Abstract
In this paper, we first introduce the notion of \(\pi\)-pivotal elements in a weak Turaev \(\pi\)-coalgebra \(H\) and show that the representation category of \(H\) is a pivotal crossed category if and only if there is a \(\pi\)-pivotal element in \(H\). Also we discuss the relation between \(\pi\)-pivotal elements and \(\pi\)-ribbon elements of a quasitriangular weak Turaev \(\pi\)-coalgebra. Finally, we obtain a generalized Deligne Type theorem.
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Acknowledgments
The authors would like to express their deep gratitude to the anonymous referee for a careful reading and valuable suggestions.
Funding
The work of X. H. Zhang was supported by the National Natural Science Foundation of China (Nos. 11871301 and 12271292) and the Taishan Scholar Project of Shandong Province (No. tsqn202103060). The work of S. J. Guo was supported by the NSF of China (No. 12161013). The work of S. X. Wang was supported by the Anhui Provincial Natural Science Foundation (No. 1908085MA03), the Key University Science Research Project of Anhui Province (No. KJ2020A0711), and the NSF of Chuzhou University (No. 2021qd08).
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Zhang, X., Guo, S. & Wang, S. Pivotal Weak Turaev \(\pi\)-Coalgebras. Math Notes 112, 797–815 (2022). https://doi.org/10.1134/S0001434622110153
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DOI: https://doi.org/10.1134/S0001434622110153