Notes on Jordan type of an Artinian algebra

Authors

  • Pedro Macias Marques Departamento de Matemática, Universidade de Évora

Keywords:

Jordan type, Aritinian algebra, deformations, Gorenstein, symmetric decomposition

Abstract

These notes were made for the Preparatory School on Lefschetz Properties, held from 6th to 10th May 2024, in Kraków, ahead of the conference "Lefschetz properties in algebra, geometry, topology, and combinatorics". They are a short introduction to Jordan type of an Artinian algebra, and collect basic results known so far, with examples to illustrate them along the way.

References

Altafi, Nasrin, Anthony Iarrobino, and Pedro Macias Marques. "Jordan type of an Artinian algebra, a survey." In Lefschetz Properties-Current and New Directions, edited by Tadahito Harima et al., 1-27. Cham: Springer, 2024.
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Basili, Roberta, and Anthony Iarrobino. "Pairs of commuting nilpotent matrices, and Hilbert function." J. Algebra 320, no. 3 (2008): 1235-1254.
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Harima, Tadahito, et al. The Lefschetz Properties. Heidelberg: Springer, 2013.
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Harima, Tadahito, et al. "The weak and strong Lefschetz properties for Artinian K-algebras." J. Algebra 262, no. 1 (2003): 99-126.
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Harima, Tadahito, and Junzo Watanabe. "The finite free extension of Artinian K-algebras with the strong Lefschetz property." Rend. Sem. Mat. Univ. Padova 110 (2003): 119-146.
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Iarrobino, Anthony. "Tangent cone of a Gorenstein singularity." In Proceedings of the Conference on Algebraic Geometry (Berlin, 1985), edited by Herbert Kurke and Gert-Martin Greuel, 163-176. Leipzig: Teubner, 1986.
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Iarrobino, Anthony. Associated Graded Algebra of a Gorenstein Artin Algebra. Mem. Amer. Math. Soc. 107, no. 514 (1994): viii+115 pp.
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Iarrobino, Anthony, and Pedro Macias Marques. "Reducibility of a family of local Artinian Gorenstein algebras." Preprint. arXiv:2112.14664.
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Iarrobino, Anthony, Pedro Macias Marques, and Chris McDaniel. "Artinian algebras and Jordan type." J. Commut. Algebra 14, no. 3 (2022): 365-414.
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Iarrobino, Anthony, Pedro Macias Marques, and Johanna Steinmeyer. "Jordan type and symmetric decomposition of an Artinian Gorenstein algebra." In preparation.
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Macaulay, Francis Sowerby. The Algebraic Theory of Modular Systems. Cambridge: Cambridge University Press, 1994.
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Meyer, Carl Dean. Matrix Analysis and Applied Linear Algebra. Philadelphia, PA: Society for Industrial and Applied Mathematics (SIAM), 2023.
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Weintraub, Steven H. Jordan Canonical Form-Theory and Practice. Cham: Springer, 2022.
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Published

2025-11-24

How to Cite

Marques, P. M. (2025). Notes on Jordan type of an Artinian algebra. Annales Universitatis Paedagogicae Cracoviensis Studia Mathematica, 24, 143–173. Retrieved from https://studmath.uken.krakow.pl/article/view/12386

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Section

Published on-line (DOI inactive)