Results 11 to 20 of about 105,191 (283)

Pre-Metric Spaces Along with Different Types of Triangle Inequalities

open access: yesAxioms, 2018
The T 1 -spaces induced by the pre-metric spaces along with many forms of triangle inequalities are investigated in this paper. The limits in pre-metric spaces are also studied to demonstrate the consistency of limit concept in the induced ...
Hsien-Chung Wu
doaj   +3 more sources

Common Coincidence Points and Common Fixed Points in Fuzzy Semi-Metric Spaces

open access: yesMathematics, 2018
We propose the so-called fuzzy semi-metric space in which the symmetric condition is not assumed to be satisfied. In this case, there are four kinds of triangle inequalities that should be considered.
Hsien-Chung Wu
doaj   +1 more source

Some Improvements of the Cauchy-Schwarz Inequality Using the Tapia Semi-Inner-Product

open access: yesMathematics, 2020
The aim of this article is to establish several estimates of the triangle inequality in a normed space over the field of real numbers. We obtain some improvements of the Cauchy–Schwarz inequality, which is improved by using the Tapia semi-inner-product ...
Nicuşor Minculete, Hamid Reza Moradi
doaj   +1 more source

Neutrosophic Double Controlled Metric Spaces and Related Results with Application

open access: yesFractal and Fractional, 2022
In this paper, the authors introduce the notion of neutrosophic double controlled metric spaces as a generalization of neutrosophic metric spaces. For this purpose, two non-comparable functions, ξ and Γ, are used in triangle inequalities.
Fahim Uddin   +5 more
doaj   +1 more source

On the Extension of the Erdos-Mordell Type Inequalities [PDF]

open access: yes, 2014
We discuss the extension of inequality R_A >= c/a * r_b + b/a * r_c to the plane of triangle ABC. Based on the obtained extension, in regard to all three vertices of the triangle, we get the extension of Erdos-Mordell inequality, and some inequalities of
Malesevic, Branko   +3 more
core   +3 more sources

On Sharp Triangle Inequalities in Banach Spaces II

open access: yesJournal of Inequalities and Applications, 2010
Sharp triangle inequality and its reverse in Banach spaces were recently showed by Mitani et al. (2007). In this paper, we present equality attainedness for these inequalities in strictly convex Banach spaces.
Kichi-Suke Saito, Ken-Ichi Mitani
doaj   +2 more sources

On certain new refinements of Finsler-Hadwiger inequalities

open access: yesJournal of Inequalities and Applications, 2017
Several refinements of the Finsler-Hadwiger inequality and its reverse in the triangle are discussed. A new one parameter family of Finsler-Hadwiger inequalities and their reverses are proved.
Omran Kouba
doaj   +1 more source

The isometries of the cut, metric and hypermetric cones [PDF]

open access: yes, 2003
We show that the symmetry groups of the cut cone Cut(n) and the metric cone Met(n) both consist of the isometries induced by the permutations on {1,...,n}; that is, Is(Cut(n))=Is(Met(n))=Sym(n) for n>4. For n=4 we have Is(Cut(4))=Is(Met(4))=Sym(3)xSym(4).
Deza, Antoine   +2 more
core   +11 more sources

Properties of distance spaces with power triangle inequalities

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2016
Metric spaces provide a framework for analysis and have several very useful properties. Many of these properties follow in part from the  triangle inequality.
D. Greenhoe
doaj   +1 more source

From developing to developed: Mechanisms of health inequalities among seniors in China and Japan under macro-field control

open access: yesFrontiers in Psychology, 2022
The behavioral characteristics, health statuses, and survival times of seniors in China and Japan using the fixed cohort method and constructed relationship models among capital, habitus, and health based on Pierre Bourdieu’s social theory of practice ...
Ai-Bin, Lin Shengai
doaj   +1 more source

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