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math.DG2025
Isometry groups of simply connected nonunimodular Lie groups of dimension four
Youssef Ayad
For each left-invariant Riemannian metric on simply connected nonunimodular Lie groups of dimension four, we determine the full group of isometries.
math.DG2025
Classification of left invariant Riemannian metrics on nonunimodular 4-dimensional Lie groups
Malika Ait Ben Haddou, Youssef Ayad
We classify, up to automorphism, left invariant Riemannian metrics on 4-dimensional simply connected nonunimodular Lie groups. This is equivalent to classifying, up to automorphism…