What makes a complex a virtual resolution?
HTML articles powered by AMS MathViewer
- by Michael C. Loper HTML | PDF
- Trans. Amer. Math. Soc. Ser. B 8 (2021), 885-898
Abstract:
Virtual resolutions are homological representations of finitely generated $\text {Pic}(X)$-graded modules over the Cox ring of a smooth projective toric variety. In this paper, we identify two algebraic conditions that characterize when a chain complex of graded free modules over the Cox ring is a virtual resolution. We then turn our attention to the saturation of Fitting ideals by the irrelevant ideal of the Cox ring and prove some results that mirror the classical theory of Fitting ideals for Noetherian rings.References
- M. F. Atiyah and I. G. Macdonald, Introduction to commutative algebra, Addison-Wesley Publishing Co., Reading, Mass.-London-Don Mills, Ont., 1969. MR 0242802
- Christine Berkesch, Daniel Erman, and Gregory G. Smith, Virtual resolutions for a product of projective spaces, Algebr. Geom. 7 (2020), no. 4, 460–481. MR 4156411, DOI 10.14231/ag-2020-013
- David A. Buchsbaum and David Eisenbud, What makes a complex exact?, J. Algebra 25 (1973), 259–268. MR 314819, DOI 10.1016/0021-8693(73)90044-6
- David A. Cox, The homogeneous coordinate ring of a toric variety, J. Algebraic Geom. 4 (1995), no. 1, 17–50. MR 1299003
- David A. Cox, John B. Little, and Henry K. Schenck, Toric varieties, Graduate Studies in Mathematics, vol. 124, American Mathematical Society, Providence, RI, 2011. MR 2810322, DOI 10.1090/gsm/124
- David Eisenbud, Commutative algebra, Graduate Texts in Mathematics, vol. 150, Springer-Verlag, New York, 1995. With a view toward algebraic geometry. MR 1322960, DOI 10.1007/978-1-4612-5350-1
- H. Fitting, Die Determinantenideale eines Moduls., Jahresber. Dtsch. Math.-Ver, 46 (1936), 195–228.
- C. Peskine and L. Szpiro, Dimension projective finie et cohomologie locale, Inst. Hautes Études Sci. Publ. Math 42 (1973), 47–119., DOI 10.1007/BF02685877
- Diane Maclagan and Gregory G. Smith, Multigraded Castelnuovo-Mumford regularity, J. Reine Angew. Math. 571 (2004), 179–212. MR 2070149, DOI 10.1515/crll.2004.040
- Daniel R. Grayson and Michael E. Stillman, Macaulay2, a software system for research in algebraic geometry, available at http://www.math.uiuc.edu/Macaulay2/.
- Igor R. Shafarevich, Basic algebraic geometry. 1, Translated from the 2007 third Russian edition, Springer, Heidelberg, 2013. Varieties in projective space. MR 3100243
Additional Information
- Michael C. Loper
- Affiliation: Department of Mathematics, University of Wisconsin River Falls, River Falls, Wisconsin 54022
- MR Author ID: 1392117
- Email: michael.loper@uwrf.edu
- Received by editor(s): January 14, 2021
- Received by editor(s) in revised form: August 4, 2021
- Published electronically: October 15, 2021
- Additional Notes: The author was supported by the NSF RTG grant DMS-1745638
- © Copyright 2021 by the author under Creative Commons Attribution 3.0 License (CC BY 3.0)
- Journal: Trans. Amer. Math. Soc. Ser. B 8 (2021), 885-898
- MSC (2020): Primary 13D02; Secondary 14M25, 14F06
- DOI: https://doi.org/10.1090/btran/91
- MathSciNet review: 4325863