Geodesic
Projective equivalence of smooth functions on a~plane
Izvestiâ vysših učebnyh zavedenij. Matematika, no. 12 (2013), pp. 69-71

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In this paper we find differential invariants for the action of the projective group on the space of smooth functions on the plane and propose a classification of orbits of this action.
Keywords: projective group, differential invariant
Mots-clés : jet space. 
@article{IVM_2013_12_a5,
     author = {P. V. Bibikov},
     title = {Projective equivalence of smooth functions on a~plane},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {69--71},
     publisher = {mathdoc},
     number = {12},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2013_12_a5/}
}
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P. V. Bibikov. Projective equivalence of smooth functions on a~plane. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 12 (2013), pp. 69-71. http://geodesic.mathdoc.fr/item/IVM_2013_12_a5/