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 Thu, 31 Dec 2026 00:00:00 +0100 https://uniba.sk/ Bratislava, 14 October 2021: The new Centre of Active Ageing at Comenius University Bratislava... The Centre of Active Ageing is a part of the Faculty of Physical Education and Sports of Comenius University. It is staffed by experts from the faculty and includes a practice of a sports physician. Seniors receive individual treatment and the goal of the centre is to improve their physical fitness and general health. The facilities include a mobility training room, a specialised weight-lifting gym and a swimming pool. The centre is fully accessible for people with reduced mobility. "Most modern-day fitness centres are full of young, sporty people. Rather than attracting senior citizens, they have a discouraging effect on them. It is our ambition to ensure that our centre offers a friendly environment in which experienced instructors provide guidance in the form of exercise programmes adapted to the needs of older adults, including people with disabilities," says the project’s sponsor, Professor Dušan Hamar. "Our ambition is to use the centre to educate about a healthy lifestyle and to promote appropriate forms of physical activity which can improve the general health and increase the quality of life of our elderly citizens," he adds. According to the centre’s experts, regular physical activity acts as prevention. It has a positive effect on one's health, mobility and independence, while also boosting one's self-respect and cognitive functions. Activity also mitigates chronic musculoskeletal pain, minimizes the risk of cardiovascular diseases and reduces both direct and indirect health care expenditures. In addition to physical activities, the centre offers educational programmes focusing on the management of physical activity at home, the nutrition of seniors, on social services and geriatric care. "Both the WHO and the Slovak National Programme for the Promotion of Health emphasize the importance of physical activity of seniors. I am pleased that the first centre of this kind in the region was established at Comenius University. I am also glad that our senior citizens now have the opportunity to follow coordinated programmes under the supervision of our qualified experts," said the Rector of Comenius University Marek Števček. The project is co-financed by the European Regional Development Fund under INTERREG V-A, the cross-border cooperation programme between Slovak Republic and Austria.]]> [RUK] Tlačové správy [RUK] Tlačové správy EN [RUK] Kalendár [RUK] Titulka - úzke novinky pr@uniba.sk Fri, 15 Oct 2021 13:46:00 +0200 https://uniba.sk/ Friday 15.10.2021 at 13:00, Lecture room M X or online Martin Mačaj:
Doing AGT with computers (part II) MS Teams (AGT in Bratislava team, scheduled meeting)
Abstract:
We will show which mathematical objects can be used in GAP. Thanks to (temporary?) loosening of restrictions regarding the COVID epidemy, we intend to conduct the seminar meetings this semester `in-person'. Hence, all of you who might choose to attend in person are welcome. Those of you who are not able to attend in person or who are still uncertain about the safety of attending in person are welcome to attend via MS Teams. In either case, we hope to see as many of you as possible (either in person or virtually) at our Friday gatherings.]]> [FMFI] Prednášky a semináre [FMFI] Kalendár Martin.Macaj@fmph.uniba.sk Thu, 14 Oct 2021 08:33:00 +0200 https://uniba.sk/ Bratislava, 13 October 2021: Today, Comenius University Bratislava hosted Kip S. Thorne, the... John Wheeler, as well as Rainer Weiss, Ronald Drever and Barry Barish who were his team-mates on the LIGO project. Professor Thorne works on the theory of “wormholes”, which could theoretically enable time travel in a warped universe. This theory may be a mere speculation at the moment but future could bring changes. "When I was a student, 59 years ago, we speculated a lot about the black holes and gravitational waves. Today we have observed the black holes, we have observed gravitational waves and we expect to see gravitational waves from the Big Bang soon. We doubt that wormholes exist and we doubt that backward time travel is possible. But in the future the gravitational waves will reveal in greater detail the warped side of the universe and then we might understand what we only speculated about fifty-nine years ago," said Professor Thorne. The Rector of Comenius University then awarded the University’s highest accolade to him. "It is an honour for me to acknowledge Professor Thorne's excellent research, but also his teaching, the popularization of science, which led him to swap his profession of a physicist for that of an actor temporarily, his contributions towards the popularisation of science in Slovakia in general and at our university in particular, as well as his leadership in the LIGO experiment, by awarding to him the Grand Gold Medal of Comenius University,“ said the Rector of Comenius University Marek Števček when presenting the Medal. The event was organised jointly by Comenius University Bratislava and ESET Foundation.]]> [RUK] Titulka - úzke novinky [RUK] Tlačové správy [RUK] Tlačové správy EN pr@uniba.sk Mon, 18 Oct 2021 15:25:00 +0200 https://uniba.sk/ Thursday 14.10.2021 at 9:50, Lecture room M/213 František Kardoš:
Subcubic planar graphs of girth 7 are class I
Abstrakt:
We prove that planar graphs of maximum degree 3 and of girth at least 7 are 3-edge-colorable, extending the previous result for girth at least 8 by Kronk, Radlowski, and Franen from 1974. This is a joint work with Sebastien Bonduelle.  
