user17150

124 reputation

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visits	member for	1 year, 7 months
	seen	May 28 '12 at 20:23
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	124 reputation	bio	website		visits	member for	1 year, 7 months
4 badges		location			seen	May 28 '12 at 20:23

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May 28	comment	Hausdorff Dimension and Hausdorff measure Thanks Leonid. I still confused on how to calculate the Hausdorff measure of the general cantor set, since it needs to take infimum over all coverings with diameter $\epsilon$ and then let it goes to zero. Why covered by the intervals is enough?
May 28	asked	Hausdorff Dimension and Hausdorff measure
Apr 14	asked	Given Poincare Polynomial find the manifold.
Apr 13	comment	Orientation on $\mathbb{CP}^2$ Thanks, that's really help.
Apr 13	accepted	Orientation on $\mathbb{CP}^2$
Apr 13	awarded	Commentator
Apr 13	comment	Orientation on $\mathbb{CP}^2$ So the idendity map between $\mathbb{CP}^2$ and $\overline{\mathbb{CP}}^2$ can not be considered as a homeomorphism between these two 'oriented' manifolds. Correct?
Apr 13	comment	Orientation on $\mathbb{CP}^2$ But there is no orientation reversing map from $\mathbb{CP}^2$ to itself. which implies the above two are not homeomorphic! I am crazy.... There must be some stupid mistake I made in my argument, but i can't find it.
Apr 13	comment	Orientation on $\mathbb{CP}^2$ Thanks, But whether $\mathbb{CP}^2$ and $\overline{\mathbb{CP}}^2$ homeomorphic to each other?
Apr 13	asked	Orientation on $\mathbb{CP}^2$
Nov 15	accepted	Proof of Bochner formula/ Weitzenböck formula in a non-normal frame
Nov 15	comment	Proof of Bochner formula/ Weitzenböck formula in a non-normal frame It's ON field in a neighborhood of a fixed point say $p_0$.
Nov 15	comment	Proof of Bochner formula/ Weitzenböck formula in a non-normal frame The term $\nabla f \langle \nabla_{e_{\alpha}}\nabla f, e_{\alpha}\rangle$ means the vector $\nabla f$ acts on the function $\langle \nabla_{e_{\alpha}}\nabla f, e_{\alpha} \rangle$ thing, so it's a scalar.
Nov 14	revised	Proof of Bochner formula/ Weitzenböck formula in a non-normal frame added 1 characters in body; edited title
Nov 14	asked	Proof of Bochner formula/ Weitzenböck formula in a non-normal frame
Nov 14	accepted	Definitions of Hessian in Riemannian Geometry
Nov 11	asked	Definitions of Hessian in Riemannian Geometry
Nov 7	comment	Deformation of the Kähler structure on $CP^n$ will the curvatures, say bi-sectional curvature can be calculated explicitly? Any reference to this calculation if available? Thanks
Nov 7	asked	Deformation of the Kähler structure on $CP^n$
Oct 21	comment	Covariant derivative of composition of two tensors I see, thank you Henning!