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Weekly research seminar
Organizers
- prof. dr hab. Henryk Żołądek
Information
Fridays, 10:15 a.m. , room: 5840Home page
http://www.mimuw.edu.pl/~baranski/dsg/seminar/Research fields
List of talks
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April 1, 2016, 10:15 a.m.
Mariusz Lemańczyk (Uniwersytet Mikołaja Kopernika)
Asymptotic orthogonality of powers of measure-preserving automorphisms and multiplicative functions
An automorphism T is called to have asymptotically orthogonal powers (AOP), if its different prime powers T^p and T^q become closer and closer to be disjoint in the sense of Furstenberg when p,q\to\infty. I will …
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March 11, 2016, 10:15 a.m.
Galina Filipuk (Uniwersytet Warszawski / IMPAN)
On Laguerre-Hahn orthogonal polynomials of class 1
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March 4, 2016, 10:15 a.m.
Anton Sadovskii (Belarus State University)
The center-focus problem for analytic systems with nonzero linear part
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Jan. 22, 2016, 10:15 a.m.
Łukasz Pawelec (SGH)
Tackling thin annuli
The measure is said to have the thin annuli property (called differently by different authors), if the measure of an annuli of width $r^k$ compared to the measure of a ball of radius $r$ goes …
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Jan. 15, 2016, 10:15 a.m.
Krzysztof Barański (Uniwersytet Warszawski)
Teoria ergodyczna funkcji wewnętrznych i dziedziny Bakera
Ergodyczne własności przekształceń wewnętrznych (ang. inner functions) na okręgu jednostkowym zostały opisane w pracach Aaronsona i Doeringa-Mañé z lat 1980-tych. Niektóre z tych wyników można zastosować do opisu dynamiki funkcji meromorficznych na brzegach jednospójnych dziedzin …
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Jan. 8, 2016, 10:15 a.m.
Anna Zdunik (Uniwersytet Warszawski)
Miary konforemne dla przekształceń przestępnych w \mathbb{C}
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Dec. 18, 2015, 10:15 a.m.
William Mance (IMPAN)
Normal numbers
We will discuss classical results relating to normal numbers. In particular we will emphasize connections with ergodic theory, fractal geometry, and computability theory. Additionally, normality for continued fraction expansion, $\beta$ expansions, L\"{u}roth series expansions, and …
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Dec. 11, 2015, 10:15 a.m.
Marcin Bobieński (Uniwersytet Warszawski)
Liouville integrable systems and perturbations
I will talk about polynomial system with first integral of the Liouville form. The main result is the finiteness theorem for polynomial perturbation of the Liouville integrable system.
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Dec. 4, 2015, 10:15 a.m.
Radosław Kurek (Uniwersytet Warszawski)
A separatric loop in the Hess-Appelrot system
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Nov. 27, 2015, 10:15 a.m.
Anna Gierzkiewicz (UR Kraków)
Integrability of the Szekeres system
The Szekeres system is a four-dimensional system of first-order, ordinary differential equations, with nonlinear, but polynomial (quadratic) righthand side.\[\begin{cases}\rho'=-\Theta\rho\\\Theta'=-\frac13\Theta^2 - 6\sigma^2-\frac12\rho\\\sigma'=\sigma^2-\frac23\Theta\sigma - E\\E'=3E\sigma- \Theta E-\frac12\rho\sigma\\\end{cases}.\]It was derived from Einstein equations as a cosmological model of …
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Nov. 20, 2015, 10:15 a.m.
Piotr Mormul (Uniwersytet Warszawski)
Aproksymacje nilpotentne w analizie nieholonomicznej - postępy i trudności w podejściu wielomianowym
It was Gianna Stefani who - in her Bierutowice 1984 talk - first started to look for something simpler than the canonical exponential coordinates of the 1st or 2nd kind. Then she used her finding …
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Nov. 13, 2015, 10:15 a.m.
Alexander Prokopenya (SGGW)
On integrating the evolutionary equations in the Restricted Three-Body Problem with variable masses
We consider a generalized case of a satellite version of the restricted three-body problem when two points P0 and P1 form a binary system, losing the mass due to the corpuscular and photon radiation. We …
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Oct. 23, 2015, 10:15 a.m.
Maciej Borodzik (Uniwersytet Warszawski / IMPAN)
Knot invariants, semigroups and the Legendre transform
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Oct. 16, 2015, 10:15 a.m.
Galina Filipuk (Uniwersytet Warszawski / IMPAN)
On meromorphic solutions of the equation P_{4,34}
