Algebras of singular integral operators on Nakano spaces with   Khvedelidze weights over Carleson curves with logarithmic whirl points
  We establish a Fredholm criterion for an arbitrary operator in the Banach algebra of singular integral operators with piecewise continuous coefficients on Nakano spaces (generalized Lebesgue spaces with variable exponent) with Khvedelidze weights over Carleson curves with logarithmic whirl points. 
Alexei Yu. Karlovich