seminar announcement - Ada Boralevi

[Emilia Mezzetti]

Seminar announcement

University of Trieste


Thursday, October 20, 2016, at 2.30 p.m.

Ada Boralevi (SISSA)

will speak on

"Orthogonal and unitary tensor decomposition from an algebraic perspective "

Abstract: While every matrix admits a singular value decomposition, in 
which the terms are pairwise orthogonal in a strong sense, higher-order 
tensors typically do not admit such an orthogonal decomposition.  In 
this talk I will present an intrinsic characterization of those tensors 
that do, by means of polynomial equations of degree at most four. The 
exact degrees, and the corresponding polynomials, are different in each 
of three times two scenarios: ordinary, symmetric, or alternating 
tensors; and real-orthogonal versus complex-unitary. This is a joint 
project with J. Draisma, E. Horobet, and E. Robeva.

VENUE: Seminar room (DMG, Sezione di Matematica e Informatica, H2 
building, Via A. Valerio 12/1, 3rd floor, room 334

EVERYBODY INTERESTED IS MUCH WELCOME TO ATTEND