We study Pfister neighbors and their characterization over fields of characteristic 2, where we include the case of singular forms. We give a somewhat simplified proof of a theorem of Fitzgerald which ...

Research in neuroscience has seen a recent trend toward the extension of receptive field (RF) estimation techniques and theoretical principles from linear to non-linear models. This development has ...

Positive definite quadratic forms in normal variates, which do not necessarily reduce to a multiple of a χ2 variate, arise quite naturally in estimation and hypothesis testing problems related to ...