112 citations · 144 across the 22 of their papers we have counts for
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Real non-degenerate two-step nilpotent Lie algebras of dimension eight
Mikhail Borovoi, Bogdan Adrian Dina, Willem A. de Graaf
We classify the non-degenerate two-step nilpotent Lie algebras of dimension 8 over the field of real numbers, using known results over complex numbers. We write explicit structure…
Non-virtually abelian discontinuous group actions vs. proper SL(2,R)-actions on homogeneous spaces
Maciej Bochenski, Willem A. de Graaf, Piotr Jastrzebski +1
We develop algorithms and computer programs which verify criteria of properness of discrete group actions on semisimple homogeneous spaces. We apply these algorithms to find new ex…
Computing with nilpotent orbits in simple Lie algebras of exceptional type
Willem de Graaf
Let G be a simple algebraic group over an algebraically closed field with Lie algebra g. Then the orbits of nilpotent elements of g under the adjoint action of G have been classifi…