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/ Tuesday 8.4.2025 at 14:00, Lecture room F2/125 Mgr. Andrej Gendiar, PhD. (Institute of Physics SAS, Research Center for Quantum Information):
Entanglement in Tensor Networks
Abstract:
Tensor Networks are special classes of variational quantum states typically applied to study strongly correlated many-body systems. They were developed to calculate ground and excited states of higher-dimensional systems originating in the one-dimensional matrix product states (equivalent to the density matrix renormalization group). We aim to explain their mathematical background rooted in maximizing quantum entanglement. We show the main principles in the simplest examples. Due to a so-called quantum-classical correspondence (imaginary time evolution), we analyze two identical representations of the Tensor Networks: 1) the vertex representation (commonly used in the quantum states) and 2) the weight representation (well-known from classical statistical mechanics). We explain two-dimensional classical spin models exhibiting equivalent partition functions. Although the equivalency of all observables and correlations for both representations, entanglement entropy is always lower for the vertex representation of the Tensor Networks for finite and infinite systems, irrespective of the spin-lattice model, the number of spin degrees of freedom, and the underlying lattice geometry. We consider various types of tensor networks to investigate why the discrepancy persists within all phase-transition types generated in a wide range of spin Hamiltonians. ]]> [FMFI] Prednášky a semináre [FMFI] Kalendár Peter.Matak@fmph.uniba.sk Tue, 01 Apr 2025 14:29:00 +0200 https://uniba.sk/ 28 March 2025, Faculty of Law, CU On Friday, 28 March 2025, the Dean of the Faculty of Law, Eduard Burda, and the management of the company Poradca podnikateľa, the company that operates the EPI information system, signed two important documents that will enable students and the professional public to advance their knowledge in the field of law. The first document refers to the LAWtalks educational format in collaboration with our faculty. Starting in May this year, users of the successful format known as LAWtalks can enjoy a professional networking with the Faculty of Law, Comenius University. Until the end of the academic year, the new episodes will be prepared by a well-known team: Dr Soňa Surá and Dr Daniel Ivanko, who are judges and both teach at our faculty. From the new academic year, we are preparing new topics and new teams. We are looking forward to new topics and teams. The agreement also provides free use of the EPI Smart information system for the faculty’s lecturers and students, who can thus use a unique information system that enables smooth sorting and searching in data with legal content. ]]> [PraF] Titulka - úzke novinky - z uniba.sk [PraF] Súkromný sektor spolupráca [PraF] EN Titulka - úzke novinky Wed, 02 Apr 2025 10:27:00 +0200 https://uniba.sk/ Thursday 3.4.2025 at 9:50, Lecture room M 213 Matúš Matok:
(Mostly) total colouring of (sub)cubic Halin graphs Abstract:
A Halin graph is a planar graph consisting of a tree and an additional cycle connecting all the leaves in such manner that no two edges are crossing. We will be interested in (sub)cubic Halin graphs. Total colouring of a graph is a mapping from the set of vertices and edges to a set of colours such that no two neighbouring objects receive the same colour. We will be (mostly) talking about total colouring, but we will also briefly mention two very related colourings, namely AVD-colouring and SND-colouring. As there were only 3 known cubic Halin graphs with total chromatic index greater than 4, a natural open question was informally posed by Borut Lužar on whether the number of such graphs is finite. We managed to prove that the set of cubic Halin graphs with total chromatic index greater than 4 is finite, containing only the cubic Halin graphs known before-hand. By a slight modification of our approach, we managed to establish similar results for total and AVD-colouring of subcubic Halin graphs. Lastly, we observed that the set of subcubic Halin graphs with SND-chromatic index greater than 4 is infinite and its precise characterisation is currently a work in progress. More information]]> [FMFI] Prednášky a semináre [FMFI] Kalendár Martin.Skoviera@fmph.uniba.sk Mon, 31 Mar 2025 12:54:00 +0200 https://uniba.sk/ Monday 31.3.2025 at 13:10, Lecture room I/9 Marek Šuppa:
One Year Later: Did LLMs Solve Multilingual NLP or (Simply) Redefine the Problem?
