Abstract
This paper presents a discussion of the algebraic and combinatorial aspects of the theory of pure O-sequences. Various instances where pure O-sequences appear are described. Several open problems that deserve further investigation are also presented.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Björner, A.: Nonpure shellability, F-vectors, subspace arrangements and complexity. In: Formal Power Series and Algebraic Combinatorics. Series Formelles et Combinatoire Algébrique (1994). DIMACS Series in Discrete Mathematics and Theoretical Computer Science, vol. 24, pp. 25–54 (1994)
Boij, M., Zanello, F.: Level algebras with bad properties. Proc. Amer. Math. Soc. 135(9), 2713–2722 (2007)
Boij, M., Migliore, J., Miró-Roig, R., Nagel, U., Zanello, F.: On the shape of a pure O-sequence. Mem. Amer. Math. Soc. 218(2024), vii + 78 pp (2012)
Boyle, B.: On the unimodality of pure O-sequences. Ph.D. Thesis, University of Notre Dame, Indiana (2012)
Brenner, H., Kaid, A.: Syzygy bundles on ℙ 2 and the weak Lefschetz property. Illinois J. Math. 51(4), 1299–1308 (2007)
Brenti, F.: Log-concave and unimodal sequences in algebra, combinatorics, and geometry: an update. In: Jerusalem Combinatorics ’93. Contemporary Mathematics, vol. 178, pp. 71–89 (1994)
Bruck, R.H., Ryser, H.J.: The nonexistence of certain finite projective planes. Canadian J. Math. 1, 88–93 (1949)
Bruns, W., Herzog, J.: Cohen–Macaulay rings. Revised edition, Cambridge Studies in Advanced Mathematics, vol. 39. Cambridge University Press, Cambridge (1998)
Chari, M.K.: Matroid inequalities. Discrete Math. 147(1–3), 283–286 (1995)
Chari, M.K.: Two decompositions in topological combinatorics with applications to matroid complexes. Trans. Amer. Math. Soc. 349(10), 3925–3943 (1997)
Chen, C., Guo, A., Jin, X., Liu, G.: Trivariate monomial complete intersections and plane partitions. J. Commut. Algebra 3(4), 459–490 (2011)
Cho, Y.H., Iarrobino, A.: Hilbert Functions and Level Algebras. J. Algebra 241(2), 745–758
Chowla, S., Ryser, H.J.: Combinatorial problems. Canadian J. Math. 2, 93–99 (1950)
Colbourn, C.J., Dinitz, J.H. (eds.): Handbook of Combinatorial Designs. CRC Press, Boca Raton (1996)
Constantinescu, A., Varbaro, M.: h-vectors of matroid complexes. Preprint (2012)
Cook, D. II: The Lefschetz properties of monomial complete intersections in positive characteristic. J. Algebra 369, 42–58 (2012)
Cook, D. II, Nagel, U.: Hyperplane sections and the subtlety of the Lefschetz properties. J. Pure Appl. Algebra 216(1), 108–114 (2012)
Cook, D. II, Nagel, U.: The weak Lefschetz property, monomial ideals, and lozenges. Illinois J. Math. (to appear). (arXiv:0909.3509)
Cook, D. II, Nagel, U.: Enumerations deciding the weak Lefschetz property. Preprint. (arXiv:1105.6062)
Dawson, J.E.: A collection of sets related to the Tutte polynomial of a matroid. In: Graph theory, Singapore (1983). Lecture Notes in Mathematics, vol. 1073, pp. 193–204. Springer, Berlin (1984)
de Bruijn, N.G., van Ebbenhorst Tengbergen, Ca., Kruyswijk, D.: On the set of divisors of a number. Nieuw Arch. Wiskunde (2) 23, 191–193 (1951)
De Loera, J.A., Kemper, Y., Klee, S.: h-vectors of small matroid complexes. Electron. J. Combin. 19, P14 (2012)
Dembowski, P.: Finite geometries. Reprint of the 1968 original, Classics in Mathematics, Springer, Berlin, xii + 375 pp (1997)
Fröberg, R., Laksov, D.: Compressed Algebras. Conference on Complete Intersections in Acireale. In: Lecture Notes in Mathematics, vol. 1092, pp. 121–151. Springer, Berlin (1984)
Geramita, A.V.: Inverse systems of fat points: Waring’s problem, secant varieties and Veronese varieties and parametric spaces of Gorenstein ideals. Queen’s Papers in Pure and Applied Mathematics, vol. 102. The Curves Seminar at Queen’s, vol. X, pp. 3–114 (1996)
Geramita, A.V., Harima, T., Migliore, J., Shin, Y.: The Hilbert function of a level algebra. Mem. Amer. Math. Soc. 186(872), vi + 139 pp (2007)
HÃ , H.T., Stokes, E., Zanello, F.: Pure O-sequences and matroid h-vectors. Ann. Comb. (to appear) (arXiv:1006.0325)
Hanani, M.: On Quadruple Systems. Canad. J. Math. 12, 145–157 (1960)
Harima, T.: Characterization of Hilbert functions of Gorenstein Artin algebras with the weak Stanley property. Proc. Amer. Math. Soc. 123(29), 3631–3638 (1995)
