Results 31 to 40 of about 110,518 (119)
Positive contractive projections on noncommutative $\mathrm{L}^p$-spaces
, 2020 In this paper, we prove the first theorems on contractive projections on general noncommutative $\mathrm{L}^p$-spaces associated with non-type I von Neumann algebras where $1 < p < \infty$.
Arhancet, Cédric
core
Measuring birational derived splinters
Bulletin of the London Mathematical Society, Volume 58, Issue 5, May 2026.Abstract This work is concerned with categorical methods for studying singularities. Our focus is on birational derived splinters, which is a notion that extends the definition of rational singularities beyond varieties over fields of characteristic zero. Particularly, we show that an invariant called ‘level’ in the associated derived category measures
Timothy De Deyn +3 more
wiley +1 more source
本文提出了求解多项式方程的微分代数和向量代数框架对非交换克利福德代数设置的全面扩展。我们通过引入一个严格定义的路径排序算子 P，直接面对非交换性带来的基本障碍，该算子 P 投射到对称子空间上，同时保留基本代数结构。我们通过构造非交换克利福德代数闭包 V nc Cl，为求解在非交换克利福德代数 Cl（V， Q） 中定义的多元多项式方程组建立了完整的理论基础。求解方法为此类系统的根提供了显式分析表达式，采用统一形式：非交换牛顿恒等式和收敛分析。开发的算法通过全面的误差分析实现了 O（n 3 m 3 2 3m） 复杂度。数值验证在各种测试用例中展示了 10 −13 残差的精度。这项工作与经典的不可能性结果相协调，同时证明显式解析解存在于适当扩展的代数结构中，这些代数结构在非交换环境中结合了微分和几何运算。
Dongqi Liu, shifa liu
openaire +1 more source
Polynomial identities for quivers via incidence algebras
Bulletin of the London Mathematical Society, Volume 58, Issue 5, May 2026.Abstract We show that the path algebra of a quiver satisfies the same polynomial identities (PI) of an algebra of matrices, if any. In particular, the algebra of n×n$n\times n$ matrices is PI‐equivalent to the path algebra of the oriented cycle with n$n$ vertices.
Allan Berele +3 more
wiley +1 more source
Stabilization of Poincaré duality complexes and homotopy gyrations
Journal of the London Mathematical Society, Volume 113, Issue 5, May 2026.Abstract Stabilization of manifolds by a product of spheres or a projective space is important in geometry. There has been considerable recent work that studies the homotopy theory of stabilization for connected manifolds. This paper generalizes that work by developing new methods that allow for a generalization to stabilization of Poincaré duality ...
Ruizhi Huang, Stephen Theriault
wiley +1 more source
The structure of the classifying ring of formal groups with complex multiplication
, 2015 If $A$ is a commutative ring, there exists a classifying ring $L^A$ of formal groups with complex multiplication by $A$, i.e., "formal $A$-modules." In this paper, the basic properties of the functor that sends $A$ to $L^A$ are developed and studied ...
Salch, Andrew
core
The fundamental group of the complement of a generic fiber‐type curve
Journal of the London Mathematical Society, Volume 113, Issue 5, May 2026.Abstract In this paper, we describe and characterize the fundamental group of the complement of generic fiber‐type curves, that is, unions of (the closure of) finitely many generic fibers of a component‐free pencil F=[f:g]:CP2⤍CP1$F=[f:g]:\mathbb {C}\mathbb {P}^2\dashrightarrow \mathbb {C}\mathbb {P}^1$.
José I. Cogolludo‐Agustín +1 more
wiley +1 more source
Which singular tangent bundles are isomorphic?
Journal of the London Mathematical Society, Volume 113, Issue 5, May 2026.Abstract Logarithmic and b$ b$‐tangent bundles provide a versatile framework for addressing singularities in geometry. Introduced by Deligne and Melrose, these modified bundles resolve singularities by reframing singular vector fields as well‐behaved sections of these singular bundles.
Eva Miranda, Pablo Nicolás
wiley +1 more source
On cohomology of locally profinite sets
Proceedings of the London Mathematical Society, Volume 132, Issue 5, May 2026.Abstract We construct a locally profinite set of cardinality ℵω$\aleph _{\omega }$ with infinitely many first cohomology classes of which any distinct finite product does not vanish. Building on this, we construct the first example of a nondescendable faithfully flat map between commutative rings of cardinality ℵω$\aleph _{\omega }$ within Zermelo ...
Ko Aoki
wiley +1 more source
R. Y. Sharp, Steps in commutative algebra (London Mathematical Society Student Texts 19, Cambridge University Press, Cambridge1990) pp. xii + 321, cloth 0 521 39338 8, £30, paper 0 521 39732 4, £10.95. [PDF]
Proceedings of the Edinburgh Mathematical Society, 1992 openaire +1 more source