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On trigonometric functional equations of rectangular type

✍ Scribed by Jukang Chung; Palaniappan Kannappan; Prasanna K. Sahoo


Publisher
Springer
Year
1997
Tongue
English
Weight
510 KB
Volume
53
Category
Article
ISSN
0001-9054

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The stability of the functional equation F (x + y) -G(xy) = 2H (x)K(y) over the domain of an abelian group G and the range of the complex field is investigated. Several related results extending a number of previously known ones, such as the ones dealing with the sine functional equation, the d'Alem