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Anadim
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question
7
How much can a diagonal matrix change the eigenvalues of a symmetric matrix?
Sep 21, 2011
question
6
The difference of two sums of unit fractions
Oct 2, 2010
question
6
Number of n-th roots of unity over finite fields [closed]
Mar 13, 2011
question
4
The determinant of the hadamard product of two matrices
May 30, 2011
question
3
Feasibility of a matrix equation
Mar 14, 2011
question
3
Cases of almost-linear time solvable linear systems
Oct 21, 2011
answer
2
Convex optimization over vector space of varying dimension
Oct 11, 2010
answer
2
How to find the $\pm 1$ vector that is closest to a given vector $(r_1, \dots, r_l)$? Is it in NP? What algorithms are available?
Apr 16, 2011
answer
2
Minimum Mean Square Error (MMSE) and Mutual Information (I)
May 29, 2011
question
1
Nonunique low-rank matrix completion from a few entries
Nov 1, 2010