Thomsen Surfaces in Affine 4-Space.
Affine higher order parallel hypersurfaces
Centroaffine differential geometry and its relations to horizontal submanifolds
We relate centroaffine immersions to horizontal immersions g of Mⁿ into or . We also show that f is an equiaffine sphere, i.e. the centroaffine normal is a constant multiple of the Blaschke normal, if and only if g is minimal.
The lattice of -subalgebras of a bounded distributive lattice
The 0-distributivity in the class of subalgebra lattices of Heyting algebras and closure algebras
Homogeneous affine hypersurfaces with rank one shape operators.
The classification of 3-dimensional locally strongly convex homogeneous affine hypersurfaces.
Improper affine spheres and δ-invariants
We introduce an inequality for graph hypersurfaces and prove a decomposition theorem in case equality holds.
The subalgebra lattice of a Heyting algebra
Some remarks on isotropic submanifolds.
3-type Curves on Hyperboloids of Revolution and Cones of Revolution
Affine spheres with constant affine sectional cuvature.
Surfaces with prescribed Weingarten operator
We investigate pairs of surfaces in Euclidean 3-space with the same Weingarten operator in case that one surface is given as surface of revolution. Our local and global results complement global results on ovaloids of revolution from S-V-W-W.
Minimal tensor product immersions.
Slant surfaces with prescribed Gaussian curvature.
A new intrinsic curvature invariant for centroaffine hypersurfaces.
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