https://uniba.sk/ Najnovšie novinky sk https://uniba.sk/fileadmin/tt_news_article.gif https://uniba.sk/ Najnovšie novinky TYPO3 - get.content.right http://blogs.law.harvard.edu/tech/rss Mon, 09 Dec 2019 08:19:00 +0100 https://uniba.sk/ 26 to 28 March 2019 (Tuesday to Thursday), Comenius University in Bratislava Level Lama show with Sajfa and Adela as a guest in our Auditorium, the “grilling” of the rector, talks by successful students and graduates, and informative and fun lectures. And in the presence of John Amos Comenius himself, we shall cut the birthday cake! For more information, follow the 100 Years with Amos! event on Facebook. Entry to all events is free. Comenius University rector Marek Števček has declared that there shall be no classes on Wednesday, 27 March 2019, so all students have a day off. Instead of just going home, come and have fun with your university!]]> [RUK] Titulka - slider EN pr@uniba.sk Mon, 25 Mar 2019 10:23:00 +0100 https://uniba.sk/ Friday 29.3.2019 at 11:00, room M/213 Věra Kurková (Czech Academy of Sciences):
Limitations of Shallow Networks

Abstract:
Although originally biologically inspired neural networks were introduced as multilayer computational models, later shallow architectures (with one hidden layer of computational units) became dominant in applications.
Recently, interest in architectures with several layers was renewed due to successes of deep convolutional networks.
Experimental results motivated theoretical research aiming to give some answers to the question: When and why are deep networks better than shallow ones? This lecture will present some recent theoretical results on complexity of shallow networks performing high-dimensional tasks. In particular, it will focus on probabilistic and constructive lower bounds on approximate measures of network sparsity. Connections with the No Free Lunch Theorem, the central paradox of coding theory, and pseudo-noise sequences will be discussed. web: https://beda.dcs.fmph.uniba.sk/seminar]]> [FMFI] Prednášky a semináre [FMFI] Kalendár Rastislav.Kralovic@fmph.uniba.sk Mon, 25 Mar 2019 10:14:00 +0100 https://uniba.sk/ Bratislava, 22 March 2019: Large and costly machines may be replaced by the S-Case medical... [RUK] Titulka - slider EN [LF] EN Titulka - slider pr@uniba.sk Mon, 25 Mar 2019 09:10:00 +0100 https://uniba.sk/ Thursday 28.3.2019 at 14:00, Lecture room F2/51 Seyedehneda Siadati, PhD. (University of Mazandaran, Iran):
Experimental Investigation of Non-Thermal Atmospheric Pressure Plasma Jet ]]> [FMFI] Prednášky a semináre [FMFI] Kalendár Anna.Zahoranova@fmph.uniba.sk Sun, 24 Mar 2019 20:56:00 +0100 https://uniba.sk/ 26 to 28 March 2019 (Tuesday to Thursday), Comenius University in Bratislava Level Lama show with Sajfa and Adela as a guest in our Auditorium, the “grilling” of the rector, talks by successful students and graduates, and informative and fun lectures. And in the presence of John Amos Comenius himself, we shall cut the birthday cake! For more information, follow the 100 Years with Amos! event on Facebook. Entry to all events is free. Comenius University rector Marek Števček has declared that there shall be no classes on Wednesday, 27 March 2019, so all students have a day off. Instead of just going home, come and have fun with your university!]]> [RUK] Kalendár [RUK] Titulka - slider [FM] Titulka - slider pr@uniba.sk Mon, 25 Mar 2019 09:27:00 +0100 https://uniba.sk/ Two of the most prominent scientific personalities in Slovakia work at Comenius University in... [RUK] Titulka - úzke novinky [FMFI] Titulka - úzke novinky [FMFI] Úspechy [LF] Titulka - úzke novinky pr@uniba.sk Fri, 22 Mar 2019 07:07:00 +0100 https://uniba.sk/ Does your entrepreneurial dream include great inventions that will help your community or your... Social Impact Award Slovakia with your business idea and win interesting prizes. More information: Workshop 1 Idea generation 2.4.2019 Workshop 2 Impact Canvas 16.4.2019 Workshop 3 Social change 30.4.2019 Workshop 4 Business modeling 14.5.2019]]> [UVP][Inkubátor][Aktivity] Pripravované [PdF] Titulka - úzke novinky [FMFI] Oznamy pre študentov [FMFI] Oznamy pre zamestnancov [FM] Titulka - široké novinky Thu, 21 Mar 2019 10:19:00 +0100 https://uniba.sk/ Friday 29.3.2019 at 14:00, Lecture room F2/272 František Herman (ETH Zürich):
