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Volume conjecture : ウィキペディア英語版
Volume conjecture
In the branch of mathematics called knot theory, the volume conjecture is the following open problem that relates quantum invariants of knots to the hyperbolic geometry of knot complements.
Let ''O'' denote the unknot. For any knot ''K'' let \langle K\rangle_N be Kashaev's invariant of K; this invariant coincides with the following evaluation of the N-colored Jones polynomial J_(q) of K:
: \frac.|}}
Then the volume conjecture states that
:
where vol(''K'') denotes the hyperbolic volume of the complement of ''K'' in the 3-sphere.
== Kashaev's Observation ==

observed that the asymptotic behavior of a certain state sum of knots gives the hyperbolic volume \operatorname(K) of the complement of knots K and showed that it is true for the knots 4_1, 5_2 and 6_1. He conjectured that for the general hyperbolic knots the formula (2) would hold. His invariant for a knot K is based on the theory of quantum dilogarithms at the N-th root of unity, q=\exp.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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