R. Oset Sinha

collaborators

2 papers

math.AG2025

Counting $D_{4}$ singularities in the image of a wave front

C. Muñoz-Cabello, J. J. Nuño-Ballesteros, R. Oset Sinha

We give a formula to count the number of $D_{4}$ singularities in a stable frontal perturbation of a corank $2$ wave front singularity $f : (C^{3}, 0) \to (C^{4}, 0)$ …

math.AG2023

Deformations of corank $1$ frontals

C. Muñoz-Cabello, J. J. Nuño-Ballesteros, R. Oset Sinha

We develop a Thom-Mather theory of frontals analogous to Ishikawa's theory of deformations of Legendrian singularities but at the frontal level, avoiding the use of the contact set…

Counting D4​ singularities in the image of a wave front

Deformations of corank 1 frontals

Counting $D_{4}$ singularities in the image of a wave front

Deformations of corank $1$ frontals