Are those true words?

More Yaser Maleki's questions See All

Is there any example of simple Abelian ring R which is not domain?

A ring R is simple if it has no two-sided ideal. A ring R is Abelian if each idempotent in R is central and R is domain if for each a,b in R, ab=0 implies that a=0 or b=0.

01 February 2020 6,516 7 View

What is the equivalent conditions for strongly \pi regular rings?

hello im looking for a equivalent conditions for strpngly \pi regular rings. a ring R is said to be strongly \pi regular if for each x in R there exist a y in R such that x^n = (x ^(n+1))y. do...

31 December 2018 1,814 3 View

Dose 'endomorphism ring of power series rings' has a special properties ?

hi i want to know about endomorphism ring of power series rings. if anyone know about that or road a paper about that please share it with me. thank you

03 April 2018 9,585 2 View

Idempotent in strongly $\pi$ regular rings?

What is the idempotent in strongly pi regular rings? Is them trival or have a special property? A ring R is said to be strongly pi regular if for each a in R we can find some x in R such that...

09 October 2017 8,564 1 View

Why 1+(er-ere) is a unit?

let R be a ring and e be a idempotent and r is an element of a ring R why 1+(er-ere) is a unit?

06 July 2016 8,976 1 View

What is algebra???

My friend is a art student and he was asked from me : what is algebra?? He dont know any things about group or ring &... Suppose he don't know any things about mathematics !!!!!! How can...

31 December 2015 7,874 2 View

I don't see why 1 can be written as this finite sum in semisimple ring?

"The simple submodules of R (as a module over R ) are exactly the minimal left ideals of R . So R=⨁ S i where each S i is a minimal left ideal...'' Then comes the part that I don't...

01 February 2015 907 11 View

What is the difference between mathematical R^4 space and physical 4D unit space?

We assume that the difference is huge and that it is not possible to compare the two spaces. The R^4 mathematical space considers time as an external controller and the space itself is immobile in...

10 August 2024 6,678 14 View

Is it possible to plot the atom-projected band structure using GPAW?

Hi, I'm currently working on a project where I need to plot the atom-projected band structure using GPAW. I've been able to calculate the band structure for my material, but I'm having trouble...

07 August 2024 269 3 View

Should I include H atom into C3N5 when i am doing DFT modelling?

Hi all, my experimental XPS results shown that my C3N5 sample consists of N-H bond, hence in this case I should incorporate the N-H bond into my DFT modelling. However, I do notice several papers...

07 August 2024 8,414 2 View

Are there any good simple systems or platforms to recommend?

In order to show people the beauty of control and enhance enthusiasm for learning control theories, are there any good simple systems or platforms to recommend?

05 August 2024 10,034 1 View

Why do exism movements become permanent dictatorship threats within liberal democracy thinking under majority rule-independent rule of law system?

Exism movements after gaining power within liberal democracies under majority rule and independent rule of law system become permanent dictatorship threats, but why this is the case is not clear...

04 August 2024 8,125 3 View

How to use Density Functional Theory to calculate carrier mobilities of solid system?

Hello, everyone. I have tried to determine carrier motilities of some materials, by Density Functional Theory, using Quantum ESPRESSO. There are a few methods to do it, like a package called...

04 August 2024 8,894 1 View

How can I calculate formation energy using VASP-Ab-initio?

I would like to calculate the formation energy of P2-Na0.67Fe0.5Mn0.5O2 based on DFT, what should I do step by step. Any help would be appreciated. Thanks.

29 July 2024 8,248 2 View

Ternary in Electrical Engineering?

Dear Research Community I would like to invite Elctrical Engineering specialists to solve problems related to Ternary Algebra or tripple sets I have an algorithm that places in relation three...

28 July 2024 5,771 2 View

In terms of chaos, what is the necessary and sufficient condition for authoritarianism, permanent or temporary, to come to exist and persist?

Since 2016 Brexit, the world needed to change the thinking behind traditional democracy as the democratic landscape changed, yet traditional democratic thinkers and actors have been acting as if...

28 July 2024 6,515 1 View

What is effective targeted chaos?

Perfect democracy thinking assumes no chaos so no need for independent rule of law system and liberal democracies assume the possibility of normal democratic chaos that can be sorted out by an...

28 July 2024 473 1 View