Tutorial on Tom and Jerry: The two smoothings of the anticanonical cone over P(1; 2; 3)
Artikel i vetenskaplig tidskrift, 2021

This is a first introduction to unprojection methods, and more specifically to Tom and Jerry unprojections. These two harmless tricks deserve to be better known, since they answer many practical questions about constructing codimension 4 Gorenstein subschemes. In particular, we discuss here the two smoothing components of the anticanonical cone over P.1; 2; 3/.

Unprojection

Deformations

Codimension 4 Gorenstein ring

Pfaffians

Författare

Gavin Brown

The University of Warwick

Miles Reid

The University of Warwick

Jan Stevens

Chalmers, Matematiska vetenskaper, Algebra och geometri

Göteborgs universitet

EMS Surveys in Mathematical Sciences

23082151 (ISSN) 2308216X (eISSN)

Vol. 8 1 25-38

Ämneskategorier

Etnologi

Geometri

Kulturstudier

DOI

10.4171/EMSS/43

Mer information

Senast uppdaterat

2021-09-22