Abstract:
The continued proliferation and advancement of Large Language Models (LLMs) over the past year, marked by releases like Claude 3.7 Sonnet, Gemini 2.5 Pro, GPT-4o, Grok 3 and Llama 3, have further solidified their transformative impact on Natural Language Processing. Tasks once considered challenging are frequently handled with remarkable proficiency. Concurrently, a significant focus has emerged on enhancing reasoning capabilities, exemplified by models such as OpenAI's o3 series and DeepSeek-R1. Despite these strides, the initial observation persists: impressive performance, often benchmarked in English, raises questions about equitable capabilities across the linguistic spectrum, particularly for less-resourced languages. This presentation revisits the state-of-the-art, specifically asking whether LLMs have truly 'solved' multilingual NLP or if their primary effect has been to redefine the challenges. We will examine the tangible progress observed for languages like Slovak, where new models and dedicated resources have yielded notable improvements, suggesting a brighter outlook, potentially including Slovak-specific models. Our recent findings evaluating these newer LLMs on (not only) Slovak tasks will be presented, illustrating both advancements and persistent gaps. Ultimately, we argue that while LLM capabilities are undeniable, the multilingual NLP problem is far from solved; rather, it has been reshaped, demanding new evaluation paradigms, focus on lower-resource languages, and nuanced approaches beyond simple capability scaling. More information ]]> [FMFI] Prednášky a semináre [FMFI] Kalendár Damas.Gruska@fmph.uniba.sk Fri, 28 Mar 2025 21:58:00 +0100 http://www.fm.uniba.sk/en/about-faculty/akcie-organizovane-na-fm/erasmus-program-is-also-for-teachers-and-staff-exchanges/ March was a month full of interesting and significant activities for our International Department. [FM] Titulka - úzke novinky Fri, 28 Mar 2025 15:19:00 +0100 https://uniba.sk/ As part of integration activities for Comenius University students, the Department of International... [RUK] Spravodajský portál Pre študentov [RUK] Titulka - úzke novinky [FM] Titulka - úzke novinky [FM] Titulka - široké novinky pr@uniba.sk Tue, 01 Apr 2025 10:28:00 +0200 https://uniba.sk/ We invite you to a guest lecture taking place on Thursday, April 3, 2025, from 12:30 PM to 2:30... Organizational Culture in Dynamic and Technology-Driven Environments. The lecture will be delivered by Philip Reisberger and Tobias Reisberges – successful long-time entrepreneurs and our external PhD students. The lecture will be held online. The access link will be sent to teachers and students one day in advance. The lecture will be conducted in English. For more information: Assoc. Prof. PhDr. Lukáš Copuš, PhD. – Department of Management]]> [FM] Kalendár Thu, 27 Mar 2025 15:36:00 +0100 http://www.fpharm.uniba.sk/en/education/bakalarske-studium/ [Translate to English:] Riadny termín štátnej skúšky študijného programu zdravotnícke a... [FaF] Titulka - široké novinky [FaF] Kalendár Mon, 15 Dec 2025 14:48:00 +0100 https://uniba.sk/ Wednesday 2.4.2025 at 14:00, Lecture room F1/364 RNDr. Marek Hupian (Department of Nuclear Chemistry Faculty of Natural Sciences CU):
Validation of spectrophotometric method for Ni-63 activity determination in radioactive waste Abstract:
Radiochemical analysis plays a crucial role in environmental monitoring, nuclear facility decommissioning, and radioactive waste processing. Ni-63 is an activation product with a relatively long half-life and is classified as a difficult-to-measure radionuclide. Traditional separation methods for activity determination of such radionuclides are often time-consuming and resource-intensive. The presented results demonstrate the validation of a spectrophotometric method that replaces conventional gravimetric yield determination, significantly reducing the total analysis time and chemical consumption. By combining ion-exchange and extraction chromatography with cuvette-based spectrophotometric yield measurement and liquid scintillation counting, the accurate activity of Ni-63 was determined in both a certified reference material and radioactive waste. The method was validated using NPL-certified material and subsequently applied to a real sample of radioactive waste leachate. Compared to gravimetry, the method resulted in approximately 80% time savings while maintaining comparable accuracy.]]> [FMFI] Prednášky a semináre [FMFI] Kalendár Jaroslav.Stanicek@fmph.uniba.sk Thu, 27 Mar 2025 10:00:00 +0100 https://uniba.sk/ Comenius University Bratislava and the United States Sports University (USSU) officially launched... Financed by European union NextGenerationEU]]> [RUK] Titulka - úzke novinky [RUK] Tlačové správy [FTVS] Titulka - Trvalky pr@uniba.sk Wed, 02 Apr 2025 15:14:00 +0200