ArrayDot

ArrayDot[a, b, k] computes the product of arrays a and b obtained by summing up products of terms over the last k dimensions of a and the first k dimensions of b.

ArrayDot[a, b, {{s1, t1}, {s2, t2}, ...}] computes the product over the pairs {si, ti} of dimensions.

Examples

Compute the dot product over specified dimensions:

ArrayDot[{{1, 2}, {3, 4}}, {{5, 6}, {7, 8}}, 1]

Please visit the official Wolfram Language Reference for more details.