Dyads extend vectors to provide an alternative description to second tensor rank tensors. A dyad of a pair of vectors and is defined by . The dot product is defined by
(1)

(2)

and the colon product by
(3)

Dyads extend vectors to provide an alternative description to second tensor rank tensors. A dyad of a pair of vectors and is defined by . The dot product is defined by
(1)

(2)

and the colon product by
(3)

Weisstein, Eric W. "Dyad." From MathWorldA Wolfram Web Resource. https://mathworld.wolfram.com/Dyad.html