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xiaohuamao

Apparently, this user prefers to keep an air of mystery about them.

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  • Member for 6 years, 7 months
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Top posts (30) All Questions Answers | Votes Newest

6 Local gauge invariance of field's homotopy class? Every map $S^2\rightarrow \mathrm{group } G$ is homotopic to a constant map? Nov 11 '13
4 Begin with one cell, which can die, do nothing, transform to 2 or 3 cells, with probability 1/4 respectively. How's the probability of extinction? Jul 20 '13
3 How to analyse the smallest eigenvalue of this linear ODE? Jul 14 '19
3 What's the calculation formula of topological number for mappings of $\pi_{3}(S^2)=\mathbb{Z}$? Jun 16 '14
3 Is 2nd-order ODE with quadratic coefficients solvable? Jan 21 '19
2 What's the proper boundary condition for this ODE? Jan 13 '18
2 Is integral transform an expansion over a self-ajoint operator's eigenfunctions? Mar 29 '18
2 Weird eigensystem of ODE with regular singularity Dec 25 '18
2 Constructing an odd trigonometric function with no 1st-order term in Taylor expansion Feb 8 '19
2 Matrix anticommuting with four or five Dirac $\Gamma$-matrices Mar 25 '19
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