Results classify isolated singularities and reveal modality behavior in hypersurfaces, indicating deeper structures in positive characteristic.
This paper generalizes existing methods to derive stronger bounds on the modality of hypersurface singularities. Our results demonstrate that each sudden jump in the Tjurina number necessarily increases the modality. Furthermore, we provide a full classification of unimodal isolated hypersurface singularities in characteristic p > 3 under contact equivalence. Keywords. isolated singularity, classification, modality, positive characteristic.
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Ma et al. (2025) studied this question.
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