Displaying similar documents to “Some roughness results concerning reducibility for linear difference equations.”

Renormalization of exponential sums and matrix cocycles

Alexander Fedotov, Frédéric Klopp (2004-2005)

Séminaire Équations aux dérivées partielles

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In this paper, we present a new point of view on the renormalization of some exponential sums stemming from number theory. We generalize this renormalization procedure to study some matrix cocycles arising in spectral problems of quantum mechanics

The problem of kings.

Larsen, Michael (1995)

The Electronic Journal of Combinatorics [electronic only]

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Almost convergent sequence spaces derived by the domain of quadruple band matrix

Mustafa Cemil Bişgin (2020)

Annales Universitatis Paedagogicae Cracoviensis. Studia Mathematica

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In this work, we construct the sequence spaces f(Q(r,s,t,u)), f0(Q(r,s,t,u)) and fs(Q(r,s,t,u)), where Q(r,s,t,u) is quadruple band matrix which generalizes the matrices Δ3, B(r,s,t), Δ2, B(r,s) and Δ, where Δ3, B(r,s,t), Δ2, B(r,s) and Δ are called third order difference, triple band, second order difference, double band and difference matrix, respectively. Also, we prove that these spaces are BK-spaces and are linearly isomorphic to the sequence spaces f, f0 and fs, respectively. Moreover,...