algebraic equations (DAEs) is considered by differential transform method. Two different problems have been solved by using the technique and solutions have been ... -
Approximation in Smirnov classes with variable exponent
(Taylor & Francıs Ltd, 2015)In this work, the inverse problem of approximation theory in the variable exponent Smirnov classes of analytic functions, defined on the Jordan domains with a Dini-smooth boundaries, is studied. First, for this purpose, ... -
Solutions of the system of differential equations by differentical transform method
(Elsevier Science Bv, 2004)In this study, three-dimensional differential transform method has been introduced and fundamental theorems have been defined for the first time. Moreover, as an application of two and three-dimensional differential ... -
Commutator subgroups of the extended Hecke groups H̄(λq)
(Springer Heidelberg, 2004)Hecke groups H(lambda(q)) are the discrete subgroups of PSL(2, R) generated by S(z) = -(z + lambda(q))(-1) and T(z) = -1/z. The commutator subgroup of H(lambda(q)), denoted by H'(lambda(q)), is studied in [2]. It was shown ...
