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Recall that using the Levi-Cevita symbol the determinant can be written as $$\operatorname{det} A=\frac{1}{n!}\epsilon_{i_1\dots i_n}\epsilon_{j_1\dots j_n}A_{i_1j_1}\dots A_{i_nj_n}$$ Some computations that I do recently turned out to produce objects of the type

$$\epsilon_{i_1\dots i_n}\epsilon_{j_1\dots j_n}\epsilon_{k_1\dots k_n}\epsilon_{l_1\dots l_n}T_{i_1j_1k_1l_1}\dots T_{i_nj_nk_nl_n}$$ which look like a freshmen-style generalization of determinant to tensors. In my computations only even-rank tensors appear.

Is there a name for such things? Do they have any interesting properties?

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  • $\begingroup$ math.stackexchange.com/q/1213130 Hey! This might be exactly what you're looking for :) $\endgroup$
    – Moritz
    Commented Feb 2, 2020 at 22:51
  • $\begingroup$ @MoritzEissler Thanks for the link! The question there is indeed the same, but the answer just states the formula from my post without giving it a name of explaining why is that a good definition. Another suggestion was to check out hyperdeterminant, but as far as I can see it is different from my formula. $\endgroup$ Commented Feb 3, 2020 at 9:08
  • $\begingroup$ One interesting property is that this determinant is $0$ when the tensors have an odd number of indices. $\endgroup$ Commented Feb 3, 2020 at 10:01

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