Abstract
We study the functional equation
for all \(x, y, z\in G\), \(f_i: G\rightarrow H, i=1, 2, \ldots , 7\), where G is a group, H is an abelian group, and we present its general solution when G is a free group. Solutions on other selected groups are also given.
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References
Aczél, J., Chung, J.K., Ng, C.T.: Symmetric second differences in product form on groups. In: Rassias, Th.M. (Ed.) Topics in mathematical analysis, 1-22, Ser. Pure. Math. 11, Word Scientific, Singapore (1989)
Baron, K., Kannappan, Pl.: On the Cauchy difference. Aequ. Math. 46(1–2), 112–118 (1993)
Ebanks, B.: Generalized Cauchy difference functional equations. Aequ. Math. 70(1–2), 154–176 (2005)
Ebanks, B.: Generalized Cauchy difference equations. II. Proc. Am. Math. Soc. 136(11), 3911–3919 (2008)
Faĭziev, V.A., Sahoo, P.K.: Solution of Whitehead equation on groups. Math. Bohem. 138(2), 171–180 (2013)
Heuvers, K.J.: A characterization of Cauchy kernels. Aequ. Math. 40(2–3), 281–306 (1990)
Heuvers, K.J.: Another logarithmic functional equation. Aequ. Math. 58(3), 260–264 (1999)
Li, L., Ng, C.T.: Functions on semigroups with vanishing finite Cauchy differences. Aequ. Math. 90(1), 235–247 (2016)
Ng, C.T.: Jensen’s functional equation on groups. Aequ. Math. 39(1), 85–99 (1990)
Ng, C.T., Zhao, H.Y.: Kernel of the second order Cauchy difference on groups. Aequ. Math. 86(1–2), 155–170 (2013)
Ng, C.T.: Kernels of higher order Cauchy differences on free groups. Aequ. Math. 89(1), 119–147 (2015)
Stetkaer, H.: The kernel of the second order Cauchy difference on semigroups. Aequ. Math. 91(2), 1–10 (2017)
Whitehead, J.H.C.: A certain exact sequence. Ann. Math. 52(2), 51–110 (1950)
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This work was partially supported by the National Natural Science Foundation of China (Grant No. 11971081), Foundation of Chongqing Municipal Education Commission (Grant No. KJQN201900525) the Natural Science Foundation of Chongqing (Grant No. cstc2020jcyj-msxmX0857), Research Project of Chongqing Education Commission (Grant No. CXQT21014).
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Luo, Y., Zhao, H.Y. A Pexiderization of Whitehead’s Equation. Results Math 78, 23 (2023). https://doi.org/10.1007/s00025-022-01800-7
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DOI: https://doi.org/10.1007/s00025-022-01800-7