Birational geometry and elliptic cohomology invariants

financed in 2023-2027 by Polish National Science Center grant number 2022/47/B/ST1/01896

Researchers Andrzej Weber Jaroslaw Wisniewski Popular blurb

Publications

• Andrzej Weber, Magdalena Zielenkiewicz, A note on the push-forward formulas for even orthogonal Grassmannians Fundamenta Mathematicae 266, 263-274 (2024).
• Andrzej Weber, Link patterns and elliptic Hecke algebra, (preprint, 2024)
• Jakub Koncki, Andrzej Weber, Hecke algebra action on twisted motivic Chern classes and K-theoretic stable envelopes, Mathematische Annalen 391, 1899-1964 (2025).
• Andrzej Weber, Four paths from birational geometry to the elliptic genus, (preprint 2025).
• Gianluca Occhetta, Eleonora A. Romano, Luis E. Sola Conde, Jaroslaw A. Wisniewski, Chow quotients of C* actions, International Mathematics Research Notices, Vol. 2025, Issue 12, (2025).

Conference slides

• Birational geometry via C* actions, Beijing 2024.
• Two elephants (almost) imply LeBrun-Salamon conjecture, Bedlewo 2024.
• C* quotients of varieties with big torus action, Innsbruck 2024.

Previous projects

• Algebraic Geometry: Varieties and Structures
• Algebraic Torus Action: Geometry and Combinatorics