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A Kannappan-Cosine Functional Equation on Semigroups

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In this paper we determine the complex-valued solutions of the Kannappan-cosine functional equation g(xyz0) = g(x)g(y) − f(x)f(y), x, y ∈ S, where S is a semigroup and z0 is a fixed element in S.

eISSN:
2391-4238
Langue:
Anglais
Périodicité:
2 fois par an
Sujets de la revue:
Mathematics, General Mathematics