We solve the Ulam problem for the sine addition formula in the spaces of Schwartz distributions and Gelfand hyperfunctions with respect to bounded distributions and bounded hyperfunctions.
Cite this article
Jaeyoung Chung, Dohan Kim, Ulam Problem for the Sine Addition Formula in Hyperfunctions. Publ. Res. Inst. Math. Sci. 50 (2014), no. 2, pp. 227–250DOI 10.4171/PRIMS/131