A note on the article ‘Inference for multivariate normal mixtures’ by J. Chen and X. Tan

The current note discusses the consistency proof for the penalized maximum likelihood estimator of a Gaussian mixture from the paper ‘Inference for multivariate normal mixtures’ by J. Chen and X. Tan. A soft spot in that proof is identified and a rigorous alternative proof based on a uniform law of iterated logarithm is given.