10th International Mathematics and Informatics Conference

Distance and critical points


September 8-12, 2025

Târgu Mureş/Marosvásárhely, Romania

Motto:
I created a new, different
world out of nothing.
(János Bolyai)

The aim of the conference is to connect researchers from different countries and different fields of Mathematics and Informatics in a pleasant place of a young and growing university. The topics of the conference include all fields of Mathematics and Informatics.

This conference is organized every two years in the same place, the city where the famous Hungarian mathematician János Bolyai has spent most of his life.

Papers presented at the conference can be submitted for publication in our journal Acta Universitatis Sapientiae Mathematica or Acta Universitatis Sapientiae Informatica.

The topics of this years conference is related to optimizing any kind of distance on algebraic varieties, manifolds, polytopes, etc. Topics will include, but will not be restricted to, the study of algebraic and topological properties of the singularities of the related distance functions, the study of their discriminants, etc.

Besides the invited plenary talks, the registered participants will have the possibility to submit contributed talks, additionally Ph.D. students will have the possibility to submit posters. There will be free accommodation for several Ph.D. students based on a preselection. On Wednesday there will be an excursion organized to visit the town of Sighișoara, which is a popular tourist destination for its well-preserved old town, being listed by UNESCO as a World Heritage Site. In that evening there will be a festive dinner, including a wine tasting at the nearby Castel Haller.

General Info

When: September 8-12, 2025
Where: Sapientia Hungarian University of Transylvania, Faculty of Technical and Human Sciences, Corunca/Târgu-Mureș, Calea Sighișoarei nr. 2
Organized by: Sapientia Hungarian University of Transylvania
Department of Mathematics and Informatics
http://www.ms.sapientia.ro
Contact: mathinfo ms.sapientia.ro



Conference Sponsors

Sapientia Hungarian University of Transylvania

Project “Singularities and Applications” - CF 132/31.07.2023 funded by the European Union - NextGenerationEU - through Romania’s National Recovery and Resilience Plan

                           

Invited Speakers

Mathematics
Zoltán Balogh University of Bern, Switzerland LSI via OMT and curvature
Sandra DiRocco KTH, Stockholm, Sweden Higher order Data Loci
Jan Draisma University of Bern, Switzerland The space of monoid preorders
Antonio Lerario SISSA, Trieste, Italy Testing the Variety Hypothesis
Laurențiu Maxim University of Wisconsin, Madison, USA Linear optimization on varieties and Chern-Mather classes
Matteo Muratori Department of Mathematics of Politecnico di Milano university (Milan, Italy)y Rigidity results and qualitative properties for solutions of the Lane-Emden equation on Cartan-Hadamard (model) manifolds
Paolo Salani UNIVERSITÀ DEGLI STUDI DI FIRENZE Dipartimento di Matematica e Informatica (DIMAI) Concavity Properties of solutions to Elliptic PDEs and related inequalities
Bernd Sturmfels Max Planck Institute, Leipzig, Germany The Likelihood Correspondence
Simon Telen Max Planck Institute, Leipzig, Germany Euler stratifications of hypersurface families
Informatics
Zoltán Gál University of Debrecen, Hungary Technology and scientific aspects of the satellite-based and mobile cellular communication services integration
Krisztián Buza Budapest University of Economics and Business, Hungary Twenty Years of Time Series Classification: From Nearest Neighbors to ROCKETs and Beyond
Mihai Oltean Independent researcher, Cugir, Romania F-Roof: a single-layer multifunction roof
András Pataricza Budapest University of Technology and Economics, Budapest, Hungary Formal methods: the foundation for critical IT applications

