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Calendar: Events for week of May 7, 2018
May 7
2:30 pm
Ivan Smith (Cambridge)
“Lagrangian Cobordism and Tropical Curves”
May 7
2:30 pm
Jordan Ellenberg (University of Wisconsin)
“Heights on Stacks”
May 7
4:00 pm
Chiu-Chu Melissa Liu (Columbia)
“Mirror Symmetry for Symplectic Toric Calabi-Yau 3-folds”
May 8
12:30 pm
Cole Graham
“On the Serpent and the Flood”
May 8
4:00 pm
Andras Vasy (Stanford)
“Fredholm Theory and the Resolvent of the Laplacian Near Zero Energy on Asymptotically Conic Spaces”
May 8
7:30 pm
Public Lecture: David Donoho
Cubberley Auditorium
David Donoho (Stanford University)
Leaping from Blackboard to Bedside: Medical Imaging and Higher-Dimensional Geometry In 2017, a new magnetic resonance imaging (MRI) device by General Electric and Siemens entered the marketplace with an advertised 10-fold speedup over traditional MRI and the potential to impact 80 million MRI scans annually. This talk will discuss the applications and some of the mathematics behind this advance, coming from the field of “compressed sensing” that leverages higher-dimensional geometry in novel ways.
May 9
12:30 pm
Jun Li (Stanford)
“Degeneration Method in Moduli Spaces (in algebraic geometry)” I will outline the construction of the stack of expanded degeneration, and show how this is used to study degeneration of moduli spaces. In the end, I will mention the challenge in how to generalize this construction to deal with moduli problems with strictly semi stable objects.
May 9
3:15 pm
Steven Rayan (Saskatchewan)
“Geometry of Weightless Kapustin-Witten Solutions on the Plane”
May 10
3:00 pm
László Miklós Lovász (UCLA)
“Graph Limits and Finite Forcibility” We study the uniqueness of optimal solutions to extremal graph theory problems. Lovász conjectured that every finite feasible set of subgraph density constraints can be extended further by a finite set of density constraints so that the resulting set is satisfied by an asymptotically unique graph.
May 11
11:30 am
Kevin Yang
“Calderon-Zigmund Theory for Random Elliptic Equations”
May 11
12:30 pm
Joey Zou
“Degree Sequences of Random Graphs”
May 11
4:30 pm
Sheldon Katz (UIUC)
“Refined BPS invariants of local surfaces and representations of affine E_8” Inspired by the work of Huang-Klemm-Poretschkin on the refined E-string, in this work in progress I give evidence for a conjecture that for a class of algebraic surfaces S with -K nef, the cohomology of the moduli space of 1-dimensional stable sheaves F with euler characteristic 1  supports a natural and non-trivial representation of a semisimple or affine Lie algebra g(S).  
Stanford University Department of Mathematics
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