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Fundamentalnaya i Prikladnaya Matematika, 2020, Volume 23, Issue 2, Pages 147–161
(Mi fpm1887)
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Generalized typical dimension of a graded module
M. V. Kondratieva Moscow State University, Department of Mechanics and Mathematics,
Leninskie Gory, Moscow, Russia, 119991
Abstract:
In this paper, we prove an upper bound for the leading coefficient of the characteristic polynomial of a graded ideal in a ring of generalized polynomials. Examples of such rings are the rings of commutative polynomials (for which the classical Bézout theorem holds), as well as some rings of differential operators. For a system of generalized homogeneous equations in small codimensions we obtain exact estimates that are polynomial in $d$. In the general case, the estimate is double exponential in $\tau$: $O\bigl(d^{2^{\tau-1}}\bigr)$, where $d$ is the maximal degree of generators of a graded ideal and $\tau$ is its codimension. For systems of linear differential equations, bounds of the same asymptotics, but by other methods, were obtained by D. Grigoriev.
Citation:
M. V. Kondratieva, “Generalized typical dimension of a graded module”, Fundam. Prikl. Mat., 23:2 (2020), 147–161; J. Math. Sci., 262:5 (2022), 691–701
Linking options:
https://www.mathnet.ru/eng/fpm1887 https://www.mathnet.ru/eng/fpm/v23/i2/p147
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Abstract page: | 122 | Full-text PDF : | 28 | References: | 12 |
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