YEAR
Monograph Series
Proceedings
of
The 9'th Colloquium on the Qualitative Theory of Differential Equations
(June 28--July 1, 2011, Szeged, Hungary)
edited by: L. Hatvani, T. Krisztin and R. Vajda
Special Edition I (2009)
Honoring the Career of John Graef
on the Occasion of His Sixty-Seventh Birthday
edited by: P. Eloe and J. Henderson
Proceedings
of
The 6'th Colloquium on the Qualitative Theory of Differential Equations
(August 10--14, 1999, Szeged, Hungary)
edited by: G. Makay and L. Hatvani
Proceedings
of
The 7'th Colloquium on the Qualitative Theory of Differential Equations
(July 14--18, 2003, Szeged, Hungary)
edited by: L. Hatvani and T. Krisztin
Proceedings
of
The 8'th Colloquium on the Qualitative Theory of Differential Equations
(June 25--28, 2007, Szeged, Hungary)
edited by: L. Hatvani and T. Krisztin
Proceedings
of
The 10'th Colloquium on the Qualitative Theory of Differential Equations
(July 1–4, 2015, Szeged, Hungary)
edited by: T. Krisztin
Addendum posted 21/07/2014.
The Editors have been informed by Professors J. Redati and M. Allaoui that there do not exist functions $M$ satisfying $(\mathbf{M}_1)$ and $(\mathbf{M}_2)$, so the content of this paper is vacuous. In fact, $(\mathbf{M}_2)$ implies that $\widehat{M}(t)/t$ is decreasing for $t>0$ and this contradicts $(\mathbf{M}_1)$.