Abstract
We study asymptotic behaviour of graded and non-graded codimensions of simple Jordan superalgebras over a field of characteristic zero. It is known that the PI-exponent of any finite-dimensional associative or Jordan or Lie algebra A is a non-negative integer less than or equal to the dimension of algebra A. Moreover, the PI-exponent is equal to the dimension if and only if A is simple provided that the base field is algebraically closed. In the present paper we prove that for a Jordan superalgebra P(t) = H(Mt∣t, trp) its non-graded and ℤ2-graded exponents are strictly less than dim P(t). In particular, exp P(2) is fractional.
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The first author was supported by the CNPq grant 304313/2019-0 and FAPESP grant 2018/23690-6.
The second author was partially supported by FAPESP grant 2019/02510-2 and by Russian Science Foundation, grant 16-11-10013-P.
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Shestakov, I., Zaicev, M. Codimension growth of simple Jordan superalgebras. Isr. J. Math. 245, 615–638 (2021). https://doi.org/10.1007/s11856-021-2221-2
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DOI: https://doi.org/10.1007/s11856-021-2221-2