• ← Dot
• → LeviCivitaTensor

Inner

WMA link

Inner[f, x, y, g]

computes a generalised inner product of x and y, using
a multiplication function f and an addition function g.

• • Inner[f, {a, b}, {x, y}, g]

Inner can be used to compute a dot product:

• • Inner[Times, {a, b}, {c, d}, Plus] == {a, b} . {c, d}

The inner product of two boolean matrices:

• • Inner[And, {{False, False}, {False, True}}, {{True, False}, {True, True}}, Or]

Inner works with tensors of any depth:

• • Inner[f, {{{a, b}}, {{c, d}}}, {{1}, {2}}, g]