20 citations · 25 across the 5 of their papers we have counts for
5 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.
Mean Value Theorems and L'Hospital-Type Rules for Regulated Functions
Ahmed Ghatasheh
We introduce a generalization of Cauchy's mean value theorem for regulated functions. Building on this, we extend both L'Hospital's rule and L'Hospital's monotone rule to quotients…
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…