Note on the cortex of some exponential Lie groups

Béchir Dali
2015 New York Journal of Mathematics New York J. Math   unpublished
In this paper, we built a family of 4d-dimensional two-step nilpotent Lie algebras (g d) d≥2 so that the cortex of the dual of each g d is a projective algebraic set. We also give a complete description of the cortex of the exponential connected and simply connected Lie group G = R n R.