Harima, T., Migliore, J., Nagel, U., Watanabe, J.: The weak and strong Lefschetz properties for Artinian K-algebras. J. Algebra 262(1), 99–126 (2003)
Hausel, T., Sturmfels, B.: Toric hyperkähler varieties. Doc. Math. 7, 495–534 (2002)
Hausel, T.: Quaternionic geometry of matroids. Cent. Eur. J. Math. 3(1), 26–38 (2005)
Herzog, J., Popescu, D.: The strong Lefschetz property and simple extensions. Preprint (arXiv:math/05065537)
Hibi, T.: What can be said about pure O-sequences? J. Combin. Theory Ser. A 50(2), 319–322 (1989)
Huh, J.: Milnor numbers of projective hypersurfaces and the chromatic polynomial of graphs. J. Amer. Math. Soc. 25, 907–927 (2012)
Huh, J.: h-vectors of matroids and logarithmic concavity. Preprint (arXiv:1201.2915)
Huh, J., Katz, E.: Log-concavity of characteristic polynomials and the Bergman fan of matroids. Math. Ann. 354, 1103–1116 (2012)
Iarrobino, A.: Compressed Algebras: Artin algebras having given socle degrees and maximal length. Trans. Amer. Math. Soc. 285(1), 337–378 (1984)
Iarrobino, A., Kanev, V.: Power sums, Gorenstein algebras, and determinantal loci. Springer Lecture Notes in Mathematics, vol. 1721. Springer, Heidelberg (1999)
Kirkman, T.P.: On a Problem in Combinatorics, Cambridge Dublin Math. J. 2, 191–204 (1847)
Lam, C.W.H.: The search for a finite projective plane of order 10. Amer. Math. Monthly 98(4), 305–318 (1991)
Lenz, M.: The f-vector of a realizable matroid complex is strictly log-concave. Combinatorics Probability, and Computing (to appear). (arXiv:1106.2944)
Li, J., Zanello, F.: Monomial complete intersections, the Weak Lefschetz Property and plane partitions. Discrete Math. 310(24), 3558–3570 (2010)
Lindner, C.C., Rodger, C.A.: Design Theory. CRC Press, Boca Raton (1997)
Lindsey, M.: A class of Hilbert series and the strong Lefschetz property. Proc. Amer. Math. Soc. 139(1), 79–92 (2011)
Linusson, S.: The number of M-sequences and f-vectors. Combinatorica 19(2), 255–266 (1999)
Macaulay, F.H.S.: Some properties of enumeration in the theory of modular systems. Proc. London Math. Soc. 26(1), 531–555 (1927)
Mathieu, E.: Mémoire sur l’étude des fonctions de plusieurs quantités, sur la manière de les former et sur les substitutions qui les laissent invariables. J. Math. Pures Appl. (Liouville) (2) VI, 241–323 (1861)
Mathieu, E.: Sur la fonction cinq fois transitive de 24 quantités. Liouville J. (2) XVIII, 25–47 (1873)
Merino, C.: The chip firing game and matroid complexes. Discrete models: combinatorics, computation, and geometry (2001). Discrete Mathematics and Theoretical Computer Science Proceedings, AA, Maison de l’informatique et des mathématiques discrétes (MIMD), Paris. pp. 245–255 (2001)
Migliore, J., Nagel, U.: Reduced arithmetically Gorenstein schemes and simplicial polytopes with maximal Betti numbers. Adv. Math. 180(1), 1–63 (2003)
Migliore, J., Nagel, U.: A tour of the weak and strong Lefschetz properties. Preprint (arXiv:1109.5718)
Migliore, J., Nagel, U., Zanello, F.: A lower bound on the second entry of a Gorenstein h-vector and a conjecture of Stanley. Proc. Amer. Math. Soc. 136(8), 2755–2762 (2008)
Migliore, J., Nagel, U., Zanello, F.: Bounds and asymptotic minimal growth for Gorenstein Hilbert functions. J. Algebra 210(5), 1510–1521 (2009)
Migliore, J., Miró-Roig, R., Nagel, U.: Monomial ideals, almost complete intersections, and the weak Lefschetz property. Trans. Amer. Math. Soc. 363(1), 229–257 (2011)
Neel, D.L., Neudauer, N.A.: Matroids you have known. Math. Mag. 82(1), 26–41 (2009)
Oh, S.: Generalized permutohedra, h-vectors of cotransversal matroids and pure O-sequences. Preprint (arXiv:1005.5586)
Okonek, C., Schneider, M., Spindler, H.: Vector bundles on complex projective spaces. Corrected reprint of the 1988 edition. With an appendix by S.I. Gelfand. Modern Birkhäuser Classics. Birkhäuser/Springer Basel AG, Basel (2011)
Östergard, P.R.J., Pottonen, O.: There exists no Steiner system S(4,5,17). J. Combin. Theory Ser. A 115(8), 1570–1573 (2008)
Oxley, J.G.: Matroid Theory. Oxford University Press, Oxford (2006)
Pastine, A.. Zanello, F.: Two unfortunate properties of pure f-vectors, in preparation
Proudfoot, N.: On the h-vector of a matroid complex. unpublished note.
