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News

Fields medalist Terence Tao will give a lecture on his proof of Sendov’s conjecture

Terence Tao, Photo credit: www.nytimes.com

On January 26, 2021, prof. Terence Tao, University of California, Los Angeles (UCLA), will deliver a colloquium talk on Sendov’s conjecture organized by the International Center for Mathematical Sciences (ICMS-Sofia) at the Institute of Mathematics and Informatics – BAS, the Institute of Mathematical Sciences of the Americas at the University of Miami (IMSA) and the Union of Bulgarian Mathematicians (UBM).

Terence Tao is an Australian-American mathematician, born in 1975. He is a professor in the Department of Mathematics at the University of California. He works in a number of mathematical areas, but primarily in harmonic analysis, PDE, geometric combinatorics, arithmetic combinatorics, analytic number theory, compressed sensing, and algebraic combinatorics. Tao is an editor or an associate editor at several mathematical journals. He is the author and co-author of over three hundred scientific publications.

Terence Tao was awarded the Fields Medal in 2006. In 2012, he won the Crafoord Prize of the Royal Swedish Academy of Sciences, which is

Blagovest Sendov, Photo credit: mmib.math.bas.bg

considered equal to the Nobel Prize. In 2014 Terence Tao became a laureate of The Breakthrough Prize in Mathematics “for numerous breakthrough contributions to harmonic analysis, combinatorics, partial differential equations and analytic number theory”.

In December 2020, Prof. Tao managed to make a major breakthrough in the proof of Sendov’s conjecture about the distribution of the critical points of a complex polynomial, proving this conjecture for sufficiently high degree polynomials (https://arxiv.org/abs/2012.04125).

His lecture is entitled Sendov’s conjecture for sufficiently high degree polynomials. The event will be held online through the Zoom platform, starting at 18:15 EET on January 26, 2021.

This event is organized in memory of Academician Blagovest Sendov who passed away one year ago.

More about Terence Tao could be found on his blog.
Find more information about his talk on https://icms.bg/.
Join Zoom Meeting: https://zoom.us/j/96005943833?pwd=cG9aalBjcTVZVy9LSHNLeVovalpIZz09

Tuesday, 26 January 2021|Tags: , , , |

The Third World Logic Day – January 14, 2021

The Third World Logic Day will be celebrated all over the world on January 14, 2021, with a series of scientific events. The World Logic Day was organized for the first time on January 14, 2019. The date of January 14 is related to two of the most prominent logicians of the twentieth century. January 14, 1978, is the date of death of Kurt Gödel and January 14, 1901, is the date of birth of Alfred Tarski.

Based on the success of this First World Logic Day, on 26 November 2019, UNESCO proclaimed 14 January to be World Logic Day and included it in its list of International Days. The event is very popular worldwide. Last year there were 60 scientific events in 35 countries and this year 45 events in 27 countries have already been registered.

To mark the day the logicians from the Bulgarian Academy of Sciences and from Sofia University “St. Kliment Ohridski” have decided to organize a joint event on the occasion of the World Logic Day 2021. The event is included in the official program of the Third World Logic Day.

A joint meeting of the Seminar of Algebra and Logic of the Institute of Mathematics and Informatics at BAS, the Seminar of Mathematical Logic of the Faculty of Mathematics and Informatics of Sofia University “St. Kliment Ohridski”, and the Seminar of Logic of the Institute of Philosophy and Sociology at BAS has been organized.

The event will take place via Zoom on January 15, 2021 (Friday) from 9:30 am local time (UTC+2). Everybody is cordially invited to attend by following the link:

https://us02web.zoom.us/j/84006543603?pwd=UjVMK0dFaFJwN2t6L1pPR2FhT2o0dz09

Time: Jan 15, 2021, 09:30 Sofia
Meeting ID: 840 0654 3603
Passcode: 116245

The programme is available here.

There will be 10 talks from the three scientific institutions. Since many scientific events are planned worldwide for January 14, the organizers of the joint seminar have decided to schedule the event for January 15, 2021.

