This correspondence disproves the main results in the paper Design of Asymmetric Shift Operators for Efficient Decentralized Subspace Projection by S. Mollaebrahim and B. Beferull-Lozano. Counterexamples and counterproofs are provided when applicable. When those problems can be amended, a correction is suggested. However, in most cases, no correction may be possible since the problem addressed by the aforementioned paper is for the most part intractable.
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