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JOURNALS // Sibirskie Èlektronnye Matematicheskie Izvestiya [Siberian Electronic Mathematical Reports] // Archive

Sib. Èlektron. Mat. Izv., 2022 Volume 19, Issue 2, Pages 698–707 (Mi semr1532)

Geometry and topology

Homologically trivial part of the Turaev – Viro invariant order $7$

F. G. Korablevab

a Chelyabinsk State University, 192, Br. Kashirinykh str., Chelyabinsk, 454000, Russia
b N.N. Krasovsky Institute of Mathematics and Meckhanics, 4, S. Kovalevskoy str., Ekaterinburg, 620990, Russia

Abstract: Homologically trivial part of any Turaev – Viro invariant odd order $r$ is a Turaev – Viro type invariant order $\frac{r + 1}{2}$. In this paper we find an explicit formulas for this Turaev – Viro type invariant, corresponding to the invariant order $r = 7$. Our formulas express $6j$-symbols and color weights in the term of $\gamma$, where $\gamma$ is a root of the polynomial $\mathcal{T}(x) = x^3 - 2x^2 - x + 1$.

Keywords: Turaev – Viro invariant, quantum number, $6j$-symbol.

UDC: 515.162.3

MSC: 57K31

Received July 15, 2022, published September 6, 2022

DOI: 10.33048/semi.2022.19.058



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© Steklov Math. Inst. of RAS, 2025