The commutator of a Lie subalgebra and a Lie ideal is a again a Lie subalgebra
15686
Product of a Lie ideal with a subalgebra
116955
Showing the existence of a certain kind of extension of a finitely generated algebra
114626
Lie Algebra of U(N) and SO(N)
156521
Centre of Lie Algebra $sl_2(\mathbb{F})$
62917
Associated Prime Ideals in a Noetherian Ring; Exercise 6.4 in Matsumura
79650
Division Rings and Division Algebras
27766
Comaximal ideals in a commutative ring
39657
Strictly Upper Triangular $n\times n$ Matrices form a Nilpotent Lie Algebra over $\mathbb{C}$ for $n\geq 2$
123595
Representations of Direct Sum of Lie Algebras
65873
A proof for Atiyah-Macdonald Exercise I.21.iii
130792
Commutator of a group
110984
Ideals and prime ideals in a commutative ring.
105170
About product of $k$ commutators
111883
Representations of a product of Lie groups
17895
Let $R$ be a commutative ring with 1 then why does $a\in N(R) \Rightarrow 1+a\in U(R)$?
89782
To show that $\langle x-a , y-b\rangle$ is a maximal ideal of $F[x,y]$ by showing that $F[x,y]/\langle x-a , y-b\rangle$ is a field
40705
If $M$ is an $R$-module and $I\subseteq\mathrm{Ann}(M)$ an ideal, then $M$ has a structure of $R/I$-module