Scientific Committee


Margit Antal (Sapientia Hungarian Univ. of Transylvania)  Zoltán Kátai (Sapientia Hungarian University of Transylvania)
László Dávid (Sapientia Hungarian University of Transylvania) Alexandru Kristály (Babeș-Bolyai University, Cluj-Napoca)
József Domokos (Sapientia Hungarian University of Transylvania) Pál Kupán (Sapientia Hungarian University of Transylvania)
Csaba Farkas (Sapientia Hungarian University of Transylvania) Zoltán Makó (Sapientia Hungarian University of Transylvania)
Emil Horobeț (Sapientia Hungarian University of Transylvania) Andrei Mărcuș (Babeș-Bolyai University, Cluj-Napoca)
David Iclanzan (Sapientia Hungarian University of Transylvania) Adrian Petrușel (Babeș-Bolyai University, Cluj-Napoca)
Cezar Joiță (Institutul de Matematică „Simion Stoilow” al Academiei Române (I.M.A.R.)) Róbert Szász (Sapientia Hungarian University of Transylvania)
Zoltán Kása (Sapientia Hungarian University of Transylvania)

Organizing Committee


Chair of the Commitee: Csaba Farkas, Emil Horobeț
Vice chair: David Iclanzan
Secretary: Ibolya Lukács
Technical support: Ágnes Györfi

Margit AntalGyöngyvér Márton
Szabolcs CsaholcziMirtill-Boglárka Naghi
Katalin-Tünde Jánosi-RanczTímea Zsuzsanna Nagy
Zoltán KátaiPálma-Rozália Novák
Zoltán KásaErika Osztián
Lehel KovácsRóbert Szász
Pál Kupán

Accommodation


We would like to offer FREE ACCOMMODATION for several Ph.D. student in our student dormitory, on an application base. To apply please send your CV, publication list and a letter of recommendation from your supervisor to the following e-mail address: mathinfo ms.sapientia.ro. Deadline for this is 31st of May! Extended deadline 13th of July. Soon after the deadline closes we will let you know of the results.

Note that the available rooms have three beds each, so if you have a colleague you are fine to share your room with, then please also let us know of this in your e-mail, sharing the persons name. In the case of two or more students willing to share their room, their application is almost surely accepted!

Other participants can also opt for our student housing, where the price is 135 RON/room/day. Let us know about this till the 31st of May. Extended deadline 13th of July.

More accommodation possibilities are:

Vila Cheșa guesthouse *** close to the Campus https://vilachesa.ro/en/
Sandoria Hotel *** close to the Campus https://hotelsandoria.ro/en/
Business Hotel *** close to the Campus https://v.hotel-business.ro/

Travel


To Cluj-Napoca (we will organize shuttle transport to the conference venue)

  • By plane: from Bucharest (1 hour) or from more than 40 destinations

To Târgu-Mureș

  • By plane: from Budapest (WizzAir every second day, 1 hour)
  • By train: from Budapest via Oradea (12 hours), from Bucharest (7 hours)
  • By car: from Budapest via Oradea (560 km; 7 hours), from Bucharest via Brașov (350 km, 5 hours)

Program

Mathematics – program.pdf
Informatics – program.pdf




Registration


The registration fee is 500 RON (or 100 EUR equivalently), for every participant, with the exception of the invited speakers.
This amount covers three meals per day during the conference for the participant.
To be paid at the Conference Registration Desk, or by international bank transfer to:
Universitatea Sapientia P.L Corunca Adr. Corunca 1/C
CF: 14645945 Banca OTP Tg.Mures
IBAN: RO42BTRLRONCRT0039221821 (RON)
IBAN: RO03BTRLEURCRT0039221817 (EUR)
Swift: BTRLRO22
https://payments.sapientia.ro/en/BFRXB4 (only in RON)

