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math.AG2020
On a quadratic form associated with a surface automorphism and its applications to Singularity Theory
Lilia Alanís-López, Enrique Artal Bartolo, Christian Bonatti +3
We study the nilpotent part of a pseudo-periodic automorphism of a real oriented surface with boundary . We associate a quadratic form defined on the first homology…
math.AC2020
-thresholds and test ideals of Thom-Sebastiani type polynomials
Manuel González Villa, Delio Jaramillo-Velez, Luis Núñez-Betancourt
We provide a formula for -thresholds of a Thom-Sebastiani type polynomial over a perfect field of prime characteristic. This result extends the formula for the -pure threshol…