A. Aswhad, A. (2010). On the Riesz Means of Expansion by Riesz Bases Formed by Eigen Functions for the Ordinary Differential Operator of 2m-th Order. , 23(2), 159-167.
A. A. Aswhad. "On the Riesz Means of Expansion by Riesz Bases Formed by Eigen Functions for the Ordinary Differential Operator of 2m-th Order". , 23, 2, 2010, 159-167.
A. Aswhad, A. (2010). 'On the Riesz Means of Expansion by Riesz Bases Formed by Eigen Functions for the Ordinary Differential Operator of 2m-th Order', , 23(2), pp. 159-167.
A. Aswhad, A. On the Riesz Means of Expansion by Riesz Bases Formed by Eigen Functions for the Ordinary Differential Operator of 2m-th Order. , 2010; 23(2): 159-167.

On the Riesz Means of Expansion by Riesz Bases Formed by Eigen Functions for the Ordinary Differential Operator of 2m-th Order

Ibn Al-Haitham Journal For Pure And Applied Science
Article 1, Volume 23, Issue 2, 2010, Pages 159-167
Author
A. A. Aswhad
Abstract
The aim of this paper is to prove a theorem on the Riesz means of expansions with respect to Riesz bases, which extends the previous results of [1] and [2] on the Schrödinger operator and the ordinary differential operator of 4-th order to the operator of order 2m by using the eigen functions of the ordinary differential operator.
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