The stability problem of functional equations originated from a questi... - dofaq.co
hyers–ulam–rassias stability

The stability problem of functional equations originated from a questi...

wikipedia - 09 Jul 2015
The stability problem of functional equations originated from a question of Stanisław Ulam, posed in 1940, concerning the stability of group homomorphisms. In the next year, Donald H. Hyers gave a partial affirmative answer to the question of Ulam in the context of Banach spaces in the case of additive mappings, that was the first significant breakthrough and a step toward more solutions in this area. Since then, a large number of papers have been published in connection with various generalizations of Ulam

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