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This is an information website for the Functional Analysis and Operator Theory Webinar – with an emphasis on preserver problems and quantum information. The aim of this lecture series is to provide the community with an opportunity for regular online meetings these days when physical seminars and conferences are not possible.

This seminar is a continuation of the Preserver Webinar series with an intention to widen its scope and range of speakers.
If you are interested in following the updates, please write an e-mail to faot[dot]webinar[at]gmail[dot]com with the subject "Subscribe".

To save the dates or create calendar events for yourself we recommend you to visit https://researchseminars.org/seminar/FAOT

The talks will be accessible through the Zoom video communication platform.
Zoom link: https://istaustria.zoom.us/j/97256950873?pwd=bWd6U1kyVXZFQk1wNll5ZTlXTE1ZQT09
Meeting ID: 972 5695 0873
Passcode: 582736



April 28 12:00 London time
Speaker: 
Benoît R. Kloeckner (L'Université Paris-Est Créteil, France)
Title: Obstructions to bi-Lipschitz embeddings between Wasserstein spaces



April 14
12:00 London time
Speaker:
Jaime Santos-Rodríguez (Max Planck Institute for Mathematics, Germany)
Title: Isometric rigidity of compact Wasserstein spaces



March 31 12:00 London time
Speaker: Milán Mosonyi
(Budapest University of Technology and Economics, Hungary)
Title: Divergence radii of quantum states and classical-quantum channel coding



March 17 12:00 London time
Speaker:
María Cueto-Avellaneda (University of Granada, Spain)
Title: The role of unitary elements in the algebraic structure of a unital JB*-algebra



March 3 12:00 London time
Speaker: Marcus Huber (Insititute for Quantum Optics and Quantum Information Vienna, Austria)

Title: The Bloch representation for qudits: overview and applications



Feb 17 12:00 London time
Speaker: Andreas Winter (Universitat Autònoma de Barcelona, Spain)

Title: Entropy inequalities – beyond strong subadditivity(?)


Jan 20 13:00 London time
Speaker: Mark M. Wilde (Louisiana State University, USA)

Title: α-Logarithmic negativity


Dec 16
12:00
London time
Speaker:
Karol Życzkowski (Jagiellonian University and Polish Academy of Sciences, Poland)
Title: The set of quantum states analyzed by numerical range and numerical shadow of an operator


Nov 25 12:00 London time
Speaker:
Apoorva Khare (Indian Institute of Science, India)
Title: Entrywise positivity preservers in fixed dimension: II



Nov 18 12:00 London time
Speaker:
Apoorva Khare (Indian Institute of Science, India)
Title:
Entrywise positivity preservers in fixed dimension: I



Nov 4 12:00 London time
Speaker: Fernanda Botelho (University of Memphis, United States)
Title: Projections and isometries in Banach spaces



Oct 21 12:00 London time
Speaker: Miklós Pálfia (Sungkyunkwan University, Republic of Korea)
Title: Analytic lifts of operator monotone and concave functions



Sep 30 12:00 London time
Speaker: Dijana Ilišević (University of Zagreb, Croatia)
Title: An inverse eigenvalue problem for isometries


Sep 16 12:00 London time
Speaker: Mark Pankov (University of Warmia & Mazury, Poland and JKU Linz, Austria)
Title: A geometric approach to Wigner-type theorems



Sep 02 12:00 London time
Speaker: Haonan Zhang (IST Austria, Austria)
Title: Data processing inequalities for alpha-z Rényi relative entropies and the equality conditions



Aug 26 12:00 London time
Speaker: Ngai-Ching Wong (National Sun Yat-sen University, Taiwan)
Title: Disjointness preservers of operator algebras


Aug 19 15:00 London time
Speaker: Timur Oikhberg (University of Illinois, United States)
Title: Stability of disjointness preservation



Aug 12 12:00 London time
Speaker: Marten Wortel (University of Pretoria, South Africa)
Title: Order isomorphisms between effect algebras of atomic JBW-algebras



Aug 5 12:00 London time
Speaker: Osamu Hatori (Niigata University, Japan)
Title: When does an isometry on a Banach algebra preserve the multiplicative structure?



July 29 12:00 London time
Speaker: Ying-Fen Lin (Queens University Belfast, Northern Ireland)
Title: Schur multipliers and positive extensions



July 22 16:00 London time
Speaker: Javad Mashreghi (Laval University, Canada)
Title: On Gleason-Kahane-Zelazko Theorems



July 15 12:00 London time
Speaker: Denny H. Leung (National University of Singapore, Singapore)
Title: Nonlinear biseparating maps



July 8 12:00 London time
Speaker: Bas Lemmens (University of Kent, United Kingdom)
Title: A metric version of a theorem by Poincaré


July 1 12:00 London time
Speaker: Peter Semrl (University of Ljubljana, Slovenia)
Title:
Loewner's theorem for maps on operator domains


June 24 12:00 London time
Speaker: Michiya Mori (University of Tokyo, Japan)
Title: Lattice isomorphisms between projection lattices of von Neumann algebras


June 17 12:00 London time
Speaker: Matej Bresar (University of Ljubljana and University of Maribor, Slovenia)
Title: Zero product determined algebras and commutativity preservers



June 12 16:00 London time
Speaker: Antonio Peralta (University of Granada, Spain)
Title: Tingley's problem for subsets strictly smaller than the unit sphere



June 05 12:00 London time
Speaker: Lajos Molnár (University of Szeged, Hungary)
Title: Means and their preservers

 
May 29 16:00 London time
Speaker: Chi-Kwong Li  (The College of William and Mary, Virginia)
Title: Quantum states and quantum channels






Organizers:

György Pál Gehér
University of Reading

Tamás Titkos
Alfréd Rényi Institute of Mathematics

Dániel Virosztek
Institute of Science and Technology Austria



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