New posts in Lie Algebras

The matrix function $\frac{e^x - 1}{x}$ for non-invertible matrices

Name and layperson's explanation for an E8 group diagram.

Jordan normal form of sum of two commuting nilpotent matrices over a finite field (variant on a linear matrix pencil problem)

Determine the lie algebra of the subgroup of SO(4)

Skew-symmetric, Time Dependent, Linear Ordinary Differential Equations

Finding infinitesimal Mobius transformations

For a connected, simply connected Lie group what does the Lie algebra tell me?

Associative Lie algebra

What is the adjoint representation of $\operatorname{GL}_n(\mathbb{R})$?

How are $SU(n)$, $SL(n)$ and $\mathfrak{sl}(n,\mathbb{C})$ related?