Results 21 to 30 of about 3,053,001 (194)

The Direct Summand Conjecture in Dimension Three [PDF]

The Annals of Mathematics, 2002
14 pages, no ...
openaire   +2 more sources

MODULES WHOSE EXACT SUBMODULES ARE ESSENTIALLY EMBEDDED IN SUMMANDS

, 2022
In this article we study the condition that every exact submodule is essentially embedded in direct summands in a module. It is shown that the class of modules with former property is closed under direct sums. However, we provide examples which show that
TERCAN, ADNAN, Mutlu, Figen Takil, YAŞAR, RAMAZAN   +2 more
core   +1 more source

Relative injectivity and CS-modules

International Journal of Mathematics and Mathematical Sciences, 1994
In this paper we show that a direct decomposition of modules M⊕N, with N homologically independent to the injective hull of M, is a CS-module if and only if N is injective relative to M and both of M and N are CS-modules. As an application, we prove that
Mahmoud Ahmed Kamal
doaj   +1 more source

Persistent Tensors and Multiqudit Entanglement Transformation [PDF]

Quantum
We construct a lower bound of the tensor rank for a new class of tensors, which we call $\textit{persistent tensors}$. We present three specific families of persistent tensors, of which the lower bound is tight.
Masoud Gharahi, Vladimir Lysikov
doaj   +1 more source

Characters of permutation summands [PDF]

, 1998
A permutation lattice for a finite group G over the ring A of integers in a number field is a free A-module with a finite A-basis which is permuted by G; direct summands of these, as AG-modules, are called permutation summands for G over A.
Wang, Xiangyong
core   +1 more source

A uniform Chevalley theorem for direct summands of polynomial rings in mixed characteristic [PDF]

, 2022
We prove an explicit uniform Chevalley theorem for direct summands of graded polynomial rings in mixed characteristic. Our strategy relies on the introduction of a new type of differential powers that does not require the existence of a p-derivation on ...
De Stefani A., Grifo, Eloisa, Grifo E., De Stefani, Alessandro, Jeffries, Jack, Jeffries J.   +5 more
core   +1 more source

C4- and D4-Modules via perspective direct summands

, 2018
In this article, we study the C4- and D4-modules in terms of perspective direct summands, providing new characterizations and results. Endomorphism rings of C4-modules and extensions of right C4-rings are also investigated.
Yasser Ibrahim, Altun-Ozarslan, Meltem, Meltem Altun-Özarslan, Yousif, Mohamed, ÖZCAN, AYŞE ÇİĞDEM, Mohamed Yousif, A. Çiğdem Özcan, Ibrahim, Yasser   +7 more
core   +1 more source

Hilbert's Basis Theorem for Poisson Ore Extensions

Mathematische Nachrichten, EarlyView.
ABSTRACT We prove an analogue of Hilbert's basis theorem for Poisson Ore extensions and Poisson Laurent Ore extensions. We also obtain corresponding results for iterated Poisson Ore extensions and iterated Poisson Laurent Ore extensions associated to commuting Poisson‐pairs.
Per Bäck, Patrik Lundström, Johan Öinert, Johan Richter   +3 more
wiley   +1 more source

Homogeneous coordinate rings as direct summands of regular rings

, 2022
We study the question of when a ring can be realized as a direct summand of a regular ring by examining the case of homogeneous coordinate rings. We present very strong obstacles to expressing a graded ring with isolated singularity as a finite graded ...
Mallory, Devlin
core  

Novel Bernstein‐Kantorovich Type Operators

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT In this paper, we introduce a novel class of Bernstein‐Kantorovich operators, denoted as Kβn,θ$$ {K}_{\beta}^{n,\theta } $$, parameterized by 0<β<1$$ 0<\beta <1 $$ and θ>0$$ \theta >0 $$. We first derive a recurrence formula that facilitates the computation of moments and central moments and provide explicit expressions for Kβn,θ(tm;x)$$ {K}_{\
Pembe Sabancigil, Nazim I. Mahmudov
wiley   +1 more source