Abstract
We survey the development and status quo of a subject best described as “generic representation theory of finite dimensional algebras”, which started taking shape in the early 1980s. Let \({\Lambda }\) be a finite dimensional algebra over an algebraically closed field. Roughly, the theory aims at (a) pinning down the irreducible components of the standard parametrizing varieties for the \({\Lambda }\)-modules with a fixed dimension vector, and (b) assembling generic information on the modules in each individual component, that is, assembling data shared by all modules in a dense open subset of that component. We present an overview of results spanning the spectrum from hereditary algebras through the tame non-hereditary case to wild non-hereditary algebras.
Dedicated to Dave Benson on the occasion of his sixtieth birthday
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
E. Babson, B. Huisgen-Zimmermann, and R. Thomas, Generic representation theory of quivers with relations, J. Algebra 322 (2009), 1877–1918.
E. Babson, B. Huisgen-Zimmermann, and R. Thomas, Maple codes for computing \({\mathfrak{Grass}}(\sigma )\)s, posted at www.math.washington.edu/thomas/programs/programs.html.
M. Barot and J. Schröer, Module varieties over canonical algebras, J. Algebra 246 (2001), 175–192.
F. M. Bleher, T. Chinburg and B. Huisgen-Zimmermann, The geometry of algebras with vanishing radical square, J. Algebra 425 (2015), 146–178.
F. M. Bleher, T. Chinburg and B. Huisgen-Zimmermann, The geometry of algebras with low Loewy length, (in preparation).
K. Bongartz and B. Huisgen-Zimmermann, Varieties of uniserial representations IV. Kinship to geometric quotients, Trans. Amer. Math. Soc. 353 (2001), 2091–2113.
A.T. Carroll, Generic modules for gentle algebras, J. Algebra 437 (2015), 177–201.
A.T. Carroll and J. Weyman, Semi-invariants for gentle algebras, Contemp. Math. 592 (2013), 111–136.
W. Crawley-Boevey, Geometry of representations of algebras, (1993), lectures posted at www1.maths.leeds.ac.uk/~pmtwc/geomreps.pdf.
W. Crawley-Boevey and J. Schröer, Irreducible components of varieties of modules, J. reine angew. Math. 553 (2002), 201–220.
J.A. de la Peña, Tame algebras: Some fundamental notions, Universität Bielefeld, SFB 343, Preprint E95-010, (1995).
H. Derksen and J. Weyman, On the canonical decomposition of quiver representations, Compositio Math. 133 (2002), 245–265.
J. Donald and F.J. Flanigan, The geometry of Rep( \(A,V\) ) for a square-zero algebra, Notices Amer. Math. Soc. 24 (1977), A-416.
K. Erdmann, Blocks of Tame Representation Type and Related Algebras, Lecture Notes in Math. 1428, Berlin (1990), Springer-Verlag.
E.M. Friedlander and J. Pevtsova, Representation theoretical support spaces for finite group schemes, Amer. J. Math. 127 (2005), 379–420.
E.M. Friedlander, J. Pevtsova and A. Suslin, Generic and maximal Jordan type, Invent. Math. 168 (2007), 485–522.
Ch. Geiss and J. Schröer, Varieties of modules over tubular algebras, Colloq. Math. 95 (2003), 163–183.
Ch. Geiss and J. Schröer, Extension-orthogonal components of preprojective varieties, Trans. Amer. Math. Soc. 357 (2004), 1953–1962.
I.M. Gelfand and V.A. Ponomarev, Indecomposable representations of the Lorentz group, Usp. Mat. Nauk 23 (1968), 3-60; Engl. transl.: Russian Math. Surv. 23 (1968), 1–58.
K.R. Goodearl and B. Huisgen-Zimmermann, Closures in varieties of representations and irreducible components, Algebra and Number Theory, to appear.
B. Huisgen-Zimmermann, Classifying representations by way of Grassmannians, Trans. Amer. Math. Soc. 359 (2007), 2687–2719.
B. Huisgen-Zimmermann, A hierarchy of parametrizing varieties for representations, in Rings, Modules and Representations (N.V. Dung, et al., eds.), Contemp. Math. 480 (2009), 207–239.
B. Huisgen-Zimmermann, Irreducible components of varieties of representations. The local case, J. Algebra 464 (2016), 198–225.
B. Huisgen-Zimmermann and I. Shipman, Irreducible components of varieties of representations. The acyclic case, Math. Zeitschr. 287 (2017), 1083–1107.
C.U. Jensen and H. Lenzing, Model Theoretic Algebra, New York (1989) Gordon and Breach.
V. Kac, Infinite root systems, representations of graphs and invariant theory, Invent. Math. 56 (1980), 57–92.
V. Kac, Infinite root systems, representations of graphs and invariant theory, II, J. Algebra 78 (1982), 141–162.
M. Kashiwara and Y. Saito, Geometric construction of crystal bases, Duke Math. J. 89 (1997), 9–36.
F.H. Membrillo-Hernández and L. Salmerón, A geometric approach to the finitistic dimension conjecture, Archiv Math. 67 (1996), 448–456.
K. Morrison, The scheme of finite-dimensional representations of an algebra, Pac. J. Math. 91 (1980), 199–218.
N.J. Richmond, A stratification for varieties of modules, Bull. London Math. Soc. 33 (2001), 565–577.
C. Riedtmann, M. Rutscho, and S.O. Smalø, Irreducible components of module varieties: An example, J. Algebra 331 (2011), 130–144.
C.M. Ringel, Tame Algebras and Integral Quadratic Forms, Lecture Notes in Math. 1099, Berlin (1984) Springer-Verlag.
C.M. Ringel, The preprojective algebra of a quiver, in Algebras and Modules II (Geiranger, 1996), CMS Conf. Proc. 24 (1998), 467–480.
M. Rosenlicht, A remark on quotient spaces, An. Acad. Brasil. Ci. 35 (1963), 487–489.
A. Schofield, General representations of quivers, Proc. London Math. Soc. (3) 65 (1992), 46–64.
J. Schröer, Varieties of pairs of nilpotent matrices annihilating each other, Comment. Math. Helv. 79 (2004), 396–426.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2018 Springer International Publishing AG
About this paper
Cite this paper
Goodearl, K.R., Huisgen-Zimmermann, B. (2018). Understanding Finite Dimensional Representations Generically. In: Carlson, J., Iyengar, S., Pevtsova, J. (eds) Geometric and Topological Aspects of the Representation Theory of Finite Groups. PSSW 2016. Springer Proceedings in Mathematics & Statistics, vol 242. Springer, Cham. https://doi.org/10.1007/978-3-319-94033-5_6
Download citation
DOI: https://doi.org/10.1007/978-3-319-94033-5_6
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-94032-8
Online ISBN: 978-3-319-94033-5
eBook Packages: Mathematics and StatisticsMathematics and Statistics (R0)