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Math student, interested in mathematical computing, fluid dynamic, computer graphics.


Nov
23
answered Charge distribution on an arbitrarily shaped conductor
Nov
19
asked Tensor product of function space and vector space
Nov
7
comment Is rectangle manifold with boundary
It depends on what is your definition of manifold. Standard notion of manifold is smooth manifold, so every transition map is diffeomorphism. But you can define only continuous manifold, there you require from transition map to be only homeomorphism.
Nov
7
comment Is rectangle manifold with boundary
They are homeomorphic but not diffeomorphic.
Sep
24
awarded  Autobiographer
Jul
2
awarded  Curious
Jun
25
comment Is a Lie group connected?
For example $GL(n)$ is not connected, it has two components.
Jun
22
answered Prove $A$ is diagonalizable while $A^{2}=kA$
Jun
19
comment The relation between the integration on concentric hypercubes
I still do not understand, side of what is interval?
Jun
19
comment The relation between the integration on concentric hypercubes
May I ask what is cubic and concentric cubic? I know only cubic polynomial. Are they related?
Jun
13
accepted Sets that are equal to closure of its interior
Jun
13
asked Sets that are equal to closure of its interior
Jun
11
comment How is math used in computer graphics?
Here is another survey on physical based simulations cs.rutgers.edu/~nealen/research/pbdm.pdf
Jun
7
comment Normal Compact Operator: not diagonalizable!
sorry I missed the word 'real' in original question
Jun
7
comment Normal Compact Operator: not diagonalizable!
The matrix is not diagonalizable only if you restrict yourself only to real numbers. You can diagonalize it with complex numbers.
Jun
4
comment Numerical computation of the logarithm of the generalized incomplete Beta function
There is boost implementation of incomplete beta function boost.org/doc/libs/1_55_0/libs/math/doc/html/math_toolkit/…
Jun
3
revised Does a laser bouncing off two rotating mirrors produce a Rose curve or Lissajous curve?
deleted 5 characters in body
Jun
3
revised Does a laser bouncing off two rotating mirrors produce a Rose curve or Lissajous curve?
added 68 characters in body
Jun
3
answered Does a laser bouncing off two rotating mirrors produce a Rose curve or Lissajous curve?
Jun
2
comment rank-one approximation for minimization of Frobenius norm out of kronecker products of unknown matrices
The hint is wierd. $vec(X\otimes Y)$ has dimension $pq\times pq$ but $vec(X)\otimes vec(Y)$ has dimension $ p^2 q^2 \times 1$. Matrix $P$ cannot be permutation matrix, because they are square matrices.