Results 131 to 140 of about 8,427,358 (293)

Rad-⊕-Supplemented Modules

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2013
In this paper we provide various properties of Rad-⊕-supplemented modules. In particular, we prove that a projective module M is Rad- ⊕-supplemented if and only if M is ⊕-supplemented, and then we show that a commutative ring R is an artinian serial ring
Türkmen Ergül
doaj   +1 more source

Critical properties of the four-state commutative random permutation glassy Potts model in three and four dimensions [PDF]

open access: green, 2008
L. A. Fernández   +7 more
openalex   +1 more source

Commutative Properties of Head Direction Cells during Locomotion in 3D: Are All Routes Equal? [PDF]

open access: hybrid, 2020
Patrick A. LaChance   +4 more
openalex   +1 more source

On the isomorphism problem for monoids of product‐one sequences

open access: yesBulletin of the London Mathematical Society, EarlyView.
Abstract Let G1$G_1$ and G2$G_2$ be torsion groups. We prove that the monoids of product‐one sequences over G1$G_1$ and over G2$G_2$ are isomorphic if and only if the groups G1$G_1$ and G2$G_2$ are isomorphic. This was known before for abelian groups.
Alfred Geroldinger, Jun Seok Oh
wiley   +1 more source

Universal lifts of chain complexes over non-commutative parameter algebras [PDF]

open access: yesarXiv, 2007
We define the notion of universal lift of a projective complex based on non-commutative parameter algebras, and prove its existence and uniqueness. We investigate the properties of parameter algebras for universal lifts.
arxiv  

Remarks on τ$\tau$‐tilted versions of the second Brauer–Thrall conjecture

open access: yesBulletin of the London Mathematical Society, EarlyView.
Abstract In this short note, we state a stable and a τ$\tau$‐reduced version of the second Brauer–Thrall conjecture. The former is a slight strengthening of a brick version of the second Brauer–Thrall conjecture raised by Mousavand and Schroll–Treffinger–Valdivieso.
Calvin Pfeifer
wiley   +1 more source

Discrete subgroups of normed spaces are free

open access: yesBulletin of the London Mathematical Society, EarlyView.
Abstract Ancel, Dobrowolski and Grabowski (Studia Math. 109 (1994): 277–290) proved that every countable discrete subgroup of the additive group of a normed space is free Abelian, hence isomorphic to the direct sum of a certain number of copies of the additive group of the integers.
Tomasz Kania, Ziemowit Kostana
wiley   +1 more source

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