User klein - MathOverflowmost recent 30 from http://mathoverflow.net2013-05-19T12:17:52Zhttp://mathoverflow.net/feeds/user/8671http://www.creativecommons.org/licenses/by-nc/2.5/rdfhttp://mathoverflow.net/questions/37988/submersion-between-s2n1-and-mathbbcpn Submersion between $S^{2n+1}$ and $\mathbb{C}P^n$Klein 2010-09-07T16:30:34Z2010-09-07T16:30:34Z
<p>How construct a submersion $\Lambda:S^{2n+1}\to\mathbb{C}P^n$ such that for every $x\in\mathbb{C}P^n$ ,
the fiber $\Lambda^{−1}(x)$ is diffeomorphic to the circle $S^1$ ?</p>
http://mathoverflow.net/questions/36891/differential-forms-pdes-and-lie-cartanDifferential forms, PDE's and Élie CartanKlein 2010-08-27T15:52:10Z2010-08-28T04:51:54Z
<p>Hello everybody, I would like to know about the work of Élie Cartan of PDE's that relate to the theory of foliations and differential forms.</p>
<p>I am interested in the subject and will be happy to receive basic references on the subject (articles) as well as explanations on the importance of the subject in mathematics today.</p>
http://mathoverflow.net/questions/127391/an-example-of-a-differentiable-manifold-which-is-of-class-ck-but-not-of-clasComment by Klein Klein 2013-04-12T18:19:43Z2013-04-12T18:19:43Z<a href="http://math.stackexchange.com/questions/358760/an-example-of-a-differentiable-manifold-class-ck-but-not-class-ck-1" rel="nofollow" title="an example of a differentiable manifold class ck but not class ck 1">math.stackexchange.com/questions/358760/…</a>
http://mathoverflow.net/questions/127391/an-example-of-a-differentiable-manifold-which-is-of-class-ck-but-not-of-clasComment by Klein Klein 2013-04-12T18:15:31Z2013-04-12T18:15:31ZAs the noted author of the comment, the comment was not very enlightening for me, I am looking for a concrete example.http://mathoverflow.net/questions/118753/examples-in-ergodic-theory-and-topological-dynamicsComment by Klein Klein 2013-01-12T21:08:02Z2013-01-12T21:08:02ZGood question. I'd like to meet some interesting examples too. I believe that Juan does not necessarily want a list of examples, but examples of knowing one's personal preference.http://mathoverflow.net/questions/36891/differential-forms-pdes-and-lie-cartan/36931#36931Comment by Klein Klein 2010-08-28T01:48:01Z2010-08-28T01:48:01Zthanks Palais and Wong!
http://mathoverflow.net/questions/36891/differential-forms-pdes-and-lie-cartanComment by Klein Klein 2010-08-27T18:43:34Z2010-08-27T18:43:34ZThanks Wong, Yang and Figueroa! It is a good start for my
bibliographic research