Matrix representations of the twisted virtual braid group and its extensions

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Hauptverfasser: Nasser, Mohamad N., Keshari, Vaibhav, Prabhakar, Madeti
Format: Preprint
Veröffentlicht: 2025
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author Nasser, Mohamad N.
Keshari, Vaibhav
Prabhakar, Madeti
author_facet Nasser, Mohamad N.
Keshari, Vaibhav
Prabhakar, Madeti
contents This paper classifies complex local representations of the twisted virtual braid group, $\mathrm{TVB}_2$, into $\mathrm{GL}_3(\mathbb{C})$. It shows that such representations fall into eight types, all of which are unfaithful and reducible to degree $2 \times 2$. Further reducibility to degree 1 is analyzed for specific types. The paper also examines complex homogeneous local representations of $\mathrm{TVB}_n$ into $\mathrm{GL}_{n+1}(\mathbb{C})$ for $n \geq 3$, identifying seven unfaithful types. Additionally, complex local representations of the singular twisted virtual braid group, $\mathrm{STVB}_2$, into $M_3(\mathbb{C})$ are classified into thirteen unfaithful types. Finally, the paper demonstrates that not all complex local extensions of $\mathrm{TVB}_2$ representations to $\mathrm{STVB}_2$ conform to a $Φ$-type extension.
format Preprint
id arxiv_https___arxiv_org_abs_2506_03806
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Matrix representations of the twisted virtual braid group and its extensions
Nasser, Mohamad N.
Keshari, Vaibhav
Prabhakar, Madeti
Representation Theory
Primary: 20F36, 20F38, Secondary: 57K12
This paper classifies complex local representations of the twisted virtual braid group, $\mathrm{TVB}_2$, into $\mathrm{GL}_3(\mathbb{C})$. It shows that such representations fall into eight types, all of which are unfaithful and reducible to degree $2 \times 2$. Further reducibility to degree 1 is analyzed for specific types. The paper also examines complex homogeneous local representations of $\mathrm{TVB}_n$ into $\mathrm{GL}_{n+1}(\mathbb{C})$ for $n \geq 3$, identifying seven unfaithful types. Additionally, complex local representations of the singular twisted virtual braid group, $\mathrm{STVB}_2$, into $M_3(\mathbb{C})$ are classified into thirteen unfaithful types. Finally, the paper demonstrates that not all complex local extensions of $\mathrm{TVB}_2$ representations to $\mathrm{STVB}_2$ conform to a $Φ$-type extension.
title Matrix representations of the twisted virtual braid group and its extensions
topic Representation Theory
Primary: 20F36, 20F38, Secondary: 57K12
url https://arxiv.org/abs/2506.03806