Deviation from the Fermi-Liquid Transport Behavior in the Vicinity of a Van Hove Singularity
Abstract:
Recent experiments revealed non-Fermi liquid resistivity in the unconventional superconductor Sr₂RuO₄ when strain pushes one of the Fermi surfaces close to a van Hove singularity. The origin of this behavior and whether it can be understood from a picture of well defined quasi-particles is unclear. We employ a comprehensive numerical Boltzmann transport analysis beyond the single relaxation-time approximation based on a single band which undergoes a Lifshitz transition either due to uni-axial or epitaxial strain. Analytically investigating impurity scattering, valid for the lowest temperatures, we clarify the role of the diverging density of states together with the locally flat band at the point of the Lifshitz transition in the general case. In the numerical study, we find good qualitative agreement with resistivity measurements on uni-axially strained Sr₂RuO₄, including the temperature scaling and the temperature dependence of the resistivity peak. Our results imply that at least up to close to the Lifshitz transition, a description starting from well-defined quasi-particles holds. To test the validity of Boltzmann transport theory in the vicinity of a van Hove singularity, we provide further experimentally accessible parameters, such as thermal transport, Seebeck coefficient and Hall resistivity and compare different strain scenarios.]]> [FMFI] Prednášky a semináre [FMFI] Kalendár Richard.Hlubina@fmph.uniba.sk Wed, 20 Mar 2019 10:02:00 +0100 https://uniba.sk/ Thursday 21.3.2019 at 9:50, Lecture room C Riste Skrekovski (University of Ljubljana):
Some results on the unique-maximum coloring of plane graphs
Abstrakt:
A unique-maximum coloring of a plane graph is a proper vertex coloring by natural numbers where on each face $\alpha$ the maximal color appears exactly once on the vertices of $\alpha$. Fabrici and G\"oring proved that six colors are enough for any plane graph and conjectured that four colors suffice. Thus, this conjecture is a strengthening of the Four Color Theorem. Wendland later decreased the upper bound from six to five. We first show that the conjecture holds for various subclasses of planar graphs but then we disprove it for planar graphs in general. So, we conclude that the facial unique-maximum chromatic number of the sphere is not four but five. Joint work with Vesna Andova, Bernard Lidicky, Borut Luzar, and Kacy Messerschmidt. ]]> [FMFI] Prednášky a semináre [FMFI] Kalendár Martin.Skoviera@fmph.uniba.sk Tue, 19 Mar 2019 09:35:00 +0100 https://uniba.sk/ Friday 22.3.2019 at 11:00, room M/213 Stefan Dobrev (Matematický ústav SAV):
Exploration of High-Dimensional Grids by Finite State Machines

Abstrakt:
We consider the problem of finding a treasure at an unknown point of an n-dimensional infinite grid, n ≥ 3, by initially collocated finite state agents (scouts/robots). Recently, the problem has been well characterized for 2 dimensions for deterministic as well as randomized agents, both in synchronous and semi-synchronous models. It has been conjectured that n + 1 randomized agents are necessary to solve this problem in the n-dimensional grid. We disprove the conjecture in a strong sense: we show that three randomized synchronous agents suffice to explore an n-dimensional grid for any n. Our algorithm is optimal in terms of the number of the agents. web: https://beda.dcs.fmph.uniba.sk/seminar]]> [FMFI] Prednášky a semináre [FMFI] Kalendár Rastislav.Kralovic@fmph.uniba.sk Tue, 19 Mar 2019 09:28:00 +0100