Ferreira, Milton2019-02-062019-02-062016Ferreira M., Gyroharmonic Analysis on Relativistic Gyrogroups, Mathematics Interdisciplinary Research, 1, 2016, 69-109.2538-36392476-4965http://hdl.handle.net/10400.8/3805Einstein, Möbius, and Proper Velocity gyrogroups are relativistic gyrogroups that appear as three different realizations of the proper Lorentz group in the real Minkowski space-time $\bkR^{n,1}.$ Using the gyrolanguage we study their gyroharmonic analysis. Although there is an algebraic gyro-isomorphism between the three models we show that there are some differences between them. Our study focus on the translation and convolution operators, eigenfunctions of the Laplace-Beltrami operator, Poisson transform, Fourier-Helgason transform, its inverse, and Plancherel's Theorem. We show that in the limit of large $t,$ $t \rightarrow +\infty,$ the resulting gyroharmonic analysis tends to the standard Euclidean harmonic analysis on ${\mathbb R}^n,$ thus unifying hyperbolic and Euclidean harmonic analysis.engGyrogroupsGyroharmonic analysisLaplace Beltrami operatorEigenfunctionsGeneralized Helgason-Fourier transformPlancherel’s theoremjournal article10.22052/MIR.2016.13908