More information ]]> [FMFI] Prednášky a semináre [FMFI] Kalendár Martin.Skoviera@fmph.uniba.sk Tue, 12 Oct 2021 15:12:00 +0200 http://fileadmin/jlf/PR/oznamy/2021/10/dekanske_volno_-_imatrikulacia_2021_AJ.pdf to all 1st year students of JFMED CU [JLF] Titulka - široké novinky Tue, 12 Oct 2021 13:37:00 +0200 https://uniba.sk/ Bratislava, 12 October 2021: Last week, a three-way meeting took place at Comenius University in... [RUK] Tlačové správy [RUK] Tlačové správy EN [RUK] Titulka - úzke novinky [Mlyny] Titulka - úzke novinky pr@uniba.sk Wed, 13 Oct 2021 08:15:00 +0200 https://uniba.sk/ Tuesday 12.10.2021 at 10:00 hod. October 12, 2021, at 10am Central European Summer Time (= 8am UTC = 7pm ACT), for the next presentation delivered by Brian Alspach.  The title of Martin's talk: Exploring F(1,2)-invariant graphs Abstract:
A trivalent vertex-transitive graph X is F(1,2)-invariant if it admits a partition of its edge set into a 2-factor F and a 1-factor I such that the partition is invariant under the automorphism group of X. We describe the F(1,2)-invariant graphs whose 2-factor is either a single cycle or composed of two cycles. We also mention some possible future directions one might take.  Join Zoom Meeting at https://uni-lj-si.zoom.us/j/92545586220?pwd=Vjc4cytxaVBFbFJXY0Q4L2RhOUZHZz09
Meeting ID: 925 4558 6220
Passcode: 117532

Further details may be found at http://euler.doa.fmph.uniba.sk/AGTIW.html where you can also find the slides and the recordings of our previous presentations. Also, if you wish to advertise an AGT friendly conference on this page, please send us the link.   Hoping to see you at the webinar, and wishing you all the best.  This is the first talk of the webinar after the summer in the Northern Hemisphere, and the plan is to continue on a bi-weekly basis from now on. It is time to be AGTIW again.  Isabel Hubard, Robert Jajcay and Primoz Potocnik]]> [FMFI] Prednášky a semináre [FMFI] Kalendár Robert.Jajcay@fmph.uniba.sk Mon, 11 Oct 2021 16:44:00 +0200 https://uniba.sk/ Friday 22.10.2021 at 15:30, Lecture room C (online too) Peter Richtárik (KAUST, Computer and Mathematical Science and Engineering Division):
EF21: A New, Simpler, Theoretically Better, and Practically Faster Error Feedback Lecture room C, FMFI UK (mode - vaccinated ) or on-line  MS Teams
Abstract:
Error feedback (EF), also known as error compensation, is an immensely popular convergence stabilization mechanism in the context of distributed training of supervised machine learning models enhanced by the use of contractive communication compression mechanisms, such as Top-k. First proposed by Seide et al (2014) as a heuristic, EF resisted any theoretical understanding until recently [Stich et al., 2018, Alistarh et al., 2018]. However, all existing analyses either i) apply to the single node setting only, ii) rely on very strong and often unreasonable assumptions, such global boundedness of the gradients, or iterate-dependent assumptions that cannot be checked a-priori and may not hold in practice, or iii) circumvent these issues via the introduction of additional unbiased compressors, which increase the communication cost. In this work we fix all these deficiencies by proposing and analyzing a new EF mechanism, which we call EF21, which consistently and substantially outperforms EF in practice. Our theoretical analysis relies on standard assumptions only, works in the distributed heterogeneous data setting, and leads to better and more meaningful rates. In particular, we prove that EF21 enjoys a fast O(1/T) convergence rate for smooth nonconvex problems, beating the previous bound of O(1/T2/3), which was shown using a (limiting) bounded gradients assumption. We further improve this to a fast linear rate for PL functions, which is the first linear convergence result for an EF-type method