RT Journal Article T1 Contractions of Low-Dimensional Nilpotent Jordan Algebras A1 Margalef Bentabol, Juan A1 Ancochea Bermúdez, José María A1 Fresán, Javier AB In this article, we classify the laws of three-dimensional and four-dimensional nilpotent Jordan algebras over the field of complex numbers. We describe the irreducible components of their algebraic varieties and extend contractions and deformations among their isomorphism classes. In particular, we prove that ... and ... are irreducible and that .... is the union of the Zariski closures of the orbits of two rigid Jordan algebras. PB Informa UK Limited SN 0092-7872 YR 2011 FD 2011-03-16 LK https://hdl.handle.net/10016/39777 UL https://hdl.handle.net/10016/39777 LA eng NO The authors express their gratitude to the referee for correcting several mistakes and pointing out references [5] and [6].The first author was supported in part by MTM 2006-09152 and CC607-UCM/ESP-2922. DS e-Archivo RD 17 jul. 2024