Results 21 to 30 of about 327,876 (275)

Classification of Complex Fuzzy Numbers and Fuzzy Inner Products

open access: yesMathematics, 2020
The paper is concerned with complex fuzzy numbers and complex fuzzy inner product spaces. In the classical complex number set, a complex number can be expressed using the Cartesian form or polar form. Both expressions are needed because one expression is
Jin Hee Yoon   +3 more
doaj   +1 more source

Numerical ranges and complex symmetric operators in semi-inner-product spaces

open access: yesJournal of Inequalities and Applications, 2022
We introduce the numerical range of a bounded linear operator on a semi-inner-product space. We compute the numerical ranges of some operators on ℓ 2 p ( C ) $\ell _{2}^{p}(\mathbb{C})$ ( 1 ≤ p < ∞ ) $(1\le p < \infty )$ and show that the numerical range
Il Ju An, Jaeseong Heo
doaj   +1 more source

$n$-inner product spaces and projections [PDF]

open access: yes, 2000
summary:This paper is a continuation of investigations of $n$-inner product spaces given in \cite{five,six,seven} and an extension of results given in \cite{three} to arbitrary natural $n$.
Ryż, Alicja, Misiak, Aleksander
core   +1 more source

On complete-cocomplete subspaces of an inner product space [PDF]

open access: yes, 1991
summary:In this note we give a measure-theoretic criterion for the completeness of an inner product space. We show that an inner product space $S$ is complete if and only if there exists a $\sigma $-additive state on $C(S)$, the orthomodular poset of ...
Hedlíková, Jarmila   +3 more
core   +1 more source

Considerations about the several inequalities in an inner product space

open access: yes, 2018
The aim of this paper is to show new results concerning the Cauchy-Schwarz inequality in an inner product space. We find an improvement of Buzano’s inequality and Richard’s inequality, which are extensions of the Cauchy-Schwarz inequality.
N. Minculete
semanticscholar   +1 more source

Quasi-inner product spaces of quasi-Sobolev spaces and their completeness

open access: yesIbn Al-Haitham Journal for Pure and Applied Sciences, 2018
      Sequences spaces  , m  ,  p  have called quasi-Sobolev spaces were  introduced   by Jawad . K. Al-Delfi in 2013  [1]. In this  paper , we deal with notion of  quasi-inner product  space  by using concept of  quasi-normed  space which is ...
Jawad Kadhim Khalaf Al-Delfi
doaj   +1 more source

On characterizations of inner product spaces [PDF]

open access: yesProceedings of the American Mathematical Society, 1975
The characterizations of inner product norms given by Tapia [10] make use of a generalized inner product in normed spaces. I shall give simpler proofs and a sharper result using a more geometrical approach. 1. The generalized inner product of a norm. Let /: V -R be a function defined on the real vector space V.
openaire   +2 more sources

Coordinating representation registers: linear algebra students' understanding of orthogonal Legendre polynomials in the inner product space ℙn in a technology-assisted learning environment

open access: yesAnnales de Didactique et de Sciences Cognitives, 2018
The purpose of this research study was to understand how linear algebra students in a university in the United States make sense of the orthogonal Legendre polynomials as vectors of the inner product space ℙn in a DGS (Dynamic Geometry Software)-MATLAB ...
Günhan Caglayan
doaj   +1 more source

Partial inner product spaces and semi-inner product spaces

open access: yesAdvances in Mathematics, 1981
AbstractA comparison is made between the two objects mentioned in the title. Connections between them are threefold: (i) both are particular instances of dual pairs of locally convex spaces; (ii) many partial inner product spaces consist of chains or lattices of semi-inner product spaces; (iii) the basic structure behind both of them is that of Galois ...
Antoine, J.P, Gustafson, K
openaire   +2 more sources

The Partial Inner Product Space Method: A Quick Overview

open access: yesAdvances in Mathematical Physics, 2010
Many families of function spaces play a central role in analysis, in particular, in signal processing (e.g., wavelet or Gabor analysis). Typical are 𝐿𝑝 spaces, Besov spaces, amalgam spaces, or modulation spaces. In all these cases, the parameter indexing
Jean-Pierre Antoine, Camillo Trapani
doaj   +1 more source

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