Results 61 to 70 of about 16,887 (181)

Zariski topologies on groups

open access: yes, 2010
6 ...
Banakh, Taras, Protasov, Igor
openaire   +2 more sources

Entropy rigidity for cusped Hitchin representations

open access: yesJournal of Topology, Volume 19, Issue 1, March 2026.
Abstract We establish an entropy rigidity theorem for Hitchin representations of geometrically finite Fuchsian groups which generalizes a theorem of Potrie and Sambarino for Hitchin representations of closed surface groups. In the process, we introduce the class of (1,1,2)‐hypertransverse groups and show for such a group that the Hausdorff dimension of
Richard Canary   +2 more
wiley   +1 more source

Zariski Topologies for Coprime and Second Submodules [PDF]

open access: yesAlgebra Colloquium, 2015
Let M be a non-zero module over an associative (not necessarily commutative) ring. In this paper, we investigate the so-called second and coprime submodules of M. Moreover, we topologize the spectrum Spec s (M) of second submodules of M and the spectrum Spec c (M) of coprime submodules of M, study several properties of these spaces and investigate ...
openaire   +3 more sources

Rigidity of anti‐de Sitter (2+1)‐spacetimes with convex boundary near the Fuchsian locus

open access: yesJournal of the London Mathematical Society, Volume 113, Issue 2, February 2026.
Abstract We prove that globally hyperbolic compact anti‐de Sitter (2+1)‐spacetimes with a strictly convex spacelike boundary that is either smooth or polyhedral and whose holonomy is close to Fuchsian are determined by the induced metric on the boundary.
Roman Prosanov, Jean‐Marc Schlenker
wiley   +1 more source

Reflection principle characterizing groups in which unconditionally closed sets are algebraic

open access: yes, 2007
We give a necessary and sufficient condition, in terms of a certain reflection principle, for every unconditionally closed subset of a group G to be algebraic. As a corollary, we prove that this is always the case when G is a direct product of an Abelian
Dikran Dikranjan   +4 more
core   +2 more sources

Families of singular algebraic varieties that are rationally elliptic spaces

open access: yesMathematische Nachrichten, Volume 299, Issue 1, Page 214-223, January 2026.
Abstract We discuss families of hypersurfaces with isolated singularities in projective space with the property that the sum of the ranks of the rational homotopy and the homology groups is finite. They represent infinitely many distinct homotopy types with all hypersurfaces having a nef canonical or anti‐canonical class.
A. Libgober
wiley   +1 more source

Holomorphic shadows in the eyes of model theory

open access: yes, 2009
We define a subset of an almost complex manifold (M,J) to be a holomorphic shadow if it is the image of a J-holomorphic map from a compact complex manifold.
Kessler, Liat
core   +1 more source

Splitting the difference: Computations of the Reynolds operator in classical invariant theory

open access: yesBulletin of the London Mathematical Society, Volume 58, Issue 1, January 2026.
Abstract If G$G$ is a linearly reductive group acting rationally on a polynomial ring S$S$, then the inclusion SG↪S$S^{G} \hookrightarrow S$ possesses a unique G$G$‐equivariant splitting, called the Reynolds operator. We describe algorithms for computing the Reynolds operator for the classical actions as in Weyl's book.
Aryaman Maithani
wiley   +1 more source

Some Results on Fuzzy Zariski Topology on Spec(J.L)

open access: yesIbn Al-Haitham Journal for Pure and Applied Sciences, 2017
Some Results on Fuzzy Zariski Topology  on Spec(J.L)
R.N. Majeed
doaj  

The images of polynomials with zero constant term on strictly upper triangular matrix algebras(常数项为零的多项式在严格上三角矩阵代数上的像)

open access: yesZhejiang Daxue xuebao. Lixue ban
In the present paper, we define the minimum degree of polynomials. By using the minimum degree of polynomials and Zariski topology, we give a complete description of the images of polynomials with zero constant term on strictly upper triangular matrix ...
罗英语(LUO Yingyu)   +1 more
doaj   +1 more source

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