Güncel Gönderiler: Fen Fakültesi
Toplam kayıt 2379, listelenen: 61-80
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Strong 2-calibrations on R2n
(2011)Most of the classical calibrations possess a property which does not seem to be recognized. Making this property explicit, we define what we call the strong calibrations and prove that a strong 2-calibration field on R2n ... -
Continuity of selectorial maps
(2011)In this paper the selectorial map notion is introduced and the continuity property of selectorial map is studied. The necessary and sufficient conditions for continuity of selectorial maps are obtained -
The graph of fractal dimensions of Julia sets
(2011)We obtain Julia sets of fe(Z) = z2 + c using modified inverse iteration method for all c in some grid of the square [-2, 2]×[-2, 2] and compute fractal dimensions of them. Then we give the whole picture by drawing the graph ... -
Existence and monotone iteration of concave positive symmetric solutions for a three-point second-order boundary value problems with integral boundary conditions
(Dynamic Publishers, 2015)In this article, we make use of the monotone iterative technique to verify the existence of concave symmetric positive solutions of a second-order three-point boundary value problem with integral boundary conditions. The ... -
Seiberg-Witten equations on pseudo-Riemannian spinc manifolds with neutral signature
(Ovidius University, 2012)Pseudo-Riemannian spinc manifolds were introduced by Ikemakhen in [7]. In the present work we consider pseudoRiemannian 4-manifolds with neutral signature whose structure groups are SO+(2; 2). We prove that such manifolds ... -
Amply weak semisimple-supplemented modules
(2013)Let R be a ring and M be a right R-module. In this paper we will study various properties of amply weak semisimple-supplemented module. It is shown that: (1) every projective weakly semisimple-supplemented module is amply ... -
The snowflake curve as an attractor of an iterated function system
(2013)Although the snowflake curve, the boundary of the Koch snowflake, is one of the well-known fractals, there is no iterated function system (IFS) for it in the literature. In this study, we give an IFS for this familiar closed curve -
Comparison of the positional absorption sets in two game approach problems
(IFAC Secretariat, 2012)For a given compact target set M C Rn the problem of approach at a given time instant 6 and the problem of approach to a given time instant 6 are discussed. The coincidence criteria of positional absorbtion sets, i.e. the ... -
A self-similar group in the sense of iterated function system
(2012)In this paper, first we give an iterated function system whose attractor is G m, a subgroup of the automorphism group of an (m + 1) -ary rooted tree. We also show that G m is a self-similar group in the sense of IFS. Then ... -
Relationship between ICT variables and mathematics achievement based on PISA 2006 database: International evidence
(2014)The purpose of this study is to determine the predicting power of mathematics achievement from ICT variables including the Internet/entertainment use (IEU), program/software use (PRGUSE), confidence in internet tasks ... -
Assessing conceptual understanding in mathematics: Using derivative function to solve connected problems
(2013)Open and distance education plays an important role in the actualization of cultural goals as well as in societal developments. This is an independent teaching and learning method for mathematics which forms the dynamic ... -
The role of definition in students' understanding with particular reference to the concavity of a function
(2006)In this study, the effect of different definitions of concavity on students' understanding was investigated. Students enrolled in the calculus-II course in the science and engineering faculties in Anadolu University, Turkey ... -
A fractal example of a continuous monotone function with vanishing derivatives on a dense set and infinite derivatives on another dense set
(2006)Inspired by the theory of analysis on fractals, we construct an example of a continuous, monotone function on an interval, which has vanishing derivatives on a dense set and infinite derivatives on another dense set. ... -
Euclidean realizations of Mauldin-Williams graphs
(2013)Graph-directed fractals are collections of metric spaces, each of which can be expressed as a union of several scaled copies of spaces from the collection. They give rise to weighted, directed graphs where the term comes ... -
Common diagonal stability of second order interval systems
(SciTePress, 2014)In this paper for second order interval systems we obtain necessary and sufficient conditions for the existence of a common diagonal solutions to the Lyapunov (Stein) inequality. Hurwitz and Schur cases are considered ... -
The performance of undergraduate students in the limit concept
(2009)In this work, we investigated first-year university students' skills in using the limit concept. They were expected to understand the relationship between the limit-value of a function at a point and the values of the ... -
Conceptual and procedural performance of undergraduate students in integration
(2009)We investigate the conceptual and procedural knowledge in integration of a group of students who has successfully completed a one-year calculus course. The participants are asked five questions and their responses are ... -
Constancy of maps into f-manifolds and pseudo f-manifolds
(2007)Constancy of some maps into certain f-manifolds and pseudo f-manifolds is discussed. As a result a Constancy Theorem is given, for maps of Riemannian manifolds into these manifolds, which recovers all the results obtained so far -
Affine contractions on the plane
(2007)Contractions play a considerable role in the theory of fractals. However, it is not easy to find contractions which are not similitudes. In this study, it is shown by counter examples that an affine transformation of the ... -
Degenerate spin structures and the Lévy-Leblond equation
(2006)Newton-Cartan manifolds and the Galilei group are defined by the use of co-rank one degenerate metric tensor. Newton-Cartan connection is lifted to the degenerate spinor bundle over a Newton-Cartan 4-manifold by the aid ...
