Hyers–Ulam stability of functional equations with a square-symmetric operation

The stability of the functional equation f(x ○ y) = H(f(x), f(y)) (x, y ∈ S) is investigated, where H is a homogeneous function and ○ is a square-symmetric operation on the set S. The results presented include and generalize the classical theorem of Hyers obtained in 1941 on the stability of the Cauchy functional equation.

Bulletin of the Museum of Comparative Zoology at Harvard College.

v.13 (1886-1888)

Bulletin of the Museum of Comparative Zoology at Harvard College.

v.12 (1885-1886)

Low-cost cottage construction in America: a study based on the housing collection in the Harvard social museum

by Winthrop A. Hamlin.

Bulletin of the Museum of Comparative Zoology at Harvard College.

v.26 (1894-1895)