5 citations · 5 across the 2 of their papers we have counts for
4 papers
Refuting a Recent Proof of the Invariant Subspace Problem
Ahmed Ghatasheh
This article demonstrates that the recent proof of the invariant subspace problem, as presented by Khalil et al., is incorrect.
Sign-Changing Points of Solutions of Homogeneous Sturm-Liouville Equations with Measure-Valued Coefficients
Ahmed Ghatasheh, Rudi Weikard
In this paper we investigate sign-changing points of nontrivial real-valued solutions of homogeneous Sturm-Liouville differential equations of the form , where $dα…
Spectral Theory for Systems of Ordinary Differential Equations with Distributional Coefficients
Ahmed Ghatasheh, Rudi Weikard
We study the spectral theory for the first-order system of differential equations on the real interval when is a constant, invertible skew-Hermitian matrix…
On Leighton's Comparison Theorem
Ahmed Ghatasheh, Rudi Weikard
We give a simple proof of a fairly flexible comparison theorem for equations of the type on a finite interval where , , , and are real…