SPECIAL GEOMETRY OF MATERIALS SEMINAR | |

Topic: | What does the Modular Group Have to do With Materials? |

Speaker: | Robert MacPherson |

Affiliation: | Hermann Weyl Professor, Institute for Advanced Study |

Date: | Friday, November 20 |

Time/Room: | 4:00pm - 5:00pm/S-101 |

Simple cell decompositions of surfaces are in one to one correspondence with certain conjugacy classes of subgroups of the modular group. Polycrystalline structures in 2 dimensional materials give rise to statistical simple cell decompositions of the plane, and therefore to statistical subgroups of the modular group. Can the structural properties of the modular group help to illuminate the properties of polycrystalline materials?