not relying on unbiased compressors. Since EF has a large number of applications where it reigns supreme, we believe that our 2021 variant, EF21, can have a large impact on the practice of communication efficient distributed learning. Peter Richtarik is a professor of Computer Science at the King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia, where he leads the Optimization and Machine Learning Lab. Prior to joining KAUST, he was an Associate Professor of Mathematics at the University of Edinburgh, and held postdoctoral and visiting positions at Université Catholique de Louvain, Belgium, and University of California, Berkeley, USA, respectively. He received his PhD in 2007 from Cornell University, USA, and before this, an MS degree in Mathematics in 2001 from Comenius Unviersity, Slovakia. Prof Richtarik’s research interests lie at the intersection of mathematics, computer science, machine learning, optimization, numerical linear algebra, and high-performance computing. Prof Richtárik’s works attracted international awards, including a Best Paper Award at the NeurIPS 2020 Workshop on Scalability, Privacy, and Security in Federated Learning (joint with S. Horvath), Distinguished Speaker Award at the 2019 International Conference on Continuous Optimization, SIAM SIGEST Best Paper Award (joint with O. Fercoq), and the IMA Leslie Fox Prize (second prize, three times, awarded to two of his students and a postdoc). ]]> [FMFI] Prednášky a semináre [FMFI] Kalendár Tomas.Vinar@fmph.uniba.sk Fri, 08 Oct 2021 20:53:00 +0200 https://uniba.sk/ Tuesday 19.10.2021, at 14:00 hod., Lecture room F2/125 Amina Khatun:
Exploring long-range force of Lµ − Lτ Symmetry using Atmospheric Neutrino Experiment
Abstract: 
Flavor-dependent long-range leptonic force mediated by an ultralight and neutral gauge boson $Z'$ associated with $L_\mu -L_\tau$ symmetry constitutes a minimal extension of the Standard Model. We study the physical consequences of such long-range force in the oscillation of terrestrial neutrinos, particularly in $\nu_\mu$ survival channel. We show that the proposed atmospheric neutrino detector ICAL will be able to put tight constraints on such long-range force due to its capabilities of detecting neutrinos and antineutrinos separately with the wide ranges of energies and baselines. We also study the possible impact of this long-range force in the measurement of atmospheric neutrino oscillation parameters and mass ordering at the ICAL. ]]> [FMFI] Prednášky a semináre [FMFI] Kalendár Peter.Matak@fmph.uniba.sk Fri, 08 Oct 2021 20:33:00 +0200 https://uniba.sk/ Wednesday 13.10.2021 at 15:00, Lecture rook F1/364 (online too) Dr. Larisa Thorne, PhD. (Institute of Physics, Johannes Gutenberg University Mainz):
Towards an improved neutrino mass, with the KATRIN and Project8 experiments MS Teams 

Abstract:
The Karlsruhe Tritium Neutrino (KATRIN) experiment aims to make a precision measurement of the effective neutrino mass by leveraging the kinematics of tritium beta decay, with a 3-year sensitivity of 0.2eV (90% C.L.). Recent run campaigns, both in standard mode (using molecular tritium) and calibration mode (using 83mKr), have provided a wealth of data. This data was analyzed using the CMKAT analysis framework, which models the integrated spectra using a convolution of the source decay physics and the experiment’s response function. Results from fits to the second neutrino mass measurement campaign (KNM2) are presented, and confidence intervals on the extracted effective neutrino mass are constructed. Finally, the physics reach of the KATRIN experiment is put into context by comparison to a successor neutrino experiment, Project8, which is currently under construction. ]]> [FMFI] Prednášky a semináre [FMFI] Kalendár Jaroslav.Stanicek@fmph.uniba.sk Fri, 08 Oct 2021 20:21:00 +0200