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math.AG2026
Quadratic Segre indices
Felipe Espreafico, Stephen McKean, Sabrina Pauli
We prove that the local Euler class of a line on a degree hypersurface in projective space is given by a product of indices of Segre involutions. Segre involutions and…
math.AG2025
Computing A1-Euler numbers with Macaulay2
Sabrina Pauli
We use Macaulay2 for several enriched counts in GW(k). First, we compute the count of lines on a general cubic surface using Macaulay2 over Fp in GW(Fp) for p a prime number and ov…
math.AG2024
Quadratically Enriched Tropical Intersections
Andrés Jaramillo Puentes, Sabrina Pauli
Using tropical geometry one can translate problems in enumerative geometry to combinatorial problems. Thus tropical geometry is a powerful tool in enumerative geometry over the com…