Lecture 26

We did sections 20.8-20.9, and 21.1-21.8 (good parts only; no details of proofs).

Pictures of tilings:

• tilings in real life
• regular tilings
• aperiodic tiling pictures
• Penrose tiling showing 5-fold symmetry
• quasicrystals

Announcements

• check for final exam conflicts
• be alert for room assignments for final exam, to be posted soon
• ICES forms and wrap up next Tuesday