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2
votes
0answers
45 views
How to apply periodic boundary conditions to a Raviart-Thomas finite element space in Fenics?
I'm trying to use periodic boundary conditions within a Raviart-Thomas finite element space in Fenics (dolfin 1.2.0) in a Ubuntu 12.04 (amd64) machine (with python 2.7). If other FE space is used, ...
3
votes
1answer
76 views
Algorithm for dealing with medium-size non-convex QCQP
I have the following problem:
$$\displaystyle\min_{x}x^HAx$$
subject to constraints:
$$x^HBx = 1$$
$$x^HC_ix = 0$$ for $i$ = 0,1,...,203.
$x$ is complex and 205x1.
$A$ and $B$ are complex 205x205 ...
2
votes
2answers
99 views
efficient mean of solving constrained OLS problems?
I was wondering whether there was a efficient procedure for solving
constrained quadratic approximations of the form:
$$\underset{k\in \mathbb{R}}{\min}\;||x_i-kx_0||_2$$
for fixed values of ...
