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Symmetry of Reidemeister torsion on $SU_2$-representation spaces of knots

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 نشر من قبل Takahiro Kitayama
 تاريخ النشر 2009
  مجال البحث
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 تأليف Takahiro Kitayama




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We study two sorts of actions on the space of conjugacy classes of irreducible $SU_2$-representations of a knot group. One of them is an involution which comes from the algebraic structure of $SU_2$ and the other is the action by the outer automorphism group of the knot group. In particular, we consider them on an 1-dimensional smooth part of the space, which is canonically oriented and metrized via a Reidemeister torsion volume form. As an application we show that the Reidemeister torsion function on the 1-dimensional subspace has symmetry about the metrization.

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