List questions from idempotents

Published on 17 Jun 2019 - 7:46

79

Views

If $e^2 = e$ in a ring $R$ [not necessarily commutative], then $Re$ is an ideal iff $eR(1-e) = 0$

Published on 27 Jun 2019 - 18:43

178

Views

Idempotent automorphisms

Published on 03 Jul 2019 - 5:55

431

Views

The only idempotent element in $\Bbb Z_{51}$ are $0$ and $1$.

Published on 25 Mar 2026 - 10:56

123

Views

Finite Boolean ring with $1 \neq 0$ is isomorphic to $\mathbb{Z}_2\times \mathbb{Z}_2 \times \dots \times \mathbb{Z}_2$

Published on 22 Mar 2026 - 14:53

66

Views

If $e_1,\dots,e_n\in R$ are idempotent then $\langle e_1,\dots,e_n\rangle=\langle d\rangle$ for some idempotent $d\in R$

Published on 20 Aug 2019 - 16:20

149

Views

Local idempotents in a von Neumann regular rings

Published on 31 Aug 2019 - 5:12

80

Views

Idempotent elements in modulo n ring that is "split" in at least two other rings

Published on 31 Aug 2019 - 10:53

902

Views

Constructing a centrally primitive idempotent in the group algebra of the symmetric group

Published on 25 Mar 2026 - 6:12

51

Views

Non-prime power idempotents

Published on 10 Sep 2019 - 21:12

110

Views

G-inverse and idempotent

Published on 23 Sep 2019 - 2:36

127

Views

Is there a nilpotent and idempotent pair such that their product is the identity matrix?

Published on 25 Mar 2026 - 16:14

663

Views

Square Idempotent matrix: efficient algorithms for finding eigenvectors

Published on 19 Mar 2014 - 19:05

939

Views

Idempotent Elements of a Commutative Ring

Published on 08 May 2014 - 2:57

2.7k

Views

Ring with non-trivial idempotent splitting as product of two rings

Published on 11 May 2014 - 9:02

List Question

Idempotent elements in a modulo n ring

If $e^2 = e$ in a ring $R$ [not necessarily commutative], then $Re$ is an ideal iff $eR(1-e) = 0$

Idempotent automorphisms

The only idempotent element in $\Bbb Z_{51}$ are $0$ and $1$.

Finite Boolean ring with $1 \neq 0$ is isomorphic to $\mathbb{Z}_2\times \mathbb{Z}_2 \times \dots \times \mathbb{Z}_2$

If $e_1,\dots,e_n\in R$ are idempotent then $\langle e_1,\dots,e_n\rangle=\langle d\rangle$ for some idempotent $d\in R$

Local idempotents in a von Neumann regular rings

Idempotent elements in modulo n ring that is "split" in at least two other rings

Constructing a centrally primitive idempotent in the group algebra of the symmetric group

Non-prime power idempotents

G-inverse and idempotent

Is there a nilpotent and idempotent pair such that their product is the identity matrix?

Square Idempotent matrix: efficient algorithms for finding eigenvectors

Idempotent Elements of a Commutative Ring

Ring with non-trivial idempotent splitting as product of two rings

Trending Questions

Popular # Hahtags

Popular Questions