3-dimensional sundials
3-fold divisorial extremal neighborhoods over cE7 and cE6 Compound DuVal singularities
3-fold log flips according to V.V.Shokurov
3-fold symmetric products of curves as hyperbolic hypersurfaces in $\Proj^4$
3-nets realizing a group in a projective plane
3-nilpotent obstructions to pi_1 sections for P^1_Q - {0,1,infty}
3D shape matching and Teichmüller spaces of pointed Riemann surfaces