Reid, L., Roberts, L., Roitman, M.: On complete intersections and their Hilbert functions. Canad. Math. Bull. 34(4), 525–535 (1991)
Schweig, J.: On the h-Vector of a lattice path matroid. Electron. J. Combin. 17(1), N3 (2010)
Sekiguchi, H.: The upper bound of the Dilworth number and the Rees number of Noetherian local rings with a Hilbert function. Adv. Math. 124(2), 197–206 (1996)
Stanley, R.: Cohen–Macaulay complexes. In: Aigner, M. (ed.) Higher Combinatorics, pp. 51–62. Reidel, Dordrecht (1977)
Stanley, R.: Hilbert functions of graded algebras. Adv. Math. 28(1), 57–83 (1978)
Stanley, R.: Log-concave and unimodal sequences in algebra, combinatorics, and geometry. Ann. New York Acad. Sci. 576, 500–535 (1989)
Stanley, R.: Combinatorics and commutative algebra. Progress in Mathematics, vol. 41, 2nd edn. Birkhäuser, Boston (1996)
Stanley, R.: Positivity problems and conjectures in algebraic combinatorics. In Mathematics: Frontiers and Perspectives, pp. 295–319. American Mathematical Society, Providence (2000)
Stanley, R.: Enumerative Combinatorics, vol. I, 2nd edn. Cambridge University Press, Cambridge (2012)
Stanley, R., Zanello, F.: On the rank function of a differential poset. Electron. J. Combin. 19(2), p. 13, 17 (2012)
Stokes, E.: The h-vectors of matroids and the arithmetic degree of squarefree strongly stable ideals. Ph.D. Thesis, University of Kentucky, UK (2007)
Swartz, E.: g-elements of matroid complexes. J. Combin. Theory Ser. B 88(2), 369–375 (2003)
Swartz, E.: g-elements, finite buildings, and higher Cohen–Macaulay connectivity. J. Combin. Theory Ser. A 113(7), 1305–1320 (2006)
Tahat, A.: On the nonunimodality of Cohen-Macaulay f-vectors. M.S. Thesis, Michigan Technological University, in preparation
Veblen, O., Wedderburn, J.H.M.: Non-Desarguesian and non-Pascalian geometries. Trans. Amer. Math. Soc. 8(3), 379–388 (1907)
Watanabe, J.: The Dilworth number of Artinian rings and finite posets with rank function. In: Commutative Algebra and Combinatorics, Advanced Studies in Pure Mathematics, vol. 11, pp. 303–312. Kinokuniya Co. North Holland, Amsterdam (1987)
White, N. (ed.): Theory of matroids. Encyclopedia of Mathematics and Its Applications, vol. 26. Cambridge University Press, Cambridge (1986)
White, N. (ed.): Matroids Applications. In: Encyclopedia of Mathematics and Its Applications, vol. 40. Cambridge University Press, Cambridge (1992)
Zanello, F.: Extending the idea of compressed algebra to arbitrary socle-vectors. J. Algebra 270(1), 181–198 (2003)
Zanello, F.: Extending the idea of compressed algebra to arbitrary socle-vectors, II: cases of non-existence. J. Algebra 275(2), 730–748 (2004)
Zanello, F.: A non-unimodal codimension 3 level h-vector. J. Algebra 305(2), 949–956 (2006)
Zanello, F.: Interval Conjectures for level Hilbert functions. J. Algebra 321(10), 2705–2715 (2009)
Acknowledgements
We wish to thank David Cook II and Richard Stanley for their helpful comments. The third author also thanks Jürgen Bierbrauer for an interesting discussion on the connections between group theory and Steiner systems. We thank the referee for a careful reading of the chapter.
The work for this chapter was done while the first author was sponsored by the National Security Agency under Grant Number H98230-12-1-0204 and by the Simons Foundation under grant #208579. The work for this chapter was done while the second author was sponsored by the National Security Agency under Grant Number H98230-12-1-0247 and by the Simons Foundation under grant #208869.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2013 Springer Science+Business Media New York
About this chapter
Cite this chapter
Migliore, J., Nagel, U., Zanello, F. (2013). Pure O-Sequences: Known Results, Applications, and Open Problems. In: Peeva, I. (eds) Commutative Algebra. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-5292-8_16
Download citation
DOI: https://doi.org/10.1007/978-1-4614-5292-8_16
Published:
Publisher Name: Springer, New York, NY
Print ISBN: 978-1-4614-5291-1
Online ISBN: 978-1-4614-5292-8
eBook Packages: Mathematics and StatisticsMathematics and Statistics (R0)