1206.3858 (S. J. Cox et al.)

Are large two-dimensional clusters of perimeter-minimizing bubbles of
equal-area hexagonal or circular?    [PDF]

S. J. Cox, F. Morgan, F. Graner

A computer study of clusters of up to 200,000 equal-area bubbles shows for the first time that rounding conjectured optimal hexagonal planar soap bubble clusters reduces perimeter.

View original: http://arxiv.org/abs/1206.3858