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This paper presents an extension of the concept of NR-clean introduced in [12] to graded ring theory. We define and explore graded NR-clean rings, which generalize the class of graded U-nil clean previously studied in [15]. We provide…

Commutative Algebra · Mathematics 2024-01-23 Ismail Namrok

The paper glosses different forms of an introducing of higher order tangent-like functors, especially functors derived from higher order nonholonomic tangent functors. A special attention is devoted to higher order osculating bundles: their…

Differential Geometry · Mathematics 2012-02-15 Miroslav Kureš

In this century, a square-tiled translation surface (an origami) is intensively studied as an object with special properties of its translation structure and its $SL(2,\mathbb{R})$-orbit embedded in the moduli space. We generalize this…

Geometric Topology · Mathematics 2022-07-25 Shun Kumagai

Higher diameters of Cayley digraphs are defined and studied.

Combinatorics · Mathematics 2025-06-19 G. C. Magda , J. Rubin , S. Streipert , C. Watt , A. Kumar , G. P. Constantine

We survey recent results on resolutions of Hibi rings.

Commutative Algebra · Mathematics 2014-09-09 Viviana Ene

In this paper, I survey frame starters, as well as orthogonal and strong frame starters, in abelian groups. I mainly recall and re-examine existence and nonexistence results, but I will prove some new results as well.

Combinatorics · Mathematics 2022-08-25 Douglas R. Stinson

Several authors have introduced various type of coherent-like rings and proved analogous results on these rings. It appears that all these relative coherent rings and all the used techniques can be unified. In [2], several coherent-like…

Commutative Algebra · Mathematics 2020-09-01 Mostafa Amini , Arij Benkhadra , Bennis , Mohammed Hajoui

This paper introduces and studies the higher-order group inverse in a ring. We extend known properties of the higher-order group inverse from complex matrices to elements of a ring and, in the process, derive new results. We further…

Rings and Algebras · Mathematics 2026-02-17 Liu Dayong , Chen Huanyin

We introduce quasi-Prufer extensions of rings in order to relativize the notion of quasi-Prufer domains and to take into account some contexts recently introduced in the literature. We also introduce almost-Prufer ring extensions.…

Commutative Algebra · Mathematics 2016-11-01 Gabriel Picavet , Martine Picavet-L'Hermitte

The notion of local rings with quasi-decomposable maximal ideal was formally introduced by Nasseh and Takahashi. In separate works, the authors of the present paper show that such rings have rigid homological properties; for instance, they…

Commutative Algebra · Mathematics 2023-08-30 Saeed Nasseh , Keri Ann Sather-Wagstaff , Ryo Takahashi

In this paper, we introduce and study the rings of Gorenstein homological dimensions small or equal than 1, which we call Gorenstein (semi)hereditary rings, specially particular cases of these rings, which we call strongly Gorenstein…

Commutative Algebra · Mathematics 2009-07-25 Najib Mahdou , Mohammed Tamekkante

The present paper studies structure of the ring of integer-valued entire functions. We characterize certain classes of prime and maximal ideals and investigate some of their properties.

Complex Variables · Mathematics 2021-10-26 Béchir Amri

This paper is devoted to a discussion of specific properties of invariants in the theory of forms.

Analysis of PDEs · Mathematics 2010-07-02 Mehdi Nadjafikhah , Parastoo Kabi-Nejad

This paper discusses some topics of enquiry concerning fractals, functions on them, and so on.

Classical Analysis and ODEs · Mathematics 2007-05-23 Stephen Semmes

This paper is devoted to present some characterizations for a local ring to be generically Gorenstein and Gorenstein by means of $\delta$-invariant and linkage theory.

Commutative Algebra · Mathematics 2018-11-28 Mohammad T. Dibaei , Yaser Khalatpour

Sobolev orthogonal polynomials have been studied extensively in the past 20 years. The research in this field has sprawled into several directions and generates a plethora of publications. This paper contains a survey of the main…

Classical Analysis and ODEs · Mathematics 2014-03-26 F. Marcellan , Y. Xu

This is a survey article on classical groups (over arbitrary division rings) and their geometries.

Group Theory · Mathematics 2007-05-23 Linus Kramer

A surface is considered flexible if it allows a continuous deformation that preserves both metric and smoothness. We introduce a novel construction method, called 'base + crinkle,' for generating a broad class of non-self-intersecting…

Metric Geometry · Mathematics 2025-11-11 Zeyuan He , Simon D. Guest

We investigate ideal-semisimple and congruence-semisimple semirings. We give several new characterizations of such semirings using e-projective and e-injective semimodules. We extend several characterizations of semisimple rings to (not…

Rings and Algebras · Mathematics 2019-08-02 Jawad Y. Abuhlail , Rangga Ganzar Noegraha

The Bernoulli numbers are fascinating and ubiquitous numbers, they occur in several domains of Mathematics like Number theory (FLT), Group theory, Calculus and even in Physics. Since Bernoulli's work, they are yet studied to understand…

Number Theory · Mathematics 2016-12-13 Abdelmoumène Zekiri , Farid Bencherif
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