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anisotropy 1asymptotic distribution 1chi-bar-square 1isotropy 1likelihood ratio test 1semidefinite rank constraints 1

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math.ST2026

Nonstandard likelihood-ratio limits under semidefinite rank constraints

Didier Concordet

The paper analyzes likelihood‑ratio tests for hypotheses that a positive‑semidefinite matrix has a bounded rank, deriving nonstandard asymptotic limits that involve chi‑bar‑square…