## Hyperstability and superstability.(English)Zbl 1293.39013

Summary: This is a survey paper concerning the notions of hyperstability and superstability, which are connected to the issue of Ulam’s type stability. We present the recent results on those subjects.

### MSC:

 39B82 Stability, separation, extension, and related topics for functional equations 39-02 Research exposition (monographs, survey articles) pertaining to difference and functional equations
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### References:

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