On the geometry of the adjoint representation of a Chevalley group (Q1263673)

Let L be the Lie algebra of a linear algebraic group G over a field of arbitrary characteristic. The subalgebras of L corresponding to long root subgroups are called long root subalgebras of L. Subalgebras of L generated by long root subalgebras are called long subalgebras. The main theorem: Let L correspond to a simple group G of type different from \(C_ n\) and \(A_ 1\). Then L has a presentation with generators the elements of its long root subalgebras, subject to those relations that hold inside long \(A_ 2\)-subalgebras.