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4 votes
1 answer
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Upper bound on the number of binary matrices with small rank

I'm looking for the tightest upper bound on the number of different binary matrices $A \in {\{-1,1\}^{m \times n}}$ for which $\mathrm{rank}(A)\leq r$. I'm interested in the regime $1 \ll r \ll m \...
Daniel Soudry's user avatar
1 vote
1 answer
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Probability for high mutual coherence on all subsets of a Gaussian vector set

We examine as set of independent normal vectors: $$ \forall i \in [N]\triangleq \{1,\dots,N\}:\,\mathbf{x}_{i}\sim\mathcal{N}\left(0,\mathbf{I}_{d}\right)$$ For any $\epsilon>0$ and $K\leq N$, we ...
Daniel Soudry's user avatar