2–4 Apr 2025
University of Stavanger, Norway
Europe/Oslo timezone

Laurent polynomials and deformations of non-isolated Gorenstein toric singularities

4 Apr 2025, 15:30
1h
02.04. Kjølv Egelands hus KE E-264; 03.04. Kjell Arholms hus KA U-136; 04.04. Kjølv Egelands hus KE A-202 (University of Stavanger, Norway)

02.04. Kjølv Egelands hus KE E-264; 03.04. Kjell Arholms hus KA U-136; 04.04. Kjølv Egelands hus KE A-202

University of Stavanger, Norway

Both buildings you find on Ullandhaug Campus: Kjølv Egelands hus: Kristine Bonnevies vei 22 Mazemap link to KE E-264: https://link.mazemap.com/StCpOfWl Kjell Arholms hus: Telegrafdirektør Heftyes vei 73 Mazemap link to KA U-134: https://link.mazemap.com/fkyDnR8T Mazemap link to KE A-202: https://link.mazemap.com/WQ2WNkz4 Lunch will be served at our new SIS building, next to Kjølv Egelands hus. Link below is for the room on the first day:

Speaker

Prof. Matej Filip

Description

We establish a correspondence between one-parameter deformations of an affine Gorenstein toric variety X, defined by a polytope P, and mutations of a Laurent polynomial f, whose Newton polytope is equal to P. If the Newton polytope P of f is two dimensional and there exists a set of mutations of f that mutate P to a smooth polygon, then, we show that the Gorenstein toric variety, defined by P, admits a smoothing. This smoothing is obtained by proving that the corresponding one-parameter deformation families are unobstructed and that the general fiber of this deformation family is smooth.

Presentation materials

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