We prove that any first order -natural operator transforming projectable general connections on an -dimensional fibred-fibred manifold into general connections on the vertical prolongation of is the restriction of the (rather well-known) vertical prolongation operator lifting general connections on a fibred manifold into (the vertical prolongation of ) on .
@article{bwmeta1.element.ojs-doi-10_17951_a_2012_66_1_1-5, author = {Anna Bednarska}, title = {The vertical prolongation of the projectable connections}, journal = {Annales Universitatis Mariae Curie-Sk\l odowska, sectio A -- Mathematica}, volume = {66}, year = {2012}, language = {en}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.ojs-doi-10_17951_a_2012_66_1_1-5} }
Anna Bednarska. The vertical prolongation of the projectable connections. Annales Universitatis Mariae Curie-Skłodowska, sectio A – Mathematica, Tome 66 (2012) . http://gdmltest.u-ga.fr/item/bwmeta1.element.ojs-doi-10_17951_a_2012_66_1_1-5/
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