Publications Meetings The Profession Membership Programs Math Samplings Policy & Advocacy In the News About the AMS
|
   
Available in electronic format
Available in print format
Proceedings of the American Mathematical Society
Proceedings of the American Mathematical Society
ISSN 1088-6826(e) ISSN 0002-9939(p)

     

Jet schemes of the commuting matrix pairs scheme

Author(s): B. A. Sethuraman; Klemen Sivic
Journal: Proc. Amer. Math. Soc. 137 (2009), 3953-3967.
MSC (2000): Primary 14M99
Posted: July 30, 2009
MathSciNet review: 2538555
Retrieve article in: PDF

Abstract | References | Similar articles | Additional information

Abstract: We show that for all $ k\ge 1$ there exists an integer $ N(k)$ such that for all $ n\ge N(k)$ the $ k$-th order jet scheme over the commuting $ n\times n$ matrix pairs scheme is reducible.

At the other end of the spectrum, it is known that for all $ k\ge 1$ the $ k$-th order jet scheme over the commuting $ 2\times 2$ matrices is irreducible; we show that the same holds for $ n=3$.


References:

1.
F.R. Gantmacher, The Theory of Matrices, Vol. 1, Chelsea Publishing Company, New York, 1959. MR 0107649 (21:6372c)

2.
M. Gerstenhaber, On dominance and varieties of commuting matrices, Annals of Mathematics (2), 73 (1961), 324-348. MR 0132079 (24:A1926)

3.
Russell Goward and Karen Smith, The jet scheme of a monomial scheme. Comm. Algebra, 34 (2006), 1591-1598. MR 2229478 (2007e:13037)

4.
R. Guralnick, A note on commuting pairs of matrices, Linear and Multilinear Algebra, 31 (1992), 71-75. MR 1199042 (94c:15021)

5.
Boyan Jonov, Shellability of a complex associated to the first order jet scheme of a determinantal variety, in preparation.

6.
Tomaž Košir and B.A. Sethuraman, Determinantal varieties over truncated polynomial rings, Journal of Pure and Applied Algebra, 195 (2005), 75-95. MR 2100311 (2005h:13020)

7.
Tomaž Košir and B.A. Sethuraman, A Groebner basis for the $ 2\times2$ determinantal ideal $ \mod t^2$, J. Algebra, 292 (2005), 138-153. MR 2166800 (2006f:13011)

8.
Qing Liu, Algebraic Geometry and Arithmetic Curves, Oxford Grad. Texts Math., 6, Oxford University Press, 2002. MR 1917232 (2003g:14001)

9.
Mircea Mustaţa. Jet schemes of locally complete intersection canonical singularities. Invent. Math., 145 (3) (2001), 397-424. MR 1856396 (2002f:14005)

10.
Mircea Mustaţa. Singularities of pairs via jet schemes. J. Amer. Math. Soc., 15(3) (2002), 599-615. MR 1896234 (2003b:14005)

11.
T. Motzkin and O. Taussky-Todd, Pairs of matrices with property $ L$. II, Trans. Amer. Math. Soc., 80 (1955), 387-401. MR 0086781 (19:242c)

12.
John F. Nash, Jr., Arc structure of singularities. A celebration of John F. Nash, Jr., Duke Math. J., 81 (1995) (1), 31-38 (1996). MR 1381967 (98f:14011)

13.
Michael G. Neubauer and David J. Saltman, Two-generated commutative subalgebras of $ M_n(F)$, J. Algebra, 164 (1994), 545-562. MR 1271255 (95g:16030)

14.
M.J. Neubauer and B.A. Sethuraman, Commuting pairs in the centralizers of $ 2$-regular matrices, Journal of Algebra, 214 (1999), 174-181. MR 1684884 (2000h:15024)

15.
Cornelia Yuen, Jet Schemes and Truncated Wedge Schemes, Ph.D. thesis, University of Michigan (2006).


Similar Articles:

Retrieve articles in Proceedings of the American Mathematical Society with MSC (2000): 14M99

Retrieve articles in all Journals with MSC (2000): 14M99


Additional Information:

B. A. Sethuraman
Affiliation: Department of Mathematics, California State University, Northridge, Northridge, California 91330
Email: al.sethuraman@csun.edu

Klemen Sivic
Affiliation: Institute of Mathematics, Physics, and Mechanics, University of Ljubljana, Jadranska 19, 1000 Ljubljana, Slovenia
Email: klemen.sivic@fmf.uni-lj.si

DOI: 10.1090/S0002-9939-09-10029-1
PII: S 0002-9939(09)10029-1
Received by editor(s): November 4, 2008,
Received by editor(s) in revised form: February 19, 2009
Posted: July 30, 2009
Additional Notes: The first author was supported by the National Science Foundation grant DMS-0700904.
The second author was supported by the Slovenian Research Agency.
Communicated by: Ted Chinburg
Copyright of article: Copyright 2009, American Mathematical Society
The copyright for this article reverts to public domain after 28 years from publication.




AMS and Social Media LinkedIn Facebook Podcasts Twitter YouTube RSS Feeds Blogs Wikipedia