dr Daniel Strzelecki

Publications & Preprints

• Robert Skiba, Daniel Strzelecki, Nils Waterstraat. An index theorem in relative K-theory for first-order systems. (2026).
  ArXiv
• Bartosz Bieganowski, Daniel Strzelecki. Note on the multiplicity of solutions for nonlinear scalar field equations with a critical inverse-square potential. Anal.Math.Phys., 16(69), (2026).
  DOI ArXiv
• Bartosz Bieganowski, Robert Skiba, Mateusz Topolewski, Daniel Strzelecki. Putnam-like dataset summary: LLMs as mathematical competition contestants. (2025)
  ArXiv
• Bartosz Bieganowski, Pietro d'Avenia, Jacopo Schino, Daniel Strzelecki. A Lichnerowicz equation in the Einstein-scalar field theory on non-CMC closed manifolds. (2025)
  ArXiv
• Bartosz Bieganowski, Daniel Strzelecki. Nonlinear scalar field equations with a critical Hardy potential. (2025)
  ArXiv
• Federico Bernini, Bartosz Bieganowski, Daniel Strzelecki. Note on homoclinic solutions to nonautonomous Hamiltonian systems with sign-changing nonlinear part. Topological Methods in Nonlinear Analysis, 67(1):35--52, (2026).

  DOI ArXiv
• Federico Bernini, Bartosz Bieganowski, Daniel Strzelecki. Multiplicity of critical orbits to nonlinear, strongly indefinite functionals with sign-changing nonlinear part. Calc. Var. Partial Differential Equations, 64(7):Paper No. 234, (2025).
  DOI ArXiv
• Paweł S. Hachaj, Piotr Gierszewski, Włodzimierz Juśkiewicz, Michał Habel, Monika Szlapa, Magdalena Tutro, Daniel Strzelecki, and Michał Kaszubski. The ADDRESS of a Grain: Sediment Particle Tracking as an Approach to Assessing Ecosystem Quality in Dammed Reservoirs. Science of the Total Environment, 957:177511, (2024).
  DOI
• Robert Skiba, Patryk Miziuła, Daniel Strzelecki, Bartosz Bieganowski. Zbiór zadań z analizy i algebry: edycja rozszerzona. Wydawnictwo Aksjomat, Toruń, (2024).
  GET COPY
• Daniel Strzelecki. Bifurcations of quasi-periodic solutions from relative equilibria in the Lennard-Jones 2-body problem. Celestial Mech. Dynam. Astronom., 133(9):Paper No. 44, (2021).
  DOI
• Daniel Strzelecki. Periodic solutions of symmetric Hamiltonian systems. Arch. Ration. Mech. Anal., 237(2):921--950, (2020).
  DOI ArXiv
  Daniel Strzelecki. Correction to: Periodic solutions of symmetric Hamiltonian systems. Arch. Ration. Mech. Anal., 250:71, (2026).
  DOI
• Ernesto Pérez-Chavela, Sławomir Rybicki, Daniel Strzelecki. Symmetric Liapunov center theorem for minimal orbit. J. Differential Equations}, 265(3):752--778, (2018).
  DOI ArXiv
• Ernesto Pérez-Chavela, Sławomir Rybicki, Daniel Strzelecki. Symmetric Liapunov center theorem. Calc. Var. Partial Differential Equations, 56(2):Paper No. 26, (2017).
  DOI ArXiv

Teaching Materials (PL)

Weekly Schedule (PL)

Semestr zimowy 2026/2027

Useful Links

• Projekt mat-ura.pl - jedno zadanie dziennie
• Olimpiada Matematyczna
• Miesięcznik Delta
• Ciekawy kanał na YouTube z rozwiązaniami zadań olimpijskich