Yusenko Kostyantyn
Iusenko Kostiantyn
Contact information
I am currently at
Institute of Mathematics and Statistics,
University of Sao Paulo,
Caixa Postal 66281
Sao PauloSP, Brazil
05315970
Research interests
Operator algebras, Representation theory, Moduli spaces.
Curriculum vitae
PDF
Articles and Preprints
Articles
 Kostiantyn Iusenko, Evan Wilson. Some remarks on Hall algebras of bound quivers. accepted.
 Vitalij M. Bondarenko, Vyacheslav Futorny, Tatiana Klimchuk, Vladimir V. Sergeichuk, Kostyantyn Yusenko. Systems of subspaces of a unitary space. Linear Algebra Appl. 438 (2013), no. 5, pp. 25612573. ArXiv
 Kostyantyn Yusenko, Thorsten Weist. Unitarizable representations of quivers.
Algebr. Represent. Theory 16 (2013), no.5, pp. 13491383. ArXiv
 Futorny Vyacheslav, Samoilenko Yurii, Kostyantyn Yusenko. Representations of posets: Linear vs Unitary
Journal of Physics: Conference Series, 346, 1, (2012), pp. 1200612022, available at ArXiv.
 Samoilenko Yurii, Kostyantyn Yusenko. Kleiner's theorem for unitary representations of posets.
Linear Algebra and Its Applications 437, Issue 2, (2012), pp. 581–588, available at ArXiv.
 Roman Grushevoy, Kostyantyn Yusenko. On the unitarization of linear representations of primitive
partially ordered sets. Operator Theory: Advances
and Applications 190, (2008), pp. 279–294. ArXiv
 Yu. P. Moskaleva, V. L. Ostrovskii, K. A. Yusenko. On quadruples of linearly connected projections and transitive systems of subspaces. Methods Funct. Anal. Topol. 13 (2007), no. 1, pp. 4349. PDF
 Kostyantyn Yusenko. On quadruples of projections connected with linear relation. Ukr. Math. J. 58 (2006), no. 9, pp.
12891295. PDF
 Kostyantyn Yusenko. On existence of *representations of certain algebras related to extended Dynkin graphs. Methods Funct. Anal. Topol. 12 (2006), no. 2, pp. 197204. PDF
Preprints
 Kostyantyn Yusenko, Thorsten Weist. Unitarizable representations of quivers.
preprint, 22p. Preprint 2011:4, Chalmers University of Technology, also available here ArXiv
 Roman Grushevoy, Kostyantyn Yusenko. Unitarization of linear representations of nonprimitive posets.
preprint, 32p., Preprint 2010:35, Chalmers University of Technology, also available here ArXiv
In progress
 Vyacheslav Futorny, Thorsten Weist, Kostyantyn Yusenko. Gale duality and Coxeter functors for posets.
 Vladimir Sergeichuk, Kostyantyn Yusenko. Mixed representations of quivers.
 Danylo Yakimenko, Kostyantyn Yusenko. Stability of schurian representations of (N,4)poset.
Visits
Research Visits

Visit at Institute of Pure and Applied Mathematics (IMPA) (Rio de Janeiro, Brazil)
January 15th  January 29th, 2012

Visit at University of Wuppertal (Germany)
April 20th  April 29th, 2010
November 28th  December 3rd, 2010
January 31th  February 4th, 2012

Visit at University of Leipzig (Germany)
March 28th  April 19th, 2010
November 5th  November 27th, 2010
 Trimester program "Rigidity", Hausdorff Institute for Mathematics,
Bonn (Germany)
October 16th  December 16th, 2009
Recent visited conferences and shools
 XXII Brazilian Algebra Meeting
Salvador, Brazil
15 July  20 July, 2012
 6th European Congress of Mathematics
Krakow, Poland
2 July  7 July, 2012
 Meeting on Commutative Algebra and Algebraic Geometry
Maresias, Brazil
16 October  22 October, 2011
Some Photos
 First Latin American School on Algebraic Geometry and Applications
BuenosAires, Argentina
01 July  5 July, 2011
Robin Hartshorne's lectures
Some Photos
 28th Brazilian Mathematical Colloquium
Rio de Janeiro, Brazil
17 July  27 July, 2011
 XV ELAM. Latinamerican School of Mathematics. Noncommutative algebra and Lie Theory
Cordoba, Argentina
16 May  27 May, 2011
Pere Ara's lectures
K. R. Goodearl's lectures
Alex Lubotzky's presentations
David Vogan's lectures
Adriano Moura's lectures
Basic courses (representations of group, Galois theory, theory of modules)
 Summer school on C*algebras and their interplay with dynamical systems
Sophus Lie Conference Center in Nordfjordeid, Norway
31 May  4 June, 2010
Andreas Thom's lectures
Kalishewskii and Quigg's lectures
Aidan Sims' lectures
 Von Neumann algebras and group actions
Master Class, The University of Copenhagen, Denmark
2529 January, 2010
 Operator Algebras and Applications
International Summer School, IST, Lisbon, Portugal
1519 June, 2009
Future events
Activities
Grants
 Ukrainian Grant for Young Scientists (with Volodymyr Tesko). 07.200912.2010
 PostDoc Scholarship by Swedish Institute (Chalmers, Gothenburg, Sweden, supervisor  Ludmila Turowska). 09.200908.2010
Some Notes of Given Talks

Corona Theorem. Talk at the seminar in Institute of Math., Ukraine, Winter 2009 (in Ukrainian)
PDF

Additive spectral problem. Talk at the seminar in IST, Lisbon, Portugal, Summer 2009
PDF

More notes are available on this webpage.
Organizered/coorganized learning seminars
 Basic Algebraic Geometry, 20052006, IM, Kiev, Ukraine
 Ktheory for operator algebras, 20052006, IM, Kiev, Ukraine
 Introduction to Algebraic Topology, 20062007, IM, Kiev, Ukraine
 C*seminar, 20082009, IM, Kiev, Ukraine
Problem Sets
Set 1
Set 2
Set 3
 Introduction to Algebraic Geometry, 2011, IM, Kiev, Ukraine
 Jounior and Postdoc seminars on Representation Theory, 2012, IME, SaoPaulo, Brazil
Last update: 27.08.2012
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