# The complex volumes of twist knots via colored jones polynomials

Jinseok Cho, Jun Murakami

研究成果: Article

7 引用 (Scopus)

### 抄録

For a hyperbolic knot, an ideal triangulation of the knot complement corresponding to the colored Jones polynomial was introduced by Thurston. Considering this triangulation of a twist knot, we find a function which gives the hyperbolicity equations and the complex volume of the knot complement, using Zickert's theory of the extended Bloch group and the complex volume. We also consider a formal approximation of the colored Jones polynomial. Following Ohnuki's theory of 2-bridge knots, we define another function which comes from the approximation. We show that this function is essentially the same as the previous function, and therefore it also gives the same hyperbolicity equations and the complex volume. Finally we compare this result with our previous one which dealt with Yokota theory, and, as an application to Yokota theory, present a refined formula of the complex volumes for any twist knots.

元の言語 English 1401-1421 21 Journal of Knot Theory and its Ramifications 19 11 https://doi.org/10.1142/S0218216510008443 Published - 2010 11

### Fingerprint

Colored Jones Polynomial
Twist
Knot
Hyperbolicity
Triangulation
Complement
2-bridge Knot
Hyperbolic Knot
Approximation

### ASJC Scopus subject areas

• Algebra and Number Theory

### これを引用

：: Journal of Knot Theory and its Ramifications, 巻 19, 番号 11, 11.2010, p. 1401-1421.

研究成果: Article

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AU - Murakami, Jun

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