Small subalgebras of polynomial rings and Stillman's conjecture

T Ananyan, M Hochster - Journal of the American Mathematical Society, 2020 - ams.org
Let $ n, d,\eta $ be positive integers. We show that in a polynomial ring $ R $ in $ N $
variables over an algebraically closed field $ K $ of arbitrary characteristic, any $ K …

Big polynomial rings and Stillman's conjecture

D Erman, SV Sam, A Snowden - Inventiones mathematicae, 2019 - Springer
The purpose of this paper is to prove that certain limits of polynomial rings are themselves
polynomial rings, and show how this observation can be used to deduce some interesting …

Strength conditions, small subalgebras, and Stillman bounds in degree≤ 4

T Ananyan, M Hochster - Transactions of the American Mathematical …, 2020 - ams.org
In an earlier work, the authors prove Stillman's conjecture in all characteristics and all
degrees by showing that, independent of the algebraically closed field $ K $ or the number …

Cubics in 10 variables vs. cubics in 1000 variables: uniformity phenomena for bounded degree polynomials

D Erman, S Sam, A Snowden - Bulletin of the American Mathematical …, 2019 - ams.org
Hilbert famously showed that polynomials in $ n $ variables are not too complicated, in
various senses. For example, the Hilbert Syzygy Theorem shows that the process of …

The Regularity Conjecture for prime ideals in polynomial rings

J McCullough, I Peeva - EMS Surveys in Mathematical Sciences, 2021 - ems.press
The Regularity Conjecture for prime ideals in polynomial rings Page 1 EMS Surv. Math. Sci. 7
(2020), 173–206 DOI 10.4171/EMSS/38 EMS Surveys in Mathematical Sciences © European …

[HTML][HTML] The projective dimension of three cubics is at most 5

P Mantero, J McCullough - Journal of Pure and Applied Algebra, 2019 - Elsevier
Let R be a polynomial ring over a field and I an ideal generated by three forms of degree
three. Motivated by Stillman's question, Engheta proved that the projective dimension pd …

Betti numbers of Koszul algebras defined by four quadrics

P Mantero, M Mastroeni - Journal of Pure and Applied Algebra, 2021 - Elsevier
Let I be an ideal generated by quadrics in a standard graded polynomial ring S over a field.
A question of Avramov, Conca, and Iyengar asks whether the Betti numbers of R= S/I over S …

[PDF][PDF] Free Resolutions and Associated Invariants

M Batavia - manav77.github.io
This report is divided into seven chapters. In chapter one, graded resolutions are introduced
and some related fundamental results are proved. In chapter two, we discuss Gröbner bases …

On the projective dimension of quadric almost complete intersections with low multiplicities

SE Khoury - 2019 - projecteuclid.org
Let S be a polynomial ring over an algebraically closed field k and \mathfrakp=(x,y,z,w) a
homogeneous height 4 prime ideal. We give a finite characterization of the degree 2 …

Universal lex ideal approximations of extended Hilbert functions and Hamilton numbers

T Ananyan, M Hochster - Journal of Algebra, 2020 - Elsevier
Let R (h) denote the polynomial ring in variables x 1,…, xh over a specified field K. We
consider all of these rings simultaneously, and in each use lexicographic (lex) monomial …