BEGIN:VCALENDAR
VERSION:2.0
PRODID:researchseminars.org
CALSCALE:GREGORIAN
X-WR-CALNAME:researchseminars.org
BEGIN:VEVENT
SUMMARY:Sylvia Serfaty (NYU)
DTSTART:20210506T125000Z
DTEND:20210506T135000Z
DTSTAMP:20260404T111332Z
UID:ATHABrazil/1
DESCRIPTION:Title: Systems of points with Coulomb interactions\nby Sylvia Serfa
ty (NYU) as part of Harmonic Analysis\, Approximation Theory and related t
opics\n\n\nAbstract\nLarge ensembles of points with Coulomb interactions a
rise in various settings of condensed matter physics\, classical and quant
um mechanics\, statistical mechanics\, random matrices and even approximat
ion theory\, and they give rise to a variety of questions pertaining to an
alysis\, Partial Differential Equations and probability.\n\nWe will first
review these motivations\, then present the ”mean-field” derivation of
effective models and equations describing the system at the macroscopic s
cale. We then explain how to analyze the next order behavior\, giving info
rmation on the configurations at the microscopic level and connecting with
crystallization questions\, and finish with the description of the effect
of temperature.\n
LOCATION:https://stable.researchseminars.org/talk/ATHABrazil/1/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Carlos Beltran (Universidad de Cantabria)
DTSTART:20210520T140000Z
DTEND:20210520T150000Z
DTSTAMP:20260404T111332Z
UID:ATHABrazil/2
DESCRIPTION:Title: The origin and the destiny of Smale’s 7th problem\nby Carl
os Beltran (Universidad de Cantabria) as part of Harmonic Analysis\, Appro
ximation Theory and related topics\n\n\nAbstract\nSmale’s 7th problem as
ks for an efficient description of N points in the unit sphere with quasio
ptimal logarithmic energy (to be though of as the repulsion energy one wou
ld expect if the points were equal-charged particles). In this talk I will
explain the origins of this problem\, the reason why it was included in S
male’s list\, the state of the art in the research and my personal viewp
oint on its destiny.\n
LOCATION:https://stable.researchseminars.org/talk/ATHABrazil/2/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Loredana Lanzani (Syracuse University)
DTSTART:20210603T130000Z
DTEND:20210603T140000Z
DTSTAMP:20260404T111332Z
UID:ATHABrazil/3
DESCRIPTION:Title: The commutator of the Cauchy-Szegő projection for domains in C
ˆn with minimal smoothness\nby Loredana Lanzani (Syracuse University)
as part of Harmonic Analysis\, Approximation Theory and related topics\n\
nAbstract: TBA\n
LOCATION:https://stable.researchseminars.org/talk/ATHABrazil/3/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Virginia Naibo (Kansas State University)
DTSTART:20210617T140000Z
DTEND:20210617T150000Z
DTSTAMP:20260404T111332Z
UID:ATHABrazil/4
DESCRIPTION:Title: Boundedness properties of Hermite pseudo-multipliers\nby Vir
ginia Naibo (Kansas State University) as part of Harmonic Analysis\, Appro
ximation Theory and related topics\n\n\nAbstract\nFourier multipliers and
pseudo-differential operators are defined by means of the Fourier transfor
m and play an important role in the study of partial differential equation
s. In the same spirit\, Hermite pseudo-multipliers are associated to Herm
ite expansions and they represent the counterparts to pseudo-differential
operators in the Hermite setting. \nAfter some preliminaries\, we will pre
sent results on boundedness properties of pseudo-multipliers in function s
paces associated to the Hermite operator. The main tools in the proofs inv
olve new molecular decompositions and molecular synthesis estimates for He
rmite Besov and Hermite Triebel-Lizorkin spaces\, which allow to obtain bo
undedness results on spaces for which the smoothness allowed includes non-
positive values. In particular\, we obtain boundedness results for pseudo-
multipliers on Lebesgue and Hermite local Hardy spaces.\nThe talk is based
on joint work with Fu Ken Ly (The University of Sydney).\n
LOCATION:https://stable.researchseminars.org/talk/ATHABrazil/4/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Maria Cristina Pereyra (University of New Mexico)
DTSTART:20210701T140000Z
DTEND:20210701T150000Z
DTSTAMP:20260404T111332Z
UID:ATHABrazil/5
DESCRIPTION:Title: A tour of Dyadic Harmonic Analysis\nby Maria Cristina Pereyr
a (University of New Mexico) as part of Harmonic Analysis\, Approximation
Theory and related topics\n\n\nAbstract\nIn harmonic analysis we study bou
ndedness properties on various function spaces of for example maximal oper
ators and singular integrals among many other operators. There is a parall
el dyadic setting where often proofs are simpler. I would like to give you
a panorama of this dyadic world and how it connects heuristically and now
adays very precisely to the non-dyadic world.\n
LOCATION:https://stable.researchseminars.org/talk/ATHABrazil/5/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Loukas Grafakos (University of Missouri)
DTSTART:20210916T140000Z
DTEND:20210916T150000Z
DTSTAMP:20260404T111332Z
