Title
Inverse systems, Gelfand-Tsetlin patterns and the weak Lefschetz property
Abstract
In a recently published paper [Trans. Amer. Math. Soc. 363 (2011) 229-257], Migliore, Miro-Roig and Nagel show that the weak Lefschetz property (WLP) can fail for an ideal I subset of K[x(1),..., x(4)] generated by powers of linear forms. This is in contrast to the analogous situation in K[x(1), x(2), x(3)], where WLP always holds [H. Schenck and A. Seceleanu, Proc. Amer. Math. Soc. 138 (2010) 2335-2339]. We use the inverse system dictionary to connect I to an ideal of fat points, and show that the failure of WLP for powers of linear forms is connected to the geometry of the associated fat point scheme. Recent results of Sturmfels and Xu [J. Eur. Math. Soc. 12 (2010) 429-459] allow us to relate the WLP to Gelfand-Tsetlin patterns.
Year
DOI
Venue
2011
10.1112/jlms/jdr033
JOURNAL OF THE LONDON MATHEMATICAL SOCIETY-SECOND SERIES
Keywords
Field
DocType
. weak lefschetz property,artinian algebra,powers of linear forms.,inverse system,algebraic geometry
Topology,Inverse,Mathematical analysis,Mathematics,Inverse system
Journal
Volume
ISSN
Citations 
84
0024-6107
0
PageRank 
References 
Authors
0.34
1
3
Name
Order
Citations
PageRank
Brian Harbourne100.34
Hal Schenck2304.50
Alexandra Seceleanu301.69