Abstract
We classify singularities of lightlike hypersurfaces in Minkowski 4-space via the contact invariants for the corresponding spacelike surfaces and lightcones.
Citation
Shyuichi Izumiya. Marek Kossowski. Donghe Pei. M. Carmen Romero Fuster. "Singularities of lightlike hypersurfaces in Minkowski four-space." Tohoku Math. J. (2) 58 (1) 71 - 88, 2006. https://doi.org/10.2748/tmj/1145390206
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