🔬 Discovery

Optimal sphere packing in dimensions 8 and 24

Empaquetamiento óptimo de esferas en dimensiones 8 y 24

Date
2016 · confidence high
Place
Berlin (Humboldt University), Germany
Credited to
Maryna Viazovska (dimension 8); with Cohn, Kumar, Miller and Radchenko (dimension 24)
People
👤 Abhinav Kumar1984–👤 Danylo Radchenko👤 Henry Cohn👤 Maryna Viazovska1984–👤 Stephen D. Miller
Field
Knowledge & symbols

What was discovered

The E8 lattice and the Leech lattice are the densest packings of their dimensions, proved using an auxiliary function built from modular forms. A 23-page proof, compared with Hales's 300 pages in dimension 3.

Viazovska received the Fields Medal in 2022, the second woman to do so.

What it led to

  • modular forms in optimisation
  • cryptographic codes and lattices
  • the universality of E8 and Leech as energy minimisers (2019)

Built on

  • Kepler conjecture (Hales)
  • Cohn and Elkies's linear programming bounds (2003)
  • Leech lattice (1967)

Made possible

  • design of error-correcting codes

📄 Original publication

The sphere packing problem in dimension $8$Maryna Viazovska · Annals of Mathematics · 2017

Links