Advances in Difference Equations
Volume 2008 (2008), Article ID 143053, 5 pages
Research Article

Stability of General Newton Functional Equations for Logarithmic Spirals

Soon-Mo Jung1 and John Michael Rassias2

1Mathematics Section, College of Science and Technology, Hong-Ik University, 339-701 Chochiwon, South Korea
2Mathematics Section, Pedagogical Department EE, National and Capodistrian University of Athens, 4 Agamemnonos Street, Aghia Paraskevi, Athens, 15342 Attikis, Greece

Received 16 October 2007; Revised 8 January 2008; Accepted 25 January 2008

Academic Editor: Ulrich Krause

Copyright © 2008 Soon-Mo Jung and John Michael Rassias. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


We investigate the generalized Hyers-Ulam stability of Newton functional equations for logarithmic spirals.