Participants

Margit Antal (Sapientia Hungarian University of Transylvania, Romania) Benchmarking Open-Source LLMs in RAG Systems with Diploma Abstracts
Zoltan Balogh (University of Bern, Switzerland ) LSI via OMT and curvature
Andi Brojbeanu (Babes-Bolyai University, Romania)
Krisztian Buza (Budapest University of Economics and Business, Hungary) Twenty Years of Time Series Classification: From Nearest Neighbors to ROCKETs and Beyond
Carles Checa (University of Copenhagen, Denmark) an effective criterion for multiple positive solutions of vertically parametrized polynomial systems
Erin Connelly (Univeristy of Osnabrück, Germany)
Szabolcs Csaholczi (Sapientia Hungarian University of Transylvania, Romania) Optimized U-Net Architecture with Residual and Attention Blocks for Multi-Class Tumor Segmentation
Maria Csernoch (University of Debrecen, Hungary) Problem-Solving Strategies and Wastes in Digital Text Management
Rolland-Zsombor Csiszér (Sapientia Hungarian University of Transylvania, Romania) Embedding Models for Hungarian Chatbots: Retrieval Performance and Efficiency Analysis
Nágó Dániel (Sapientia Hungarian University of Transylvania, Romania) Gamification of Examination: A New Method and Tool in the Spirit of "Who Wants to Be a Millionaire?"
Zsolt Darvay (Babes-Bolyai University, Romania) Predictor-corrector interior-point algorithm with two different classes of algebraically equivalent transformations
Clara Dérand (University of Lorraine, France)
Dániel Derzsi (Sapientia Hungarian University of Transylvania, România) Automated Dependency Resolution in Container Orchestration
Sandra DiRocco (KTH, Sweden) Higher order Data Loci
Mátyás Domokos (HUN-REN Alfréd Rényi Institute of Mathematics, Hungary) Separating invariants for real representations of abelian groups
Jan Draisma (University of Bern, Switzerland) The space of monoid preorders
Rob Eggermont (Eindhoven University of Technology, The Netherlands)
Csaba Farkas (Sapientia Hungarian University of Transylvania, Romania) Singular (N,p)-Lapacian equation on Riemannian manifolds.
István Fazekas (University of Debrecen, Hungary) Convergence rate for the longest at most T-contaminated runs of heads
Levente Filep (Sapientia EMTE, Romania) Performance Evolution of Swarm Intelligence Algorithms
Valerian-Alin Fodor (Babes-Bolyai University, Romania, Romania) Inverse Images of Relative Interiors through Metric Projections in Hilbert Spaces
László Fórián (University of Debrecen, Hungary) A family of network evolution models with moderate density
Zoltán Gál (Faculty of Informatics, University of Debrecen, Hungary) Technology and scientific aspects of the satellite-based and mobile cellular communication services integration
Ádám Gulácsi (University of Debrecen, Hungary) Games and algorithms: a co-operative board game for teaching elementary algorithms
Ágnes Györfi (Sapientia Hungarian University of Transylvania, Romania)
Lóránt Hadnagy (Sapientia Hungarian University of Transylvania, Romania) Algorithmic Expression of Tensor Operations in Iversonian Languages
Emil Horobeț (Sapientia Hungarian University of Transylvania, Romania) The generalization of modern portfolio theory in the context of parametric polynomial systems
David Iclanzan (Sapientia EMTE, ROMANIA) Forensics and Feedback at Scale for Digital Assignments
Nidhi Kaihnsa (University of Copenhagen, Denmark) Optimisation in Polyhedral Norms
Sándor Kajántó (Babeș–Bolyai University, Romania) Sharp Hardy-type inequalities on special irrevesible Finsler manifolds
Zoltán Kátai (Sapientia Hungarian University of Transylvania, Romania) The Sapientia ECN AI Baseline Index: Comparing LLMs to Student Performance in Competitive Programming
Janosi-Rancz Katalin Tunde (Sapientia EMTE, Romania)
Nikhil Ken (University of Florence, Italy)
József Kolumbán (Budapest University of Technology and Economics, Hungary) Estimating the convex relaxation of the ideal magnetohydrodynamics equations
Lehel-Levente Kovacs (University of Babeș–Bolyai, Romania)
Bence Kovács (Sapientia Hungarian University of Transylvania, Romania) Investigation and Application of Traveling Salesman Algorithms in Urban Route Planning
