For more information about this meeting, contact Robert Vaughan, Mihran Papikian, Ae Ja Yee.
|Title:||F-regular vs log terminal surfaces|
|Seminar:||Algebra and Number Theory Seminar|
|Speaker:||Karl Schwede, Penn State|
|Log terminal singularities are key building blocks in the classification of algebraic varieties. In characteristic p > 0, they seem closely related to F-regular singularities, introduced independently in tight closure theory. It is easy to see that F-regular singularities are log terminal, but the converse is generally false (although true in ``big characteristic''). We make this precise for surface singularities, for every pair $(X, D)$ where the coefficients of $D$ come from a certain set, we find a $p > 0$ depending only on the coefficients of $D$ such that if $(X, D)$ is log terminal, then $(X, D)$ is also $F$-regular.
This is joint work with Paolo Cascini and Yoshinori Gongyo.|
Room Reservation Information
|Date:||04 / 24 / 2014|
|Time:||11:15am - 12:05pm|