Süleyman Öğrekçi, Yasemin Başcı, Adil Mısır
abstract:
In this paper, we consider the stability problem of delay differential equations 
in the sense of Hyers-Ulam and Hyers-Ulam-Rassias. By using a well known fixed 
point alternative on generalized complete metric spaces, we obtain some new 
stability criteria. Our results extend and improve the results described in 
literature since their proofs are based on fewer and weaker assumptions than the 
recent results dealing with this problem. Some illustrative examples are also 
given to compare these results and visualize the improvement.
Mathematics Subject Classification: 24K20, 47H10
Key words and phrases: Delay differential equations, Ulam type stability, fixed point alternative