Results 141 to 150 of about 6,335 (253)
, 2008 Let KG be the group ring of a group G over a commutative ring K with unity. The rings KG are described for which xx(sigma)=x(sigma)x for all x=∑(g∈G)alfa(g)g∈KG, where x↦x(sigma)=∑(g∈G)alfa(g)f(g)sigma(g) is an involution of KG; here f:G→U(K) is a ...
Bódi, Viktor, Siciliano, S.
core
Thurston norm for coherent right‐angled Artin groups via L2$L^2$‐invariants
Journal of Topology, Volume 19, Issue 2, June 2026.Abstract We define a new notion of splitting complexity for a group G$G$ along a non‐trivial integral character ϕ∈H1(G;Z)$\phi \in H^1(G; \mathbb {Z})$. If G$G$ is a one‐ended coherent right‐angled Artin group, we show that the splitting complexity along an epimorphism ϕ:G→Z$\phi \colon G \rightarrow \mathbb {Z}$ equals the L2$L^2$‐Euler characteristic
Monika Kudlinska
wiley +1 more source
MODULES OVER NON-COMMUTATIVE VALUATION RINGS
, 2020 In this note, we report some results about finitely generated modules over non-commutative valuation rings. At first, we introduce some non-commutative valuation rings.
Akira Ueda
core
Twisted ambidexterity in equivariant homotopy theory
Journal of Topology, Volume 19, Issue 2, June 2026.Abstract We develop the concept of twisted ambidexterity in a parametrized presentably symmetric monoidal ∞$\infty$‐category, which generalizes the notion of ambidexterity by Hopkins and Lurie and the Wirthmüller isomorphisms in equivariant stable homotopy theory, and is closely related to Costenoble–Waner duality.
Bastiaan Cnossen
wiley +1 more source
, 2003 We present constructive versions of Krull's dimension theory for commutative rings and distributive lattices. The foundations of these constructive versions are due to Joyal, Espanol and the authors.
Lombardi, Henri,, Coquand, Thierry,
core
Transfinite idealization and commutative rings of triangular matrices
, 2009 The self-idealization of a commutative ring is iterated countably many times, producing an inverse-direct system of rings.
SALCE, LUIGI
core
Gorenstein rings and Kustin-Miller unprojection [PDF]
Chapter 1 briefly describes the motivation for the thesis and presents some background material. Chapter 2 develops the foundations of the theory of unprojection in the local and projective settings.
Papadakis, Stavros
core
On S-2-Prime Ideals of Commutative Rings
MathematicsPrime ideals and their generalizations are crucial in numerous research areas, particularly in commutative algebra. The concept of generalization of prime ideals begins with the study of weakly prime ideals.
Sanem Yavuz +3 more
doaj +1 more source
Derivations and commutativity of rings [PDF]
Pacific Journal of Mathematics, 1979 Chung, Lung O. +2 more
openaire +3 more sources
The complexity of equivalence for commutative rings
, 1990 We study the deterministic time complexity of the equivalence problems for formulas and for straight-line programs on commutative rings. A general theorem is presented, that yields sufficient conditions on a commutative ring, for these problems for the ...
Hunt, H.B., Stearns, R.E.
core +1 more source