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Link do kanału youtube: https://www.youtube.com/channel/UCnHfrrAKk9Jaaw8oC2s_dSQ
Zoom platform link: https://us02web.zoom.us/j/83662713532?pwd=MFpVS1NlQkt4THVtMGdYNTR2Ym93UT09
Meeting ID: 836 6271 3532 Passcode: 764579
2023-10-18, godz. 17:15, 405 IMPAN & ZOOM
MAGNUS B. LANDSTAD (Norges teknisk-naturvitenskapelige universitet, Trondheim, Norway)
2023-10-04, godz. 17:15, 405 IMPAN & ZOOM
MANISH KUMAR (IMPAN, Warszawa, Poland)
2023-06-07, godz. 17:15, 405 IMPAN & ZOOM
ROBERT YUNCKEN (Université Clermont Auvergne, France)
CRYSTALLIZING FUNCTIONS ON COMPACT LIE GROUPS
The theory of crystal bases, due to Kashiwara and Lusztig, is a means of simplifying the representation theory of semisimple Lie algebras by passing through quantum groups. Specifically, varying the parameter q of a quantized enveloping algebra, we pass from the classical theory at ...
2023-05-31, godz. 17:15, 405 IMPAN & ZOOM
ROBERTO CONTI (Sapienza Università di Roma, Italy)
CLASSICAL SYMMETRIES OF NONCOMMUTATIVE SPACES: A GUIDED TOUR THROUGH THE CUNTZ ALGEBRA CASE
Multiplets of isometries with orthogonal ranges summing up to 1 were systematically used by Doplicher and Roberts in the early 70's in their study of the superselection structure of Quantum Field Theory. Nowadays, the C*-algebra generated by any such multiplet is known as the Cuntz algebra...
2023-05-17, godz. 17:15, 405 IMPAN & ZOOM
SOUMALYA JOARDAR (Indian Institute of Science Education and Research Kolkata, India)
Let G be a compact quantum group. Then upon introducing the notion of a G-equivariant C*-correspondence and a G-C*-algebra, we shall show that a G-equivariant C*-correspondence makes the associated Pimsner algebra a G-C*-algebra. Moreover, for a Kac-type compact quan...
2023-05-10, godz. 17:15, 405 IMPAN & ZOOM
DEVARSHI MUKHERJEE (Universidad de Buenos Aires, Argentina)
THE HOMOTOPY K-THEORY FOR NON-ARCHIMEDEAN BORNOLOGICAL ALGEBRAS
I will define non-Archimedean bivariant K-theory. This is the target of the universal functor on the category of complete, torsion free bornological Zp-algebras that satisfies homotopy invariance, stability and excision, and is a non-Archimedean analogue of Cuntz's kk-theory for locally con...
2023-04-26, godz. 17:15, 405 IMPAN & ZOOM
JULIEN BICHON (Université Clermont Auvergne, France)
THE FAITHFUL FLATNESS OF HOPF ALGEBRAS OVER COIDEAL SUBALGEBRAS WITH CONDITIONAL EXPECTATION
Faithful flatness is an algebraic concept arising from algebraic geometry and closely related to the question of forming ''good'' quotients. Also, it plays a key role in the noncommutative world, especially in Hopf-algebra theory. After a review of its use and of what is known about ...
2023-04-19, godz. 17:15, 405 IMPAN & ZOOM
KONRAD AGUILAR (Pomona College, USA)
THE FELL TOPOLOGY AND THE MODULAR GROMOV-HAUSDORFF PROPINQUITY
Given a unital AF-algebra A equipped with a faithful tracial state, we endow each (norm-closed two-sided) ideal of A with a metrized quantum-vector-bundle structure. The ideals are canonically viewed as modules over A, in the sense of Latrémolière, using previo...
2023-04-12, godz. 17:15, 405 IMPAN & ZOOM
STEFAN WALDMANN (Universität Würzburg, Germany)
CONVERGENCE OF STAR PRODUCTS: OLD AND NEW
In this talk, I will explain the issue of convergence for formal star products. While the theory of formal deformation quantizations of general Poisson manifolds is well-understood and explored by many people, for physical applications, formal power series in h are not ...
2023-04-05, godz. 17:15, 405 IMPAN & ZOOM
SUTANU ROY (National Institute of Science Education and Research, India)
BRAIDED QUANTUM SYMMETRIES OF GRAPH C*-ALGEBRAS
In this talk, we will explain the existence of a universal braided compact quantum group acting on a graph C*-algebra in the twisted monoidal category of C*-algebras equipped with an action of the circle group. Along the way, we shall also present a braided version of the free unitary quantum gro...
