Geodesic
Identification of Dynamical Trajectories of a Particle of Variable Mass as Autoparallels
Zbornik radova, Knj. 8 (1960) no. 1 
Veljko A. Vujičić. Identification of Dynamical Trajectories of a Particle of Variable Mass as Autoparallels. Zbornik radova, Knj. 8 (1960) no. 1. http://geodesic.mathdoc.fr/item/ZR_1960_Knj_8_1_a11/
@article{ZR_1960_Knj_8_1_a11,
     author = {Veljko A. Vuji\v{c}i\'c},
     title = {Identification of {Dynamical} {Trajectories} of a {Particle} of {Variable} {Mass} as {Autoparallels}},
     journal = {Zbornik radova},
     pages = {151 - 156},
     year = {1960},
     volume = {Knj. 8},
     number = {1},
     url = {http://geodesic.mathdoc.fr/item/ZR_1960_Knj_8_1_a11/}
}
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Voir la notice de l'article provenant de la source eLibrary of Mathematical Institute of the Serbian Academy of Sciences and Arts

Comparison of tensorial equations of motion of a particle of variable mass with equations (4) of autoparallels in an $L_n$ furnishes the coefficients of connection of $L_n$ such that the autoparallels are trajectories of the particle. Analysis of (11) gives the conditions under which trajectories of the particle are geodesics in a riemannian space. Trajectories are identified, too, as autoparallels in a Weyl space. The forces considered in the papar are independent of velociti s.