Аннотация:
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 $\mathcal{T}(x) = x^3 - 2x^2 - x + 1$.