Ngày tải lên :
22/06/2014, 22:20
... Their Applications,Birkh
ă
auser Boston,
Boston, Mass, USA, 1998.
[2] J. Acz
´
el and J. Dhombres, Functional Equations in Several Variables, vol. 31 of Encyclopedia of
MathematicsandItsApplications, ... K
n
: a
i
= 0fori ∈ L}.
References
[1] D. H. Hyers, G. Isac, and Th. M. Rassias, Stability of Functional Equations in Several Variables,
vol. 34 of Progress in Nonlinear Dierential Equations and ... Proceedings of the American Mathematical
Society, vol. 80, no. 3, pp. 411–416, 1980.
Adam Najdecki: Institute of Mathematics, University of Rzesz
´
ow, Rejtana 1 6A,
35-310 Rzesz
´
ow, Poland
Email address:...