• Theta divisors of stable vector bundles may be nonreduced 

      Hitching, George Harry; Pauly, Christian (Geometriae Dedicata;, Journal article; Peer reviewed, 2014-05-28)
      A generic strictly semistable bundle of degree zero over a curve X has a reducible theta divisor, given by the sum of the theta divisors of the stable summands of the associated graded bundle. The converse is not true: ...