Geodesic
Coordinate-free recording
Čelâbinskij fiziko-matematičeskij žurnal, Tome 4 (2019) no. 4, pp. 412-418 Cet article a éte moissonné depuis la source Math-Net.Ru

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The metrics of most geometries of maximum mobility can be written in the coordinateless form. In this paper, we consider some Helmholtz planes, which are geometries of maximum local mobility, whose coordinateless recording was unknown. Implicitly defined functions are found to construct such a record.
Keywords: two-dimensional geometries, geometry of maximum mobility, Helmholtz planes, metric function.
Mots-clés : group of transformations 
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G. G. Mikhailichenko; A. A. Simonov. Coordinate-free recording. Čelâbinskij fiziko-matematičeskij žurnal, Tome 4 (2019) no. 4, pp. 412-418. http://geodesic.mathdoc.fr/item/CHFMJ_2019_4_4_a3/

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