Distance of a standard Gaussian vector to a fixed subspace: if $\operatorname{rank}B+d\le N$ then $\mathbb P\{\operatorname{dist}(g,\operatorname{col}B)^2\le u\}\le (eu/d)^{d/2}$

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Distance of a standard Gaussian vector to a fixed subspace: if $\operatorname{rank}B+d\le N$ then $\mathbb P\{\operatorname{dist}(g,\operatorname{col}B)^2\le u\}\le (eu/d)^{d/2}$ · Prove2Me