arXiv · 2208.00484
We show that it is co-NP-hard to check whether a given semigroup identity holds in the twisted Brauer monoid $\mathcal{B}^\tau_n$ with $n\ge5$.
N. V. Kitov, M. V. Volkov. 2022-07-31. Identities in twisted Brauer monoids. https://arxiv.org/abs/2208.00484
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