GEOMETRIJA, DINAMIKA, INTEGRABILNI SISTEMI - GDIS 2010

Druga medjunarodna konferencija pod nazivom "GEOMETRIJA, DINAMIKA, INTEGRABILNI SISTEMI - GDIS 2010", održaće se od 7-13. septembra 2010. u Beogradu.

Svečano otvaranje konferencije biće u utorak, 7. septembra 2010, u 10 časova u svečanoj sali SANU.

Više informacija o konferenciji možete naći na strani:
http://www.mi.sanu.ac.rs/~gdis2010

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The 29th International Conference on Lexis and Grammar, 15-18. septembar, Beograd

Detaljnije:

Matematički fakultet će od 15. do 18. septembra 2010. biti jedan od domaćina međunarodne konferencije:

"The 29th International Conference on Lexis and Grammar".

Više detalja o organizaciji, učesnicima, kao i program mogu se naći na sajtu konferencije http://lgc2010.matf.bg.ac.rs/.

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Seminar Geometrija, vizuelizacija i obrazovanje sa primenama, 9. septembar 2010.

Detaljnije:

U četvrtak, 9. septembra 2010. u 17:15 časova u sali 301f  Matematičkog Instituta SANU, Knez Mihajlova 35, održaće se vanredni sastanak  Seminara.

Predavanje pod nazivom "Connections and Curvature in Differential Geometry" održaće Graham Hall, University of Aberdeen.

Apstrakt:

In this talk I will try to indicate precisely the relationships between the various ways that the curvature of a manifold can manifest itself. Let M be a manifold of dimension n admitting a connection D which is the Levi-Civita connection of a metric g on M of arbitrary signature. The curvature, fixed by g, shows itself in many ways;  by the curvature tensor Riem derived from D, by the holonomy group of D, by the unparametrised geodesics arising from D (the so-called, projective structure), by the Weyl conformal tensor, C, by the Weyl projective tensor, W,  by the sectional curvature of Riem and g and, doubtless, many others. Clearly, g determines D, Riem, C,  W and the sectional curvature. It is then interesting to ask how many other relationships there are between these structures and, in particular, to what extent the original metric g can be recovered from each of them.

 I will show that there are many interesting links between them and, in the situation when the dimension of M is small, they can be quite precisely stated. On the other hand, not all such relations between them are as convenient as one might like and I will indicate this by means of examples. Such problems are, of course, interesting for differential geometers. In addition, the situation when M has dimension 4 and g is of Lorentz signature, is interesting for general relativity theory, especially the connection between the projective structure (more precisely, the unparametrised, timelike geodesics on M) and the Newton-Einstein principle of equivalence.

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Predavanje prof Endre Šilija u SANU, 3. septembar 2010.

Predavanje, prof. Endre Šili, SANU, 3. septembar 2010.

Detaljnije: U petak, 3. septembra 2010. u okviru sastanka Odeljenja za matematiku, fiziku i geo-nauke, predavanje će održati prof. Endre Šili (Endre Süli), član Matematičkog instituta Univerziteta u Oksfordu i inostrani član SANU.

Naziv predavanja: MATEMATIČKI MODELI U KINETIČKOJ TEORIJI POLIMERNIH RASTVORA: EGZISTENCIJA, EKVILIBRACIJA I APROKSIMACIJA GLOBALNIH REŠENjA

Predavanje će se održati u sali 2 Akademije, Knez Mihailova 35/I, sa početkom u 12h.

Apstrakt predavanja možete preuzeti ovde.

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Zajednički sastanak Odeljenja za matematiku i Odeljenja za mehaniku, 31. avgust 2010.

Detaljnije:

Matematički institut SANU organizuje zajednički sastanak Odeljenja za  matematiku i Odeljenja za mehaniku, u utorak, 31.8. u 18h u sali 2 SANU.

