International Mathematics Research Notices (2007) Vol. 2007 : article ID rnm008, 28 pages, doi:10.1093/imrn/rnm008
published on
May 24, 2007
Copyright © The Author 2007. Published by Oxford University Press.
Classification of Horizontal Loops in the Standard Engel space
Jiro Adachi
Department of Mathematics, Hokkaido University, Sapporo, 060-0810, Japan
Correspondence: Correspondence to be sent to: j-adachi{at}math.sci.hokudai.ac.jp
We study Engel horizontal loops, that is, embedded circles that are tangent to Engel distributions everywhere. It is proved that Engel horizontal loops in the standard Engel space are classified by their rotation number with respect to the canonical trivialization of the Engel distribution.
Communicated by Yakov Eliashberg

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