Results 41 to 50 of about 315,833 (178)

Permanently Weak Amenability of Rees Semigroup Algebras

open access: yesInternational Journal of Analysis and Applications, 2018
In this paper, we consider n-weak amenability of full matrix algebras and we prove that the Rees semigroup algebra is permanently weakly amenable.
Hassan Hosseinzadeh, Ali Jabbari
doaj   +2 more sources

The Rees Algebra of a monomial plane parametrization

open access: yesJournal of Symbolic Computation, 2015
36 pages, latex file.
Teresa Cortadellas Benítez   +1 more
openaire   +2 more sources

Welcome to the jangle (fallacy): The case of statistics and mathematics anxieties

open access: yesBritish Journal of Educational Psychology, EarlyView.
Abstract Background Statistics‐related anxiety is a common barrier to learning in higher education, particularly for psychology and other non‐specialist students. High prevalence rates are concerning because statistical literacy is integral to academic success, employability and informed citizenship.
Jenny Terry, Charlie Lea, Andy P. Field
wiley   +1 more source

Chorus Wave‐Induced Ionospheric Variability

open access: yesGeophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract Electron microbursts are short‐lived but intense electron precipitation and constitute a significant source of electron losses into the ionosphere and lower atmosphere. They are primarily produced by wave‐particle interaction with chorus waves in the magnetosphere.
Lunjin Chen   +5 more
wiley   +1 more source

Equations of the multi-Rees algebra of fattened coordinate subspaces

open access: yes, 2023
In this paper we describe the equations defining the multi-Rees algebra $k[x_1,\dots,x_n][I_1^{a_1}t_1,\dots,I_r^{a_r}t_r]$, where the ideals are generated by subsets of $x_1,\dots,x_n$.
Babak Jabbar Nezhad   +1 more
core   +1 more source

Rees algebras of diagonal ideals

open access: yesJournal of Commutative Algebra, 2013
There is a natural epimorphism from the symmetric algebra to the Rees algebra of an ideal. When this epimorphism is an isomorphism, we say that the ideal is of linear type. Given two determinantal rings over a field, we consider the diagonal ideal, the kernel of the multiplication map.
openaire   +3 more sources

Homological Algebra for Superalgebras of Differentiable Functions [PDF]

open access: yes, 2012
This is the second in a series of papers laying the foundations for a differential graded approach to derived differential geometry (and other geometries in characteristic zero). In this paper, we extend the classical notion of a dg-algebra to define, in
Sub Algebra,Geometry&Mathem. Logic begr.   +2 more
core   +1 more source

On Rees algebras of 2‐determinantal ideals

open access: yesJournal of the London Mathematical Society, 2023
AbstractLet be the ideal of minors of a matrix of linear forms with the expected codimension. In this paper, we prove that the Rees algebra of and its special fiber ring are Cohen–Macaulay and Koszul; in particular, they are quadratic algebras.
Ritvik Ramkumar, Alessio Sammartano
openaire   +3 more sources

From points to complexes: A concept of unexpectedness for simplicial complexes

open access: yesJournal of the London Mathematical Society, Volume 114, Issue 1, July 2026.
Abstract In 2018, Cook, Harbourne, Migliore, and Nagel introduced the concept of unexpected hypersurfaces, which connects the study of Lefschetz properties of Artinian algebras defined by powers of linear forms to a family of interpolation problems.
Thiago Holleben
wiley   +1 more source

Rees algebras of conormal modules

open access: yesJournal of Pure and Applied Algebra, 2004
We deal with classes of prime ideals whose associated graded ring is isomorphic to the Rees algebra of the conormal module in order to describe the divisor class group of the Rees algebra and to examine the normality of the conormal module.
openaire   +2 more sources

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