Toute variété de dimension 4 dont le fibré tangent est trivial admet une structure d'Engel.
Every 4-manifold with trivial tangent bundle admits an Engel structure.
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@article{CRMATH_2005__340_1_43_0, author = {Vogel, Thomas}, title = {A construction of {Engel} structures}, journal = {Comptes Rendus. Math\'ematique}, pages = {43--48}, publisher = {Elsevier}, volume = {340}, number = {1}, year = {2005}, doi = {10.1016/j.crma.2004.11.011}, language = {en}, url = {http://archive.numdam.org/articles/10.1016/j.crma.2004.11.011/} }
TY - JOUR AU - Vogel, Thomas TI - A construction of Engel structures JO - Comptes Rendus. Mathématique PY - 2005 SP - 43 EP - 48 VL - 340 IS - 1 PB - Elsevier UR - http://archive.numdam.org/articles/10.1016/j.crma.2004.11.011/ DO - 10.1016/j.crma.2004.11.011 LA - en ID - CRMATH_2005__340_1_43_0 ER -
Vogel, Thomas. A construction of Engel structures. Comptes Rendus. Mathématique, Tome 340 (2005) no. 1, pp. 43-48. doi : 10.1016/j.crma.2004.11.011. http://archive.numdam.org/articles/10.1016/j.crma.2004.11.011/
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