Tuan Anh Pham

collaborators

2 papers

math.RA2025

The Kernel and Image of Orbit Homomorphisms for the Witt Algebra

Tuan Anh Pham, James Timmins

The Witt algebra $W_{\geq - 1}$ is the Lie algebra of algebraic vector fields on a line. We investigate the two-sided ideal structure of its universal enveloping algebra, by studyin…

math.RA2025

The orbit method for the Virasoro algebra

Tuan Anh Pham

Let $W = C [t, t^{- 1}] \partial_{t}$ be the Witt algebra of algebraic vector fields on $C^{\times}$ and let $V i r$ be the Virasoro algebra, the unique nontrivial centr…