We classify all -natural operators transforming second order connections Γ: Y → J²Y on a fibred manifold Y → M into second order connections on the vertical Weil bundle corresponding to a Weil algebra A.
@article{bwmeta1.element.bwnjournal-article-doi-10_4064-ap92-3-2, author = {J. Kurek and W. M. Mikulski}, title = {Constructions on second order connections}, journal = {Annales Polonici Mathematici}, volume = {92}, year = {2007}, pages = {215-223}, zbl = {1133.58002}, language = {en}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-ap92-3-2} }
J. Kurek; W. M. Mikulski. Constructions on second order connections. Annales Polonici Mathematici, Tome 92 (2007) pp. 215-223. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-ap92-3-2/