UID:ATHABrazil/6
DESCRIPTION:Title: Classical Multiplier Theorems and Recent Improvements\nby Lo
ukas Grafakos (University of Missouri) as part of Harmonic Analysis\, Appr
oximation Theory and related topics\n\nAbstract: TBA\n
LOCATION:https://stable.researchseminars.org/talk/ATHABrazil/6/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Tamara Grava (SISSA & Bristol)
DTSTART:20211007T140000Z
DTEND:20211007T150000Z
DTSTAMP:20260404T111332Z
UID:ATHABrazil/7
DESCRIPTION:Title: Gibbs ensemble for the discrete nonlinear Schrodinger equation\,
circular beta-ensemble and double confluent Heun equation\nby Tamara
Grava (SISSA & Bristol) as part of Harmonic Analysis\, Approximation Theor
y and related topics\n\nAbstract: TBA\n
LOCATION:https://stable.researchseminars.org/talk/ATHABrazil/7/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Ming Xiao (UCSD)
DTSTART:20211028T140000Z
DTEND:20211028T150000Z
DTSTAMP:20260404T111332Z
UID:ATHABrazil/8
DESCRIPTION:Title: Normal Stein spaces with Bergman-Einstein metric and finite ball
quotients\nby Ming Xiao (UCSD) as part of Harmonic Analysis\, Approxi
mation Theory and related topics\n\n\nAbstract\nIn this talk\, we will sta
rt with a conjecture posed by Cheng\, which states that the Bergman metric
of a bounded\, strongly pseudoconvex domain in Cn with smooth boundary is
Khaler-Einstein if and only if the domain is biholomorphic to the unit ba
ll Bn. Then we will discuss the recent developments on solving and general
izing Cheng’s conjecture. \n\nThe talk is based on a joint paper with Hu
ang\, and a recent preprint with Ebenfelt and Xu.\n
LOCATION:https://stable.researchseminars.org/talk/ATHABrazil/8/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Christopher Bishop (Stony Brook)
DTSTART:20211111T190000Z
DTEND:20211111T200000Z
DTSTAMP:20260404T111332Z
UID:ATHABrazil/9
DESCRIPTION:Title: Weil-Peterson curves\, traveling salesman theorems and minimal s
urfaces\nby Christopher Bishop (Stony Brook) as part of Harmonic Analy
sis\, Approximation Theory and related topics\n\nAbstract: TBA\n
LOCATION:https://stable.researchseminars.org/talk/ATHABrazil/9/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Dmitry Gorbachev (Tula State University)
DTSTART:20211109T140000Z
DTEND:20211109T150000Z
DTSTAMP:20260404T111332Z
UID:ATHABrazil/10
DESCRIPTION:Title: One Fourier optimization problem for bandlimited functions in $
L^1(\\mathbb R^d)$\nby Dmitry Gorbachev (Tula State University) as par
t of Harmonic Analysis\, Approximation Theory and related topics\n\nAbstra
ct: TBA\n
LOCATION:https://stable.researchseminars.org/talk/ATHABrazil/10/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Irina Mitrea (Temple University)
DTSTART:20211202T140000Z
DTEND:20211202T150000Z
DTSTAMP:20260404T111332Z
UID:ATHABrazil/11
DESCRIPTION:Title: On the Lack of Fredholm Solvability for the $L^p$ Dirichlet Pro
blem for Weakly Elliptic Systems in the Upper Half-Space\nby Irina Mit
rea (Temple University) as part of Harmonic Analysis\, Approximation Theor
y and related topics\n\nAbstract: TBA\n
LOCATION:https://stable.researchseminars.org/talk/ATHABrazil/11/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Andrei Martinez-Finkelshtein (Baylor University)
DTSTART:20211209T140000Z
DTEND:20211209T150000Z
DTSTAMP:20260404T111332Z
UID:ATHABrazil/12
DESCRIPTION:Title: Electrostatic partners and zeros of orthogonal and multi-orthog
onal polynomials\nby Andrei Martinez-Finkelshtein (Baylor University)
as part of Harmonic Analysis\, Approximation Theory and related topics\n\n
\nAbstract\nThe well-known electrostatic interpretation of the zeros of He
rmite\, Laguerre or Jacobi polynomials that goes back to the 1885 work of
Stieltjes is one of the most popular models in the theory of orthogonal po
lynomials. Besides its elegance\, it has a clear pedagogic value\, allowin
g to predict monotonicity properties of zeros in terms of parameters or th
eir asymptotic distribution. It was picked up and extended to several cont
exts\, such as orthogonal and quasi-orthogonal polynomials on the real lin
e and the unit circle\, for classical and semiclassical weights. \n\nMulti
ple orthogonal (or Hermite-Pade) polynomials satisfy a system of orthogona
lity conditions with respect to a set of measures. They find applications
in number theory\, approximation theory\, and stochastic processes\, and t
heir analytic theory\, extremely rich\, has been developing since the 1980
s. However\, no electrostatic interpretation of the zeros of such polynomi
als has been described in the literature. In this talk\, I will describe s
uch a model for the case of type II Hermite-Pade polynomials\, will discus
s its link with the asymptotic behavior of such zeros\, and will illustrat
e it with some simple cases. \n\nThis is joint work with R. Orive (Univers
idad de La Laguna\, Canary Islands\, Spain) and J. Sanchez-Lara (Granada U
niversity\, Spain).\n
LOCATION:https://stable.researchseminars.org/talk/ATHABrazil/12/
END:VEVENT
END:VCALENDAR