To each and one of our students, emplyees, and friends - very happy Christas AD 2025 and a fruitful and satisfying New Year 2026!

We are announcing a competition for a postdoctoral position (assistant professor) in Sonata Bis “Elliptic geometric variational problems” research project, funded by the National Science Centre, Poland (2022/46/E/ST1/00328). Principal investigator: dr hab. Sławomir Kolasiński.

To apply for the position, the candidate should send an e-mail entitled "POST-DOC – SONATA BIS" to: s.kolasinski@mimuw.edu.pl, attaching the required documents in PDF file format, by 21 January, 2025.

The public defence of the doctoral dissertation will take place on 16 January 2026 at 09:00 AM in room 2180 (sala RW) in the building of the MIMUW Faculty at 2 Banacha Street, Warsaw.

Title of the dissertation: Regular Path Queries and Modal Constraints: Decidability of Query Containment under a Graph Database Schema
Supervisor: Assoc. Prof. Filip Murlak (University of Warsaw)

We warmly invite you to come and see at our Facult's Library two Christmas exhibitions:

• "Levitating Christmas tree" by dr Barbara Poszewiecka
  and
• MS Paint Art works entitled „Wesołych świąt! (Przepraszam za to, ale koledzy się uparli)” (eng.: "Merry Christmas! (Sorry about that, but my friends insisted)"), by Kamil Olszewski.

The remote online public defence of the doctoral dissertation will take place on 29 January 2026 at 10:00 AM .

Title of the dissertation: Khovanov-Rozansky slN-homology for periodic links
Supervisor: Assoc. Prof. Maciej Borodzik (University of Warsaw)
Assistant supervisor: Ph.D. Wojciech Politarczyk (Univeristy of Warsaw)

The link to the defence meeting will be made available after prior registration by e-mail rnd.mat@uw.edu.pl. The registration of participants will be until 9:00 AM on 28th January 2026.

On behalf of the Dean's team, I cordially invite the entire community of the Faculty of Mathematics, Informatics, and Mechanics at the University of Warsaw: employees, retirees, doctoral candidates, and students, to the Faculty Christmas Tree Party. As usual, we will listen to a performance by the Faculty Choir.

Date and location: Thursday, December 18, 2025, at 3:30pm, room 4420.

See you soon!

Łukasz Kowalik
Dean