# Tag Info

Accepted

### Is the restriction of the Cartan 3-form on conjugacy classes exact?

Yes, it is exact, and there is in fact a canonical 2-form on each conjugacy class whose derivative is your $\Omega$. This was an important observation when studying D-branes in WZW models, see, e.g. ...
• 3,789
1 vote
Accepted

### Degenerate representation

Suppose $V = \mathbb{R}^n$ has a basis $(e_1,\dots,e_n)$. Your assumption is that you have a family of linear maps $\lambda_1,\dots,\lambda_m \in V^*$ which are defined such that \$\lambda_r(e_i) = \...
• 2,642