The concept of evolution operator is used to introduce a weak Lie subgroup of a regular Lie group, and to give a new version of the third Lie theorem. This enables the author to formulate and to study the problem of integrability of infinite-dimensional Lie algebras. Several interesting examples are presented.
@article{701698, title = {An infinite dimensional version of the third Lie theorem}, booktitle = {Proceedings of the 21st Winter School "Geometry and Physics"}, series = {GDML\_Books}, publisher = {Circolo Matematico di Palermo}, address = {Palermo}, year = {2002}, pages = {[209]-217}, mrnumber = {MR1972436}, zbl = {1010.22025}, url = {http://dml.mathdoc.fr/item/701698} }
Rybicki, Tomasz. An infinite dimensional version of the third Lie theorem, dans Proceedings of the 21st Winter School "Geometry and Physics", GDML_Books, (2002), pp. [209]-217. http://gdmltest.u-ga.fr/item/701698/