A generalization of the matrix to an array of numbers.
Hypermatrix
See also
HyperdeterminantExplore with Wolfram|Alpha
References
Gel'fand, I. M.; Kapranov, M. M.; and Zelevinsky, A. V. "Hyperdeterminants." Adv. Math. 96, 226-263, 1992.Referenced on Wolfram|Alpha
HypermatrixCite this as:
Weisstein, Eric W. "Hypermatrix." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/Hypermatrix.html