2019
DOI: 10.56947/gjom.v7i1.182
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Cosine operator functions in R^2

Abstract: In this paper, we consider the topic from the theory of cosine operator functions in 2-dimensional real vector space, which is an interplay between functional analysis and matrix theory. For the various cases of a given real matrix A= [α , β; γ , δ] we find out the appropriate cosine operator function C(t)= [a(t), b(t); c(t), d(t)], (t \in R) in a real vector space R2 as the solutions of the Cauchy problem C''(t)=AC(t), C(0)=I, C'(0)=0.

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“…The necessary and sufficient condition for E to be orthogonal is that E is self-adjoint [11]. Moreover, we refer more articles to understand the background this article [17,18,4,5,14].…”
Section: Introductionmentioning
confidence: 99%
“…The necessary and sufficient condition for E to be orthogonal is that E is self-adjoint [11]. Moreover, we refer more articles to understand the background this article [17,18,4,5,14].…”
Section: Introductionmentioning
confidence: 99%