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Bibliographic Details
Main Authors: Vasilyev, Alexander, Vasilyev, Vladimir, Bongay, Abu Bakarr Kamanda
Format: Preprint
Published: 2024
Subjects:
Online Access:https://arxiv.org/abs/2403.06445
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Table of Contents:
  • We consider linear bounded operators acting in Banach spaces with a basis, such operators can be represented by an infinite matrix. We prove that for an invertible operator there exists a sequence of invertible finite-dimensional operators so that the family of norms of their inverses is uniformly bounded. It leads to the fact that solutions of finite-dimensional equations converge to the solution of initial operator equation with infinite-dimensional matrix.