On the behavior of mappings which do not satisfy Hyers-Ulam stability
Authors: Themistocles M. Rassias and Peter Šemrl
https://www.ams.org/journals/proc/1992-114-04/S0002-9939-1992-1059634-1/
On the behavior of mappings which do not satisfy Hyers-Ulam stability
Authors: Themistocles M. Rassias and Peter Šemrl
https://www.ams.org/journals/proc/1992-114-04/S0002-9939-1992-1059634-1/
https://www.ams.org/journals/proc/1992-114-04/S0002-9939-1992-1059634-1/S0002-9939-1992-1059634-1.pdf
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근데 이걸로만 문제 풀기 어렵당; - dc App
https://blog.naver.com/muramai/221777652608