I have been wondering if the following dot product definition for the $n$-coordinate vectors $a$ and $b$ has a name: $$ = \sum_{i=1}^{n} a_i*b_{n-i+1},$$ rather than the classical dot product: $$ = \sum_{i=1}^n a_i*b_{i}.$$ Did you already seen it use somewhere?
Thanks a lot.