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By NTZung, on June 30th, 2013%
Vườn nhà, tối ngày 28/06/2013, nhân dịp kết thúc năm học
Kỷ niệm một hôm nướng thịt dưới trời mưa :)
Có mấy khách quí đến chơi với đội quân hôm đó: GS Lê TQ Thắng từ Mỹ sang, GS Đỗ Đức Thái từ VN sang, và hai vợ chồng cùng là nhà . . . → Read More: Đội quân thích đánh chén
By Trương Đình Toe, on June 28th, 2013%
CẬU TÔI
. . . → Read More: CẬU TÔI
By NTZung, on June 22nd, 2013%
I’m writing down here the ideas for proving that smooth nondegenerate integrable dynamical systems are smoothly linearizable. The analytic case can be proved using analytic torus actions (my paper about that will appear in Ergodic Th Dyn Sys). I think the smooth case is also true, but the proof is much more complicated than . . . → Read More: Linearization of smooth integrable systems
By NTZung, on June 18th, 2013%
Je suis d’accord avec le communiqué suivant de SupAutonome:
Communiqué SupAutonome du 18 juin 2013 :
« Nouvelle attaque intolérable contre nos statuts »
Un amendement de dernière minute au projet de loi sur l’Enseignement supérieur et la recherche, présenté dans la précipitation et sans réelle concertation par . . . → Read More: Nouvelle attaque contre les enseignants-chercheurs
By NTZung, on June 16th, 2013%
Take a singular foliation say of dimension k.
Locally at each point there exists $k$ vector fields X1, …, Xk which are tangent to the foliation and which are linearly independent almost everywhere (we will only consider foliations which satisfy this property)
The wedge product L = X1…Xk is a Nambu structure tangent to . . . → Read More: Anti-canonical bundle of singular foliations
By NTZung, on June 13th, 2013%
This is the topic that I want to talk about in the conference in honor of Alan Weinstein’s 70th birthday in EPFL (Lausanne) in July. This post is the place in keep the preparation for my talk.
A work of mine on the linearization of proper Lie groupoids was directly influenced by Alan (it . . . → Read More: Linearization and stability of singular foliations
By NTZung, on June 13th, 2013%
Cuộc đời cách mạng thật là sang :D
(Ngồi ngoài vườn buổi sáng)
By NTZung, on June 11th, 2013%
Me giving the last lecture of my minicourse, Friday 07/June/2013, GESTA
(http://www.math.univ-toulouse.fr/top-geom-conf-2013/common/Semaine2/index.php?lang=en)
The “tail of the cat”, which was drawn 3 times there on the blackboard, was an example (of an exotic symplectic R^2n) that intrigued many people :D
Thanks to Truong Hong Minh for the picture, that he shot using his . . . → Read More: A picture from GESTA 2013
By NTZung, on June 11th, 2013%
(thừa giấy vẽ voi)
Báo chí VN vừa được phép công bố các con số về bỏ phiếu tín nhiệm của quốc hội với gần 50 vị quan chức chính phủ. Trong danh sách này không có các vị quan chức của ĐCS: hiện ở VN, ĐCS là “lực lượng lãnh đạo tối cao” . . . → Read More: Chỉ số tín nhiệm quan chức
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