Commutative and noncommutative invariant theory

V Drensky - arXiv preprint arXiv:2302.10052, 2023 - arxiv.org
The purpose of this survey paper is to bring to a large mathematical audience (containing
also non-algebraists) some topics of invariant theory both in the classical commutative and …

Defining relations for the algebra of invariants of 2× 2 matrices

V Drensky - Algebras and Representation Theory, 2003 - Springer
We obtain defining relations of the algebra of invariants of the classical subgroups of GL 2
(C) acting by simultaneous conjugation on m-tuples of 2× 2 complex matrices. The sets of …

[PDF][PDF] Weak polynomial identities for the matrix algebra of order two

P Koshlukov - Journal of Algebra, 1997 - core.ac.uk
Weak Polynomial Identities for the Matrix Algebra of Order Two Page 1 Ž . JOURNAL OF
ALGEBRA 188, 610625 1997 ARTICLE NO. JA966850 Weak Polynomial Identities for the …

Computing with matrix invariants

V Drensky - arXiv preprint math/0506614, 2005 - arxiv.org
This is an improved version of the talk of the author given at the Antalya Algebra Days VII on
May 21, 2005. We present an introduction to the theory of the invariants under the action of …

Weak polynomial identities and their applications

V Drensky - Communications in Mathematics, 2021 - cm.episciences.org
Let R be an associative algebra over a field K generated by a vector subspace V. The
polynomial f (x 1,..., xn) of the free associative algebra K is a weak polynomial identity for the …

Constants of Weitzenböck derivations and invariants of unipotent transformations acting on relatively free algebras

V Drensky, CK Gupta - Journal of Algebra, 2005 - Elsevier
In commutative algebra, a Weitzenböck derivation is a nonzero triangular linear derivation of
the polynomial algebra K [x1,…, xm] in several variables over a field K of characteristic 0 …

Finitely based ideals of weak polynomial identities

P Koshlukov - Communications in Algebra, 1998 - Taylor & Francis
Let K be a field, char K≠ 2, and let Vk be ak-dimensional vector space over K equipped with
a nondegenerate symmetric bilinear form. Denote Ck the Clifford algebra of Vk. We study the …

[HTML][HTML] Cocharacters for the weak polynomial identities of the Lie algebra of 3× 3 skew-symmetric matrices

M Domokos, V Drensky - Advances in Mathematics, 2020 - Elsevier
Let so 3 (K) be the Lie algebra of 3× 3 skew-symmetric matrices over a field K of
characteristic 0. The ideal I (M 3 (K), so 3 (K)) of the weak polynomial identities of the pair (M …

2-Graded polynomial identities for the Jordan algebra of the symmetric matrices of order two

P Koshlukov, DDPS Silva - Journal of Algebra, 2011 - Elsevier
The Jordan algebra of the symmetric matrices of order two over a field K has two natural
gradings by Z2, the cyclic group of order 2. We describe the graded polynomial identities for …

[PDF][PDF] Weak polynomial identities of small degree for the Weyl algebra

A Lopatin, CAR Palma, L Tang - Communications in …, 2024 - cm.episciences.org
In this paper we investigate weak polynomial identities for the Weyl algebra A1 over an
infinite field of arbitrary characteristic. Namely, we describe weak polynomial identities of the …