Zobrazeno 1 - 10
of 77
pro vyhledávání: '"Deschamps, Guillaume"'
Autor:
Dussarrat, Pierre1 (AUTHOR) pierre.dussarrat@eumetsat.int, Deschamps, Guillaume1 (AUTHOR), Coppens, Dorothee1 (AUTHOR)
Publikováno v:
Remote Sensing. Dec2024, Vol. 16 Issue 23, p4449. 18p.
Autor:
Deschamps, Guillaume
We first make a little survey of the twistor theory for hypercomplex, generalized hypercomplex, quaternionic or generalized quaternionic manifolds. This last theory was iniated by Pantilie, who shows that any generalized almost quaternionic manifold
Externí odkaz:
http://arxiv.org/abs/1601.03882
Autor:
Dussarrat, Pierre1 (AUTHOR) pierre.dussarrat@eumetsat.int, Deschamps, Guillaume1 (AUTHOR), Theodore, Bertrand1 (AUTHOR), Coppens, Dorothee1 (AUTHOR), Standfuss, Carsten2 (AUTHOR), Tournier, Bernard2 (AUTHOR)
Publikováno v:
Remote Sensing. Jun2023, Vol. 15 Issue 11, p2873. 10p.
Autor:
Deschamps, Guillaume
To give an almost quaternionic structure on a 4n-manifold $M$ is equivalent to give its bundle of twistors $Z(Q)\longrightarrow M$. When $Q$ is invariant under a torsion free connection, $Z(Q) $ can be provided with an almost complex structure $ \mat
Externí odkaz:
http://arxiv.org/abs/1401.5605
Autor:
Deschamps, Guillaume
The aim of this article is to use generalized complex structures in order to extend the definition of twistor spaces given by Penrose. We will adapt the integrability result of Atiyah, Hitchin and Singer. We will deduce new correspondences betwenn di
Externí odkaz:
http://arxiv.org/abs/1209.5870
Publikováno v:
Bulletin de la soci\'et\'e math\'ematique de France, 2017, 145 (1), pp.1-27
We compute the hessian of the natural Hermitian form successively on the Calabi family of a hyperk\"ahler manifold, on the twistor space of a 4-dimensional anti-self-dual Riemannian manifold and on the twistor space of a quaternionic K\"ahler manifol
Externí odkaz:
http://arxiv.org/abs/1202.0183
Autor:
Deschamps, Guillaume
In 2002 Meersseman-Verjovsky [2] constructed a smooth, codimension-one, foliation on 5-sphere by complex surfaces with two compact leaves. The aim of this note is to improve their construction in order to give a smooth foliation on 5-sphere by comple
Externí odkaz:
http://arxiv.org/abs/1003.4439
Autor:
Deschamps, Guillaume
Let (M,g) be a Riemannian 4-manifold. The twistor space Z->M is a CP1-bundle whose total space Z admits a natural metric h. The aim of this article is to study properties of complex structures on (Z,h) which are compatible with the CP1-fibration and
Externí odkaz:
http://arxiv.org/abs/0810.1135
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Autor:
Minoglou, Kyriaki, Karafolas, Nikos, Cugny, Bruno, Dussarrat, Pierre, Deschamps, Guillaume, Dehnavi, Sahar, Theodore, Bertrand, Coppens, Dorothée
Publikováno v:
Proceedings of SPIE; September 2023, Vol. 12777 Issue: 1 p127775A-127775A-12, 12649738p