Browsing Makale Koleksiyonu by Publisher "Springer"
Now showing items 1-16 of 16
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The Bakry-Emery Ricci tensor and its applications to some compactness theorems
(Springer, 2012)Let (M, g) be a complete and connected Riemannian manifold of dimension n. By using the Bakry-Emery Ricci curvature tensor on M, we prove two theorems which correspond to the Myers compactness theorem. -
The Bochner technique and modification of the Ricci tensor
(Springer, 2009)In the well-known vanishing theorems of Bochner, the assumptions Ric a parts per thousand yen 0 and Ric a parts per thousand currency sign 0 are modified by using Hessian and Laplacian of a smooth positive function such ... -
Brown-Robinson method for interval matrix games
(Springer, 2011)In this paper, two-person interval matrix games are considered, and by means of acceptability index, Brown-Robinson method to find a mixed-strategy equilibrium is adapted to interval matrix games. Numerical examples are ... -
Comparisons of rotordynamic coefficients in stepped labyrinth seals by using Colebrook-White friction factor model
(Springer, 2007)The objective of this work is to observe the effects of friction factors for the stepped labyrinth seals. The gas flow through the seals creates net pressure and shear forces acting on the rotor. It is necessary to predict ... -
The Euler characteristic and signature of four-dimensional closed manifolds and the normalized Ricci flow equation
(Springer, 2016)Let M be a closed manifold of dimension four, and let [0, T) be the maximal time interval for the normalized Ricci flow equation. We prove that, if the normalized Ricci flow equation has a solution on the non-negative real ... -
Gifted students' attitudes towards mathematics: a qualitative multidimensional analysis
(Springer, 2019)The purpose of this study was to examine intellectually gifted students' attitude towards mathematics. Affective domain has been considered as one of the pillar of giftedness although a limited number of studies have been ... -
Modules Whose Direct Summands Are Fi-Extending
(Springer, 2017)A module M is called FI-extending if every fully invariant submodule of M is essential in a direct summand of M. It is not known whether a direct summand of an FI-extending module is also FI-extending. In this study, it ... -
On constructing total orders and solving vector optimization problems with total orders
(Springer, 2011)In this paper, we introduce a construction method of total ordering cone on R(n). It is shown that any total ordering cone on Rn is isomorphic to the cone R(lex)(n). Existence of a total ordering cone that contain given ... -
On minimal representations by a family of sublinear functions
(Springer, 2015)This paper is a continuation of Grzybowski et al. (J Glob Optim 46:589-601, 2010) and is motivated by the study of exhausters i.e. families of closed convex sets. By Minkowski duality closed convex sets correspond to ... -
On some geometric conditions for minimality of DCH-functions via DC-duality approach
(Springer, 2017)In this study, some optimality conditions for DCH-functions are given in terms of -faces using DC-duality approach. We introduce some geometric characterizations for the solution set of DCH-minimization problems by means ... -
On Strongly Precontinuous Functions
(Springer, 2008)In this paper, we give some characterizations of strongly precontinuous functions. Also we investigate some special properties of these function. -
Partial order relations on family of sets and scalarizations for set optimization
(Springer, 2018)In this study, some new order relations on family of sets are introduced by using Minkowski difference. The relations between these orders and the ordering cone of the vector space are obtained. It is shown that depending ... -
A plane contact problem for an elastic orthotropic strip
(Springer, 2011)The contact of a punch with an elastic orthotropic strip is considered. A singular integral equation is derived for the contact pressure. The analytic expression of the associated kernel is unique for all types of orthotropy. ... -
Seiberg-Witten type monopole equations on 8-manifolds with Spin(7) holonomy as minimizers of a quadratic action
(Springer, 2003)We obtain an elliptic system of monopole equations on 8-manifolds with Spin(7) holonomy by minimizing an action involving negative spinors coupled to an abelian gauge field. -
Weak Fenchel and weak Fenchel-Lagrange conjugate duality for nonconvex scalar optimization problems
(Springer, 2012)In this work, by using weak conjugate maps given in (Azimov and Gasimov, in Int J Appl Math 1:171-192, 1999), weak Fenchel conjugate dual problem, , and weak Fenchel Lagrange conjugate dual problem are constructed. Necessary ... -
When is the SIP (SSP) property inherited by free modules
(Springer, 2006)A right R-module M has right SIP (SSP) if the intersection (sum) of two direct summands of M is also a direct summand. It is shown that the right SIP (SSP) is not a Morita invariant property and that a nonsingular ...