Introduces an invariant to assess intersection stability in plane curve singularities, suggesting robustness under perturbation.
We introduce, for any pair of plane curve singularities, a new computable invariant λ(f, g) and prove that the intersection multiplicity of f and g is stable under small perturbations of degree at least λ(f, g).
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Nguyen et al. (2026) studied this question.
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