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  5. Quadrics defined by skew-symmetric matrices
 
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Quadrics defined by skew-symmetric matrices

Source
International Journal of Algebra
Date Issued
2017-11-01
Author(s)
Saha, Joydip
Sengupta, Indranath  
Tripathi, Gaurab
DOI
10.12988/ija.2017.7942
Volume
vol. 11
Issue
no. 8
Abstract
In this paper we propose a model for computing a minimal free resolution for ideals of the form I1(XnYn), where Xn is an n n skew-symmetric matrix with indeterminate entries xij and Yn is a generic column matrix with indeterminate entries yj. We verify that the model works for n = 3 and n = 4 and pose some statements as conjectures. Answering the conjectures in a rmative would enable us to computea minimal free resolution for general n.
Publication link
https://doi.org/10.12988/ija.2017.7942
URI
http://repository.iitgn.ac.in/handle/IITG2025/30124
Subjects
Gr ?obner basis
Betti numbers
determinantal ideals
skew-symmetric matrix
mapping cone
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