OP-00475 Open Néel order in the square-lattice spin-one-half antiferromagnet MP · AIM Open Applied Problems · long-range order · quantum Heisenberg antiferromagnets
OP-00516 Open An overlap-free edge unfolding for every convex polyhedron MG · AIM Open Applied Problems · convex polyhedra · edge unfoldings · nets
OP-00844 Open Uniqueness of a hemispheric saddle profile on a magnetic sphere AP · AIM Open Applied Problems · micromagnetics · spherical ferromagnets
OP-00954 Open Weak nets of linear size for axis-parallel rectangles CO · axis-parallel rectangles · discrepancy theory · discrete geometry · weak epsilon-nets