English

Partial determinants of Kronecker products

Rings and Algebras 2018-01-15 v2

Abstract

Let det2(A)\det_2(A) be the block-wise determinant (partial determinant). We consider the condition for completing the determinant det(det2(A))=det(A),\det(\det_2(A)) = \det(A), and characterize the case for an arbitrary Kronecker product AA of matrices over an arbitrary field. Further insisting that det2(AB)=det2(A)det2(B)\det_2(AB)=\det_2(A)\det_2(B), for Kronecker products AA and BB, yields a multiplicative monoid of matrices. This leads to a determinant-root operation Det\text{Det} which satisfies Det(Det2(A))=Det(A)\text{Det}(\text{Det}_2(A)) = \text{Det}(A) when AA is a Kronecker product of matrices for which Det\text{Det} is defined.

Keywords

Cite

@article{arxiv.1709.10253,
  title  = {Partial determinants of Kronecker products},
  author = {Yorick Hardy},
  journal= {arXiv preprint arXiv:1709.10253},
  year   = {2018}
}
R2 v1 2026-06-22T21:58:33.940Z