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This article is cited in 9 scientific papers (total in 9 papers)
Directional differentiability of the distance function
S. I. Dudov
Abstract:
In this paper we construct an invariant of integrable Hamiltonian systems with two degrees of freedom (the so-called st-molecule) enabling such systems to be classified on three-dimensional constant-energy surfaces up to orientation-preserving diffeomorphisms taking trajectories into trajectories.
Received: 21.12.1993
Citation:
S. I. Dudov, “Directional differentiability of the distance function”, Mat. Sb., 186:3 (1995), 29–52; Sb. Math., 186:3 (1995), 337–358
Linking options:
https://www.mathnet.ru/eng/sm20https://doi.org/10.1070/SM1995v186n03ABEH000020 https://www.mathnet.ru/eng/sm/v186/i3/p29
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