25 citations
- Medical University PlovdivBG3 papers
- Babeș-Bolyai UniversityRO1 paper
- Dubna State UniversityRU1 paper
- Faculty of Public HealthGB1 paper
- Joint Institute for Nuclear ResearchRU1 paper
- Memorial University of NewfoundlandCA1 paper
- Sofia University "St. Kliment Ohridski"BG1 paper
- Technological University of TajikistanTJ1 paper
- United Arab Emirates UniversityAE1 paper
- University of LimerickIE1 paper
- University of SheffieldGB1 paper
5 papers · 1 filter
Rings in which every element is either a sum or a difference of a nilpotent and an idempotent
Simion Breaz, Peter Danchev, Yiqiang Zhou
{Generalizing the notion of nil cleanness from \cite{D13}, in parallel to \cite{DM14}, we define the concept of {\it weak nil cleanness} for an arbitrary ring. Its comprehensive st…
Generalizing pi-regular rings
Peter Danchev, Janez Šter
We introduce the class weakly nil clean rings, as rings R in which for every a\in R there exist an idempotent e and a nilpotent q such that a-e-q\in eRa. Every weakly nil clean rin…
On canonical-type connections on almost contact complex Riemannian manifolds
Mancho Manev
We consider a pair of smooth manifolds, which are the counterparts in the even-dimensional and odd-dimensional cases. They are separately an almost complex manifold with Norden met…
Lie groups as 3-dimensional almost contact B-metric manifolds
Hristo Manev, Dimitar Mekerov
The object of investigations are almost contact B-metric structures on 3-dimensional Lie groups considered as smooth manifolds. There are established the existence and some geometr…
On the structure tensors of almost contact B-metric manifolds
Hristo Manev
The space of the structure (0,3)-tensors of the covariant derivatives of the structure endomorphism and the metric on almost contact B-metric manifolds is considered. A known decom…