Week of May 30, 2021

Mon May 31, 2021
4:00pm to 5:30pm - Zoom - Logic Set Theory
Garret Ervin - (Carnegie Mellon University)
Paths and Boundaries in Locally Finite Graphs

The seminar is moved to Monday June 7, 2021

Tue Jun 1, 2021
4:00pm to 5:00pm - Zoom - Differential Geometry
Kelei Wang - (Wuhan University)
A priori estimates for stable solutions to nonlinear elliptic equations

In many elliptic variational problems, one usually needs the information on the stability or Morse index to get some good a priori estimates. In this talk I will review a common phenomenon about this estimate and some difficulties for semilinear elliptic equations. I will also discuss my joint work with J. Wei on stable solutions of Allen-Cahn equation, where we get a uniform second order estimate on clustering interfaces.

Thu Jun 3, 2021
9:00am to 10:00am - Zoom - Inverse Problems
Francis Chung - (University of Kentucky)
Optical Inverse Problems with Local Data

https://sites.uci.edu/inverse/

3:00pm - Zoom meeting : https://uci.zoom.us/j/94130179823 - Number Theory
Oli Gregory - (University of Exeter)
A deformational semistable p-adic Hodge conjecture

Let k be a perfect field of characteristic p>0 and let X be a proper scheme over W(k) with semistable reduction. I shall define a log-Chow group for the special fibre X_k and give an interpretation in terms of logarithmic Milnor K-theory. Then, by gluing a logarithmic variant of the Suslin-Voevodsky motivic complex to a log-syntomic complex along the logarithmic Hyodo-Kato Hodge-Witt sheaf, I will prove that an element of the r-th log-Chow group of X_k formally lifts to the continuous log-Chow group of X if and only if it is “Hodge” (i.e. its log-crystalline Chern class lands in the r-th step of the Hodge filtration of the generic fibre of X under the Hyodo-Kato isomorphism). This simultaneously generalises a result of Yamashita (which is the case r=1), and of Bloch-Esnault-Kerz (which is the case of good reduction). This is joint work with Andreas Langer.

Fri Jun 4, 2021
4:00pm to 5:00pm - Zoom https://zoom.us/j/8473088589 - Graduate Seminar
Roman Vershynin - (UC Irvine)
Graduate Seminar

TBA