In cryo-electron microscopy (cryo-EM), a microscope generates a
top view of a sample of randomly-oriented copies of a molecule. The
cryo-EM problem is to use the resulting set of noisy 2D projection
images taken at unknown directions to reconstruct...
In this talk we will present an overview of the hypermatrix
generalization of matrix algebra proposed by Mesner and
Bhattacharya in 1990. We will discuss a spectral theorem for
hypermatrices deduced from this algebra as well as connections
with...
This is intended to be a survey talk, accessible to a general
mathematical audience. The cdh topology was created by Voevodsky to
extend motivic cohomology from smooth varieties to singular
varieties, assuming resolution of singularities (for...
We use critical block sensitivity, a new complexity measure
introduced by Huynh and Nordstrom (STOC 2012) to study the
communication complexity of search problems. Our main result is a
simple proof that if S is a search problem with high
critical...