Abstract
In this paper, we examine the order of magnitude of the octonion Fourier transform (OFT) for real-valued functions of three variables and satisfiying certain Lipschitz conditions. In addition, using the analog of the operator Steklov, we construct the generalized modulus of smoothness, and also using the Laplacian operator we define the K-functional. We use the octonion Fourier transform (OFT) of real-valued functions of three variables to prove the equivalence between K-functionals and modulus of smoothness in the space of square-integrable functions (in Lebesgue sense).
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Achak, A., Bouhlal, A., Daher, R., Safouane, N.: Titchmarsh’s theorem and some remarks concerning the right-sided quaternion Fourier transform, Boletín de la Sociedad Matemática Mexicana (2020)
Belkina, E.S., Platonov, S.S.: Equivalence of K-functionnals andmodulus of smoothness constructed by generalized dunkl translations. Izv. Vyssh. Uchebn. Zaved. Mat. 8, 3–15 (2008)
Blaszczyk, L.: A generalization of the octonion fourier transform to 3-D octonion-valued signals - properties and possible applications to 3-D LTI partial differential systems. Multidimensional Systems and Signal Processing (2020)
Blaszczyk, L., Snopek, K.M.: Octonion fourier transform of real-valued functions of three variables - selected properties and examples. Signal Process. 136, 29–37 (2017)
Bouhlal, A., Achak, A., Daher, R., Safouane, N.: Dini-Lipschitz functions for the quaternion linear canonical transform. Rendiconti del Circolo Matematico di Palermo Series 2, (2020)
Bray, W.O., Pinsky, M.A.: Growth properties of Fourier transforms via moduli of continuity. J. Funct. Anal. 255, p2265-2285 (2009)
Bray, W.O.: Growth and Integrability of Fourier Transforms on Euclidean Space. J. Fourier Anal Appl (2014). https://doi.org/10.1007/s00041-014-9354-1
Chanyal, B.C., Bisht, P.S., Negi, O.P.S.: Generalized octonion electrodynamics. Int. J. Theor. Phys. 49, 1333–1343 (2010)
Dai, Feng: Some equivalence theorems with K-Functionals. J. Appr. Theory 121, 143–157 (2003)
Dickson, L.E.: On quaternions and their generalization and the history of the eight square theorem. Ann. Math. 20(3), 155–171 (1919)
Ditzian, Z., Totik, V.: Moduli of smoothness, moduli of smoothness. Springer-Verlag, New York etc. (1987)
Fahlaoui, S., Boujeddaine, M., El Kassimi, M.: Fourier transforms of dini-lipschitz functions on rank 1 symmetric spaces. Mediterr. J. Math. 13(6), 4401–4411 (2016)
Hahn, S.L., Snopek, K.M.: The unified theory of n-dimensional complex and hypercomplex analytic signals. Bull. Polish Ac. Sci., Tech. Sci. 59(2), 167–181 (2011)
Kaplan, A.: Quaternions and octonions in mechanics. Rev. De. la Unión Mathe. Argent. 49(2), 45–53 (2008)
Peetre, J.: A theory of interpolation of normed spaces, notes de Universidade de Brasilia, (1963)
Potapov, M.K.: Application of the operator of generalized translation in approximation theory. Vestnik Moskovskogo Universiteta, Seriya Matematika, Mekhanika 3, 38–48 (1998)
Platonov, S.S.: An Analogue of the Titchmarsh theorem for the Fourier transform on Locally Compact Vilenkin Groups, p-Adic Numbers. Ultrametric Anal. Appl. 9(4), 306–313 (2017)
Sudbery, A.: Quaternionic analysis. Math. Proc. Cambridge Phil. Soc. 85, 199–225 (1979)
Snopek, K.M.: New hypercomplex analytic signals and fourier transforms in cayleydickson algebras. Electron. Telecommun. Quater. 55(3), 403–415 (2009)
Snopek, K. M.: The n-d analytic signals and fourier spectra in complex and hypercomplex domains, In: Proc. 34th Int. Conf. on Telecommunications and Signal Processing, Budapest, pages 423-427, (2011)
Snopek, K.M.: The study of properties of n-d analytic signals in complex and hypercomplex domains. Radioengineering 21(2), 29–36 (2012)
Snopek, K.M.: Quaternions and octonions in signal processing-fundamentals and some new results, telecommunication review + telecommunication news. Tele- Radio-Electron. Inform. Technol. 6, 618–622 (2015)
Titchmarsh, E.C.: Introduction to the theory of Fourier integrals, pp. 115–118. Clarendon Press, Oxford (1937)
Younis, M.S.: Fourier transforms of Dini-Lipschitz Functions. Int. J. Math. Math. Sci. 9(2), 301–312 (1986)
Younis, M.S.: Fourier Transforms on \(L^p\) Spaces. Int. J. Math. Math. Sci. 9(2), 301–312 (1986)
Younis, M.S.: Fourier Transforms of Lipschitz Functions on Certain Lie Groups. Internat. J. Math. and Math. Sci. 439–448, (2001)
Younis, M.S.: Fourier transforms of Lipschitz functions on compact groups, Ph. D. Thesis. McMaster University (Hamilton, Ont., Canada, 1974)
Younis, M.S.: The Fourier transforms of Lipschitz functions on the heisenberg groups. Internat. J. Math. and Math. Sci. 24(1), 5–9 (2000)
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Bouhlal, A., Igbida, J. & Safouane, N. Octonion Fourier transform of Lipschitz real-valued functions of three variables on the octonion algebra. J. Pseudo-Differ. Oper. Appl. 12, 27 (2021). https://doi.org/10.1007/s11868-021-00405-y
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DOI: https://doi.org/10.1007/s11868-021-00405-y