Predavač: prof. Oskar Mencer, Imperial College London

Naziv predavanja: Vertical Acceleration: From Algorithms to Logic Gates

Abstract. Huge growth in the complexity of science over the past decade has driven the need for ever more computationally demanding mathematical models. This has in turn led to massive growth in data center compute capacity, and consequently power and cooling requirements. We report the real-world results from Maxeler Technologies to improve the price-performance and just raw speed for financial and seismic computations by using custom computing machines. The key to our acceleration approach is the vertical acceleration of key pieces of the algorithms, including the bit level, arithmetic level, architecture level, and algorithm level.

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Sastanak Odeljenja za matematiku, 16. avgust 2010.

Detaljnije: Vanredni sastanak Odeljenja za matematiku, odrđžaće se u ponedeljak, 16. avgusta 2010 u sali 2, SANU u 11h.

Predavač:
Zoran Obradović Director, Center for Information Science and Technology, Temple University, Philadelphia, USA


Naslov predavanja:
Structured Regression by Continuous Conditional Random Fields and Multiple Noisy Oracles

ABSTRACT:

We will first describe and evaluate our new kind of probabilistic model for structured regression called continuous conditional random fields (CCRF) that uses multiple non-structured predictors as its features. These features are constructed such that the result is a Gaussian predictor where learning is reduced to convex optimization leading to a global solution for a set of parameters while inference is conveniently conducted through matrix computation.
Then, we will present a new Bayesian approach that learns a regression model from data with noisy labels obtained by multiple oracles. Our method provides a closed form solution for model parameters and in our experiments was consistently more accurate than a model trained with averaged estimates from multiple oracles as labels.
Presented results are obtained in collaboration with Y. Guo, V. Ouzienko, V. Radosavljevic, K. Ristovski and S. Vucetic at Temple University. Both articles will appear at the Proc. 19th European Conf. on Artificial Intelligence, Lisbon, Portugal, Aug. 2010.

SPEAKER INFORMATION:
Zoran Obradovic, professor of Computer and Information Sciences and the director of the Center for Information Science and Technology at Temple University in Philadelphia is an internationally recognized leader in data mining and bioinformatics.  He has published about 220 articles addressing data mining challenges in health informatics, climate and ecological management, the social sciences, and other domains. Obradovic was the program chair at six, track chair at seven and program committee member at about 40 international conferences on data mining. He currently serves as an editorial board member at seven journals and is the executive editor at the journal on Statistical Analysis and Data Mining which is the official publication of the American Statistical Association (ASA).

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Studentski tim Matematičkog fakulteta osvojio 4 srebrne medalje na međunarodnom takmičenju IMC 2010 u Blagoevgradu

Detaljnije: Sa zadovoljstvom Vas obaveštavamo da je studentski tim Matematičkog fakulteta u sastavu:

Marija Jelić, Marijana Smailagić, Igor Uljarević i Raca Todosijević

pod iskusnim rukovodstvom prof. Đorđa Dugošije osvojio 4 srebrne medalje na prestižnom međunarodnom takmičenju iz matematike  IMC 2010 u Blagoevgradu, Bugarska (International Mathematics Competition for University Students 2010 http://www.imc-math.org.uk/).

Čestitamo takmičarima i svima koji su pomogli i doprineli velikom uspehu. Planiramo da krajem avgusta ili  početkom septembra organizujemo prijem povodom postignutih rezultata naših studenata.

U ime dekanskog kolegijuma Matematičkog fakulteta,
prof dr Miodrag Mateljević

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Sastanak CGTA seminara, 13. jul 2010.

Detaljnije: Naredni sastanak CGTA seminara održaće se u utorak, 13.07.2010, od 18-20h, na Matematičkom fakultetu, IV sprat (BIM sala)

Predavač: Ph.D., Mathematics, Princeton University Professor of Mathematics, Brandeis University

Naziv predavanja: An introduction to higher torsion invariants of smooth bundles and related topics.

