

Which China is already working on and are as far as test flights.
Of course the US and China both have some kinds of stealthy fighter jets. That does’t mean that China has what the US has (or will have).
Or does “next-generation” have a specific meaning, other than “better”?
When I went to college the dot was used for the dot product (scalar product) of two vectors while the cross was used for the cross product (vector product) of two vectors.
Since in this case numbers (read: one-dimensional vectors) are multiplied, the dot product is used, which should be denoted by a dot.
(But really, if I were to write a formula in Latex I would just use the * symbol, too.)