Official guests of the joint seminar, who will participate at the opening ceremony, are:

  • Her Excellency Maria Edileuza Fontenele Reis, Ambassador of the Federative Republic of Brasil to the Republic of Bulgaria and the Republic of North Macedonia. As a former Ambassador of the Federative Republic of Brazil at UNESCO, she succeeded to include the World Logic Day in the UNESCO Calendar of International Days.
  • Karina Angelieva, Deputy Minister of Education and Science.
  • Acad. Julian Revalski, President of the Bulgarian Academy of Sciences.
  • Prof Anastas Gerdjikov, Rector of Sofia University “St. Kliment Ohridski”.

An official guest for the afternoon session of the event will be Prof. Jean-Yves Béziau, Creator of the World Logic Day and Editor-in-Chief of Logica Universalis.

The home page of the official World Welcome Celebration of January 14, 2021, is
http://www.logica-universalis.org/wld3

The page contains also a pre-recorded video address by Her Excellency Maria Edileuza Fontenele Reis to the worldwide community
that everybody can watch on
http://www.logica-universalis.org/wld3-brazilian-unesco-ambassador

Two of our colleagues, Alexandra Soskova and Valentin Goranko, are among the official guests of the ceremony.

Department of Algebra and Logic, IMI-BAS
http://www.math.bas.bg/algebra/seminarAiL/

The Nobel Prize in Physics for 2020 was awarded to a mathematician

This year Nobel prize in Physics is awarded for two independent contributions. One half was awarded to Roger Penrose for the discovery that black hole formation is a robust prediction of the general theory of relativity, the other half jointly to Reinhard Genzel and Andrea Ghez for the discovery of a supermassive compact object at the centre of our galaxy.

Roger Penrose is an eminent British mathematician and mathematical physicist. He is Emeritus Rouse Ball Professor of Mathematics at the University of Oxford. Penrose has made contributions to the mathematical physics of general relativity and cosmology. This year he was awarded half of the Nobel prize for Physics for his analysis of black hole formation in general relativity. His main contribution is the proof that the curvature singularity of a black hole is not an artefact of the symmetry, a common belief at the time, but inevitably forms as long as a trapped surface exists. In other words, as long as there are an apparent horizon a curvature singularity forms independent on the shape of the horizon. This is an extremely important discovery as it demonstrates that perturbations and deviations from spherical (or axial) symmetry do not destroy the structure of a black hole proving that black holes are a robust prediction of the theory of general relativity. Among his numerous other contributions is the formulation of the cosmic censorship hypothesis, stating that singularities need to be hidden from an observer at infinity by the event horizon of a black hole.

Reinhard Genzel is a German astrophysicist, co-director of the Max Planck Institute for Extraterrestrial Physics and Andrea Mia Ghez is an American astronomer and professor in the Department of Physics and Astronomy at UCLA. They both lead groups of astronomers that, since the early 1990s, have focused on a region called Sagittarius A* at the centre of our galaxy. The measurements of these two groups agree, with both finding an extremely heavy, invisible object that pulls on the jumble of stars, causing them to rush around at dizzying speeds. Around four million solar masses are packed together in a region no larger than our solar system. Their pioneering work has given us the most convincing evidence yet of a supermassive black hole at the centre of the Milky Way.

Wednesday, 7 October 2020|Tags: , |

Tenth International Conference on Digital Presentation and Preservation of Cultural and Scientific Heritage—DiPP2020

The Tenth International Conference on Digital Presentation and Preservation of Cultural and Scientific Heritage—DiPP2020 aims at presenting innovative results, research projects, and applications in the field of digitisation, documentation, archiving, representation, and preservation of global and national tangible and intangible cultural and scientific heritage. The main focus is to provide open access to digitised cultural heritage and to set up sustainable policies for its continuous digital preservation and conservation. The priority area is the digital presentation and preservation of cultural and historical objects under conditions of risk, including those from the Burgas region.

The forum will demonstrate innovative technologies and prototypes, including digital repositories, digital archives, virtual museums, and digital libraries, which result from established practices and achievements in the field. Representatives of public and specialised libraries, museums, galleries, archives, centers, both national and foreign research institutions, and universities are invited to participate and exchange experiences, ideas, knowledge, and best practices of the field.

DiPP2020 Programme is available at: http://dipp2020.math.bas.bg/programme.

(more…)

Thursday, 17 September 2020|Tags: , |

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