The densest lattice in twenty-four dimensions.
The densest packing of 12 congruent circles in a circle.
The densest packing of 13 congruent circles in a circle.
The Densest Packing of Equal Circles into a Parallel Strip.
The Disk-Packing Constant
Tile-transitive partial tilings of the plane.
Translative packing of a convex body by sequences of its homothetic copies
Every sequence of positive or negative homothetic copies of a planar convex body whose total area does not exceed times the area of can be translatively packed in .
Translative packing of a square with sequences of squares
Let S be a square and let S' be a square of unit area with a diagonal parallel to a side of S. Any (finite or infinite) sequence of homothetic copies of S whose total area does not exceed 4/9 can be packed translatively into S'.