Khazhgali Kozhasov (Université Côte d'Azur, France) Minimal Euclidean Distance degree of Segre-Veronese varieties
Alexandru Kristaly (Babes-Bolyai University, Romania) Sharp Sobolev inequalities on Riemannian manifolds with nonnegative Ricci curvature
Pál Kupán (EMTE Sapientia, Ro)
Ioana-Claudia Lazar (Politehnica University of Timisoara, Romania)
Antonio Lerario (SISSA, Trieste, Italy) Testing the Variety Hypothesis
Rodica Ioana Lung (Babes-Bolyai University, Romania) Identifying Fat-Tailed Distributions: Methods and Insights
Zoltan Makó (Sapientia Hungarian University of Transylvania, Romania) The general form of intuitionistic fuzzy preference-homogeneous value functions
Giacomo Maletto (KTH, Sweden) Varieties whose generic affine normal space is normal to more than one point
Gyongyver Marton (EMTE Sapientia, Romania) Observations on the impact of AI on cryptography
Laurentiu Maxim (University of Wisconsin-Madison, USA) Linear optimization on varieties and Chern-Mather classes
Cristian Mihăescu (University of Craiova, Romania)
Roland Botond Miklósi (Eötvös Loránd University, Hungary) On degenerations of matrix tuples
Matteo Muratori (Politecnico di Milano, Italy) Rigidity results and qualitative properties for solutions of the Lane-Emden equation on Cartan-Hadamard (model) manifolds
Mirtill - Boglárka Naghi (Sapientia Hungarian University of Transylvania, Romania, Romania) Self-Tuning Clustering: Toward Automated Parameter Optimization in Fuzzy C-Means Clustering Models
Pálma Rozália Novák (Osztián) (Sapientia Hungarian University of Transylvania, Romania)
Mihai Oltean (Independent Researcher, Romania) F-Roof: a single-layer multifunction roof
Erika Osztián (Sapientia Hungarian University of Transylvania, Romania) From Dance to Code: A 20-Year Journey
László Pál (Sapientia Hungarian University of Transylvania, Romania) Index Tracking Portfolio Construction with Sector Weight and Turnover Constraints
Adam Parusinski (Université Côte d'Azur, France)
András Pataricza (Budapest University of Technology and Economics, Budapest, Hungary) Formal methods: the foundation for critical IT applications
Laurentiu Paunescu (The University of Sydney, Australia)
Cornel Pintea (Babes-Bolyai University, Romania)
Miklos Pinter (Corvinus, Hungary) Maximal complete algebras
Paul Stefan Popescu (University of Craiova, Romania)
Isaac Ren (KTH Royal Institute of Technology, Sweden) Morse theory of distance functions between algebraic varieties
Petra Renáta Rigó (Corvinus University of Budapest, Hungary) Parabolic target space interior-point algorithm for monotone linear complementarity problems
Paolo Salani (University of Florence , Italy) Concavity Properties of solutions to Elliptic PDEs and related inequalities
Fahad Sarwar (Government College University Lahore (GCUL), Pakistan)
Barna Schefler (Eötvös Loránd University, Hungary) Computing degree bounds for separating invariants of actions of finite groups
Dirk Siersma (Universiteit Utrecht, The Netherlands) Distance and critical points on PL-manifolds
Luca Sodomaco (Max Planck Institute for Mathematics in the Sciences, Germany) Higher-order Osculating Eigenvectors of Symmetric Tensors
Bernd Sturmfels (MPI Leipzig, Germany) The Likelihood Correspondence
Svala Sverrisdottir (University of California, Berkeley, United States)
Máté Telek (MPI MiS, Germany) Copositive geometry and positive A-discriminants
Simon Telen (MPI MiS, Germany) Euler stratifications of hypersurface families
Rodrigo Thomaz da Silva (Université de Lille, France)
Ioan-Adrian Tofan (Universitatea Babeș-Bolyai (UBB), Romania)
Cristina Andreea Tomoiu (University of Craiova, Romania) Automatic AI Detection for Romanian Language
Monica Emilia Văruicu (University of Craiova, Romania) Automatic Detection of Core Sections in Scientific Papers
Tianyu Xu (Babes-Bolyai University, Romania)

Connected Events


The week before the conference (September 1-5, 2025), there will be a Research School on Singularities and Applications to Optimization in Bucharest, designated for Ph.D. students where Emil Horobeț, Cezar Joiță, Khazhgali Kozhasov, Laurențiu Maxim, and Mihai Tibăr will give lectures on related topics. Here is the website for it: https://sites.google.com/view/singularitiesandapplications/accueil.