Point Group, Symmetry Group, Lattice

coxeter group

Amazing depth and diversity of math. Some topics, u haven't checked for decades, suddenly popped up. And today with the fairly comprehensive wikipedia, u read them for days. Symmetry, space groups, linear group, reflection group, isometry group, group generators.

• Space group
• Reflection group
• Coxeter group
• General linear group
• Classical group
• Point group

• Bravais lattice

• Einstein problem

groups

• Orthogonal group

• Isometry
• Isometry group
• Euclidean group
• Space group
• Symmetry group
• Group action

• Lattice (group)

sphere packing

• Sphere packing
• Hilbert's eighteenth problem
• Kepler conjecture