Results 11 to 20 of about 1,441,771 (239)

Two Mappings Related To Semi-Inner Products And Their Applications in Geometry of Normed Linear Spaces [PDF]

open access: yes, 1998
In this paper we introduce two mappings associated with the lower and upper semiinner product (.,.)i and (.,.)s and with semi-inner products [.,.] (in the sense of Lumer) which generate the norm of a real normed linear space, and study properties of ...
Koliha, Jerry J, Dragomir, Sever S
core   +6 more sources

On New Notions of Orthogonality in Normed Spaces via the 2-HH-Norms [PDF]

open access: yes, 2009
Kikianty and Dragomir in 2008 introduced the p-HH-norms on the Cartesian product of two copies of a normed space, which are equivalent to the well-known p-norms. In this paper, notions of orthogonality in terms of 2-HH-norms are introduced.
Dragomir, Sever S, Kikianty, Eder
core   +6 more sources

A Lower Bound for Continuous Convex Mappings on Normed Linear Spaces [PDF]

open access: yes, 1998
A lower bound for continuous convex mappings defined on normed linear spaces in terms of norm derivatives and best approximants is ...
Dragomir, Sever S
core   +6 more sources

A Survey of Recent Reverses for the Generalised Triangle Inequality in Normed Spaces [PDF]

open access: yes, 2004
Recent reverses of the generalised triangle inequality in normed linear spaces that complement the classical results of Diaz and Metcalf are ...
Dragomir, Sever S
core   +5 more sources

Stability of mappings on multi-normed spaces [PDF]

open access: yes, 2007
In this paper, we define multi-normed spaces, and investigate some properties of multi-bounded mappings on multi-normed spaces. Moreover, we prove a generalized Hyers–Ulam–Rassias stability theorem associated to the Cauchy additive equation for mappings ...
Dales, H.G., Moslehian, Mohammad Sal
core   +4 more sources

Some Fixed Point Theorems in Fuzzy n-Normed Spaces [PDF]

open access: yes, 2010
The main purpose of this paper is to study the existence of a fixed points in fuzzy n-normed spaces. we proved our main results, a fixed point theorem for a self mapping and a common fixed point theorem for a pair of weakly compatible mappings on fuzzy n-
Rahmat, Mohamad Rafi Segi   +1 more
core   +1 more source

Some Remarks on Fuzzy N-Normed Spaces [PDF]

open access: yes, 2009
It is shown that every fuzzy n-normed space naturally induces a locally convex topology, and that every finite dimensional fuzzy n-normed space is ...
Elagan, S.
core   +1 more source

Fixed Points and Stability for Functional Equations in Probabilistic Metric and Random Normed Spaces

open access: yesFixed Point Theory and Applications, 2009
We prove a general Ulam-Hyers stability theorem for a nonlinear equation in probabilistic metric spaces, which is then used to obtain stability properties for different kinds of functional equations (linear functional equations, generalized equation of ...
Viorel Radu, Liviu Cădariu
doaj   +2 more sources

On Functions Preserving Convergence of Series in Fuzzy n-Normed Spaces [PDF]

open access: yes, 2009
The purpose of this paper is to introduce finite convergence sequences and functions preserving convergence of series in fuzzy n-normed ...
Rahmat, Mohamad Rafi Segi, Elagan, Sayed
core   +1 more source

Characterization of Best Approximants from Convex Subsets and Level Sets in Normed Linear Spaces [PDF]

open access: yes, 1999
Some new characterization of best approximants from convex subsets and level sets of convex mappings in normed linear spaces in terms of norm derivatives and sub-orthogonality in Birkhoff's sense are ...
Dragomir, Sever S
core   +6 more sources

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