Predavanje je zamišljeno kao veoma interaktivno, tj. prilika da se postave pitanja  o nekim od centralnih tema topologije, geometrije i algebre iz oblasti ekspertize prof. Iguse.

Drugo predavanje tokom svog boravka  Beogradu prof Igusa će održati u okviru Odeljenja za matematiku, u petak, 16.07.2010. u 14h (sala 2, SANU)

Naziv predavanja: THE CATEGORY OF REGULAR MATROIDS

Abstract: In this talk I will explain the definitions of categories of graphs and matroids, review recent results about the homotopy type of categories of graphs and its relationship to the cohomology of the mapping class group of a punctured surface and show how these are related to the category of regular matroids and their generalizations. I will explain the purpose of this theory and some preliminary results, most of which are in my paper ``Families of regular matroids'' which is on the ArXiv.

Napomena: Zamišljeno je da oba predavanje budu preglednog karaktera, pristupačna i interesatna širem krugu slušalaca uključujući i mlade matematičare i studente.

Profesionalni detalji o prof. Igusi mogu se naći na:
http://people.brandeis.edu/~igusa/

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Sastanak CGTA seminara, 6. jul 2010.

Detaljnije: Naredni sastanak CGTA seminara održaće se u utorak, 6. jula 2010. od 18:00 - 20:00 časova, na IV sprat (BIM sala)

Predavač: Rade Živaljević

Naziv predavanja: Matroidi, 15-minutni kurs za nespecijaliste.

U Beogradu će kao gost Matematičkog fakulteta i Matematičkog instituta od 13-16. jula boraviti poznati američki matematičar Kiyoshi Igusa (Brandeis University).

Profesor Igusa će održati predavanje 13. jula u redovnom terminu CGTA seminara, kao i predavanje na Odeljenju za matematiku MI SANU, u petak, 16.07.2010. 14 časova, sala 2 SANU pod naslovom THE CATEGORY OF REGULAR MATROIDS.
Naš plan je da na sastanku 6.07. napravimo pregled fascinantne (!) teorije matroida i pokušamo da objasnimo kako i zašto se krug zatvorio u algebarskoj topologiji. Začetnik teorije matroida je isti onaj Hassler Whitney koji je koautor Stiefel-Whitney-ovih karakterističnih kohomoloških klasa a profesor Igusa  (http://people.brandeis.edu/~igusa/) je poznat po svojim velikim doprinosima topologiji i geometriji (higher torsion invariants of smooth bundles itd.)


Najava predavanja:


Kiyoshi Igusa, Ph.D., Mathematics, Princeton University
Professor of Mathematics, Brandeis University : "The category of regular matroids".

Abstract: In this talk I will explain the definitions of categories of graphs and matroids, review recent results about the homotopy type of categories of graphs and its relationship to the cohomology of the mapping class group of a punctured surface and show how these are related to the category of regular matroids and their generalizations. I will explain the purpose of this theory and some preliminary results, most of which are in my paper "Families of regular matroids" which is on the ArXiv.

Napomena (R.Živaljević, CGTA-seminar): Profesor Igusa je vrlo poznati specijalista za algebrasku topologiju ali i mnoge druge oblasti matematike. U podnaslovu rada ''Families of regular matroids'', arXiv:0911.2014v2 [math.CO], na kome je bazirano ovo multidisciplinarno predavanje, stoji:
"This paper is dedicated to my late friend, relative and fellow Mathematician Dragan Acketa who loved matroids".

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Seminar Geometrija, vizuelizacija i obrazovanje sa primenama, 1. jul 2010.

Detaljnije: Naredni sastanak Seminara Geometrija, vizuelizacija i obrazovanje sa primenama održaće se u četvrtak, 1. jula 2010, u 17:15h u prostorijama Matematičkog instituta, sala 301f.

Predavač: Ivko Dimitrić

Naslov predavanja: "Krivinski-prilagodjene hiperpovrši simetričnih prostora ranga 1 i njihov Cenov tip".

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