HELICOIDAL SURFACES IN THE THREE-DIMENSIONAL LORENTZ-MINKOWSKI SPACE SATISFYING Δ~(II)r = Ar

摘要

In this paper we study the helicoidal surfaces in the three-dimensional Lorentz-Minkowski space under the condition Δ~(II)r = Ar, where A is a real 3 × 3 matrix and Δ~(II) is the Laplace operator with respect to the second fundamental form.