Solenoids are inverse limit spaces over regular covering maps of closed
manifolds. M.C. McCord has shown that solenoids are topologically homogeneous
and that they are principal bundles with a profinite structure group. We show
that if a solenoid is bihomogeneous, then its structure group contains an open
abelian subgroup. This leads to new examples of homogeneous continua that are
not bihomogeneous.Comment: Published by Algebraic and Geometric Topology at
http://www.maths.warwick.ac.uk/agt/AGTVol2/agt-2-1.abs.htm