<< Wednesday, April 03, 2019 >>

## Wednesday, April 3, 2019

### Scientific Computing and Matrix Computations Seminar: Subspace methods for computing real pseudospectral abscissa and eigenvalue optimization

Seminar: EE: CS | April 3 | 2-3 p.m. | 380 Soda Hall

Ding Lu, UC Davis

Applications in computational science and engineering often involve
optimizations that require repeatedly calculating the spectrum of a smoothly
varying matrix valued function. In this talk, we consider one such a problem
for computing the real $\epsilon$-pseudospectral abscissa of a real matrix
$A$, namely, the largest real part of the eigenvalues of all real matrices
that are...   More >

### Grace-like polynomials and related questions

Seminar | April 3 | 3-4 p.m. | 1011 Evans Hall

David Ruelle, IHES

Department of Statistics

We say that the multi-affine polynomial P(z1, . . . , zm, w1, . . . , wn) is Grace-like if it does not vanish when {z1, . . . , zm is separated from {w1, . . . , wn) by a circle in the complex plane. Such polynomials have many unexpected probabilistic properties related to the work of Borcea-Brändén.

### EECS Colloquium: The Neural Code of Speech

Colloquium: Departmental: EE: CS | April 3 | 4-5 p.m. | Soda Hall, 306 (HP Auditorium)

Edward Chang, Professor of Neurological Surgery, UC San Francisco

Speaking is a defining behavior of our species. Our research seeks to understand the neural computations that govern our ability to speak and hear words. Advances in direct neurophysiological recordings from the human brain have led to a completely new view on the neural code that translates between sound and meaning. I will focus on our discoveries on the cortical representation of speech sounds...   More >