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Results tagged with inequalities
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user 113506
for questions involving inequalities, upper and lower bounds.
3
votes
Accepted
A conjecture about the submatrix of orthogonal matrix
Neither conjecture is true in general, as seen from the following counterexample for $n = 4$, $k = 2$, and
\begin{align}
U = \begin{pmatrix}
0 & 1 & 0 & 0 \\
1 & 0 & 0 & 0 \\
0 & 0 & \frac{1}{\sqrt{2 …
- 651