We present new examples of closed smooth locally CAT(0) manifolds which do not support Riemannian metrics of nonpositive sectional curvature.
Links:
[1] http://www.mpim-bonn.mpg.de/taxonomy/term/39
[2] http://www.mpim-bonn.mpg.de/node/3444
[3] http://www.mpim-bonn.mpg.de/node/3050