Lower bounds for matrices on block weighted sequence spaces. I

R. Lashkaripour; D. Foroutannia

Displaying similar documents to “Lower bounds for matrices on block weighted sequence spaces. I”

Lambert multipliers between $L^{p}$ spaces

M. R. Jabbarzadeh, S. Khalil Sarbaz (2010)

Czechoslovak Mathematical Journal

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In this paper Lambert multipliers acting between $L^{p}$ spaces are characterized by using some properties of conditional expectation operator. Also, Fredholmness of corresponding bounded operators is investigated.

Some inequalities involving upper bounds for some matrix operators. I

R. Lashkaripour, D. Foroutannia (2007)

Czechoslovak Mathematical Journal

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In this paper we consider the problem of finding upper bounds of certain matrix operators such as Hausdorff, Nörlund matrix, weighted mean and summability on sequence spaces $l_{p} (w)$ and Lorentz sequence spaces $d (w, p)$ , which was recently considered in [9] and [10] and similarly to [14] by Josip Pecaric, Ivan Peric and Rajko Roki. Also, this study is an extension of some works by G. Bennett on $l_{p}$ spaces, see [1] and [2].

On Korovkin type theorem in the space of locally integrable functions

A. D. Gadjiev, R. O. Efendiyev, E. Ibikli (2003)

Czechoslovak Mathematical Journal

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It is shown that a Korovkin type theorem for a sequence of linear positive operators acting in weighted space $L_{p, w} (l o c)$ does not hold in all this space and is satisfied only on some subspace.

Displaying similar documents to “Lower bounds for matrices on block weighted sequence spaces. I”

Lambert multipliers between L p spaces

Some inequalities involving upper bounds for some matrix operators. I

On Korovkin type theorem in the space of locally integrable functions

Lambert multipliers between $L^{p}$ spaces