Skew-symmetric operators and reflexivity
  In contrast to the subspaces of all $C$-symmetric operators, we show that the subspaces of all skew-C symmetric operators are reflexive and even hyperreflexive with the constant $\kappa(\C^s)\leqslant 3$. 
Chafiq Benhida, Kamila Kli\'s-Garlicka, Marek Ptak
math.FA math.OA