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visits | member for | 3 years, 6 months |
seen | 32 mins ago | |
stats | profile views | 3,222 |
Jun 17 |
awarded | Necromancer |
Jun 17 |
revised |
The fibers of the momentum map for the $SO(n+1)$ symmetry of the geodesic flow on $S^n$
added 37 characters in body |
Jun 17 |
revised |
The fibers of the momentum map for the $SO(n+1)$ symmetry of the geodesic flow on $S^n$
added 235 characters in body; added 2 characters in body |
Jun 17 |
revised |
The fibers of the momentum map for the $SO(n+1)$ symmetry of the geodesic flow on $S^n$
added 69 characters in body; edited tags |
Jun 17 |
revised |
The fibers of the momentum map for the $SO(n+1)$ symmetry of the geodesic flow on $S^n$
added 1 characters in body |
Jun 17 |
revised |
The fibers of the momentum map for the $SO(n+1)$ symmetry of the geodesic flow on $S^n$
added 18 characters in body; added 1 characters in body |
Jun 17 |
asked | The fibers of the momentum map for the $SO(n+1)$ symmetry of the geodesic flow on $S^n$ |
Jun 9 |
comment |
Depressed graduate student.
math.uh.edu/~tomforde/Articles/Emotional-Perils.pdf |
Jun 9 |
accepted | what are the killing vector fields on a triaxial ellipsoid? |
Jun 9 |
comment |
what are the killing vector fields on a triaxial ellipsoid?
I have received two answers that are equally very interesting. My question was not restrictive on the kind of proof. Not being possible multiple choices, I have accepted the first posted answer. |
Jun 8 |
comment |
what are the killing vector fields on a triaxial ellipsoid?
Dear Robert Bryant, I like this argument very much: going along the lines of your sketch, I should have the occasion to give a proof in closed-form. Your and Algol's answers are both very exaustive. Thanks you. |
Jun 8 |
comment |
what are the killing vector fields on a triaxial ellipsoid?
Dear Algol Thanks a lot for the proper reference, and for the explanation. |
Jun 8 |
asked | what are the killing vector fields on a triaxial ellipsoid? |
Jun 3 |
comment |
Schwartz space inequality
@Feynmaniac: About an approach which doesn't separate the two cases $|x|\ge 2|y|$ and $|x|\le 2|y|$: couldn't it be possible the following proof? 1)use the triangle inequality $|x|\le |y|+|x-y|$, 2)apply the binomial formula to $(|y|+|x-y|)^l$, 3)apply the hypothesis on $g$, and finally $|y|^k\le(1+|y|)^l$, for any $y\in\mathbb{R}$ and $0\le k\le l$. |
Jun 2 |
comment |
Algebraic structures of greater cardinality than the continuum?
Dear Qiaochu Yuan: even if not an exact duplicate, the OP could read the answers to the similar question mathoverflow.net/questions/32370/…. Was you refering to it? |
Jun 1 |
comment |
Schwartz space inequality
Should not it be Schwartz? |
Jun 1 |
revised |
Schwartz space inequality
edited tags |
Jun 1 |
revised |
Number of spanning forests in a graph
edited tags |
May 31 |
comment |
Car movement - differential geometry interpretation.
Dear Beni Bogosel you could give a look to "Nonholonomic Mechanics and Control" by A.Bloch. |
May 31 |
comment |
Car movement - differential geometry interpretation.
Dear jkersch: it could be helpful for someone starting to learn analysis on manifolds, to see the product formula (cf. for example Abraham, Marsden, Ratiu MTA) as justification of the interpretation you give of the Lie bracket of vector fields. I believe that this interpretation is not always presented in introductory texts to smooth manifolds. |