RT info:eu-repo/semantics/article
T1 The Tjurina Number for Sebastiani–Thom Type Isolated Hypersurface Singularities
A1 Almirón, Patricio
AB In this note, we provide a formula for the Tjurina number of a join of isolated hypersurface singularities in separated variables. From this, we are able to provide a characterization of isolated hypersurface singularities whose difference between the Milnor and Tjurina numbers is less or equal than two arising as the join of isolated hypersurface singularities in separated variables. Also, we are able to provide new upper bounds for the quotient of Milnor and Tjurina numbers of certain join of isolated hypersurface singularities. Finally, we deduce an upper bound for the quotient of Milnor and Tjurina numbers in terms of the singularity index of any isolated hypersurface singularity, not necessarily a join of singularities.
SN 1660-5446
YR 2023
FD 2023
LK https://uvadoc.uva.es/handle/10324/82772
UL https://uvadoc.uva.es/handle/10324/82772
LA eng
NO Almirón, P. The Tjurina Number for Sebastiani–Thom Type Isolated Hypersurface Singularities. Mediterr. J. Math. 20, 258 (2023)
NO Producción Científica
DS UVaDOC
RD 04-mar-2026