### Seminars for Pure Mathematics

**Fall 2018**

Oct 9 |

Ettore Aldrovandi (FSU) |

Homotopy theoretic aspects of central extensions |

Topology and Geometry Seminar |

Time: 3:35 |

Location: 201 |

The classification of central extensions of a group $G$ by a (necessarily abelian) group $A$ is very well understood from both the Algebra and Geometry viewpoints. Indeed, one of the mos... More |

Sep 25 |

Alex White (FSU) |

Central Strips of Sibling Leaves in Laminations of the Unit Disk |

Topology and Geometry Seminar |

Time: 3:35 |

Location: 201 |

Quadratic laminations of the unit disk were introduced by Thurston as a vehicle for understanding the Julia sets of quadratic polynomials and the parameter space of quadratic polynomials. The Central ... More |

Sep 20 |

Tyler Foster (Florida State University) |

The work of Katz, Rabinoff, and Zureick-Brown on rational point counts in algebraic curves |

Algebra |

Time: 3:35 |

Location: LOV104 |

I plan to talk about relatively recent work of E. Katz, J. Rabinoff, and D. Zureick-Brown. These three authors established a uniform bound on the number of rational points in smooth projective algebra... More |

Sep 18 |

Alex White (FSU) |

Central Strips of Sibling Leaves in Laminations of the Unit Disk |

Topology and Geometry Seminar |

Time: 3:35 |

Location: 201 |

Quadratic laminations of the unit disk were introduced by Thurston as a vehicle for understanding the Julia sets of quadratic polynomials and the parameter space of quadratic polynomials. The Central ... More |

Sep 17 |

Analysis & PDE |

Time: 2:30-3:30 |

Location: 104 LOV |

Sep 17 |

Alexander Reznikov |

Sparce domination of singular integrals |

Analysis & PDE |

Time: 2:30-3:30 |

Location: 104 LOV |

We will make the first step towards understanding the recent article on Matrix Weighted Estimates for singular integral operator. We will begin by presenting the classical sparc... More |

Sep 13 |

Grayson Jorgenson (FSU) |

Equivariant intersection theory and the Segre zeta function |

Algebra |

Time: 3:35 |

Location: LOV104 |

We will discuss the idea of the Segre zeta function which in the case of closed subschemes of projective spaces explains how Segre classes behave under the operation of taking cones. Following this, w... More |

Sep 11 |

Sam Ballas (FSU) |

Geometric Structures via Flags |

Topology and Geometry Seminar |

Time: 3:35 |

Location: 201 |

Roughly speaking a geometric structure is a recipe for gluing together pieces of a geometric space using geometry preserving maps to build a manifold with interesting topology. Some classical examples... More |

Sep 6 |

Paolo Aluffi (Florida State University) |

Chern classes of embeddable schemes |

Algebra seminar |

Time: 3:35 |

Location: 104 LOV |

We prove a formula computing the Chern-Schwartz-MacPherson (CSM) class of an arbitrary subscheme of a nonsingular variety in terms of the Segre class of an associated scheme. This formula generalizes ... More |

Sep 4 |

Ben Prather (FSU) |

The Symmetry of the Octonions |

Topology and Geometry Seminar |

Time: 3:35p |

Location: 201 |

The octonions are noted for there exceptional symmetry. This can be expressed by examining the size of automorphism group relative to other algebras of a similar size. In particular, the automorphism ... More |

Sep 3 |

Analysis&PDE (moved to next week) |

Analysis and PDE |

Time: 2:30 |

No location for this even specified. |

We will choose a topic to discuss first. |