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.

Oscillating systems damped by resistance proportional to the square of the velocity,

"Reprinted from the Physical review, n. s., vol. X, no. 5, November, 1917."

An illustrated catalogue of pictures and portraits now at 19 Portman square /

Mode of access: Internet.

Continued-product algorithms for division, logarithm, exponential and square root in radix ten /

Typescript.

Lanthanide series rare earths : an annotated list of unclassified references.

AEC Report No. TID-3029.

Catalogue of the London library, St. Jame's square,

Accompanied by "Supplement 1-8. (1902-Mar.1, 1911) by C. T. Hagberg Wright." (8 v. 27 cm.) Published: London, Williams and Norgate, 1904-11.

Report of the First American conference for democracy and terms of peace held at Madison Square Garden, New York City, May 30 and 31st, 1917.

Mode of access: Internet.

A.S.T.M. manual on presentation of data : including Supplement A ... Supplement B ... Tables of squares and square roots /

Manual "originally issued in 1933; two supplements covering additonal material ... issued separately in 1935 ... combining this material in one volume and amplifying certain sections of the text"--Fore. to second printing, March, 1937.

Piccadilly in three centuries, with some account of Berkeley square and the Haymarket,

Mode of access: Internet.

The Prince of Washington Square; an up-to-the-minute story,

Mode of access: Internet.