Hyers–Ulam stability on local fractal calculus and radioactive decay Alireza Khalili Golmankhaneh, Cemil Tunç and Hamdullah Şevli Eur. Phys. J. Spec. Top., 230 21-22 (2021) 3889-3894 Published online: 09 November 2021 DOI: 10.1140/epjs/s11734-021-00316-5