Geodesic
The Euler derivative. An intrinsic approach to the calculus of variations.
Mathematica Scandinavica, Tome 42 (1978), pp. 313-333.

Voir la notice de l'article provenant de la source European Digital Mathematics Library

Mots-clés : Bundle of Alpha-Jets, Variational Problems, Euler Derivative 
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     title = {The {Euler} derivative. {An} intrinsic approach to the calculus of variations.},
     journal = {Mathematica Scandinavica},
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Jaak Peetre. The Euler derivative. An intrinsic approach to the calculus of variations.. Mathematica Scandinavica, Tome 42 (1978), pp. 313-333. http://geodesic.mathdoc.fr/item/MS2_1978__42_166595/