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Results tagged with quadratic-form
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user 13586
A quadratic form is a homogeneous polynomial of order two.
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Covariance of a linear and quadratic form of a multivariate normal
Does anyone know of an explicit matrix expression for the covariance of a linear and quadratic form? That is,
$\mathrm{Cov}[\mathbf{a' y},\mathbf{y' Hy}]$
where $\mathbf{y}\sim \mathcal N(\boldsymbol …
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