Abstract
The group of automorphisms of the Galilei groupG: Aut(G) is calculated. It is shown that Aut(G) has the structure of a semi-direct product byG of the group ℝ *m ×ℝm where ℝm is the group of reals noted multiplicatively and ℝ *m <ℝm is the subgroup of positive reals.
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References
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Marmo, G., Whiston, G.S. The group of automorphisms of the galilei group. Int J Theor Phys 6, 293–299 (1972). https://doi.org/10.1007/BF00672665
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DOI: https://doi.org/10.1007/BF00672665