scientific article; zbMATH DE number 7123465
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Publication:5240526
DOI10.4134/CKMS.c170487zbMath1427.39012MaRDI QIDQ5240526
Elhoucien Elqorachi, Omar Ajebbar
Publication date: 28 October 2019
Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.
stabilitysemigroupamenable groupmultiplicative functioninvolutive automorphismadditive functionaddition lawsubtraction law
Stability, separation, extension, and related topics for functional equations (39B82) Functional equations for functions with more general domains and/or ranges (39B52) Functional equations for complex functions (39B32)
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A generalization of the cosine addition law on semigroups ⋮ Cosine subtraction laws ⋮ The cosine and sine addition and subtraction formulas on semigroups
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