The basic symbol of multiplication is the multiplication sign "×".
163 1 year, Oughtred used "x" to represent the multiplication of two numbers for the first time in his book clavis mathematicae, which is a modern multiplication symbol. It became more and more popular and has been used ever since. In a letter from/kloc-0 to J. Bernoulli on July 29th, 698, Leibniz proposed to use the dot "x" to represent multiplication, so as to avoid confusion between "x" and the letter X. Later, it was quite popular to use "x" to represent multiplication. At present, schools in continental Europe (Germany, France, the Soviet Union and other countries) all stipulate ""as the multiplication sign. Other countries use "×" as multiplication sign and "×" as decimal point. Our country stipulates that "×" or "×" can be used as a multiplication sign, and the multiplication sign before letters or brackets can be omitted.
This point means "multiply".
In mathematics, dot product (dot product; Scalar product (also known as dot product and dot multiplication) is a binary operation, which accepts two vectors on the real number R and returns a real scalar. It is the standard inner product of Euclidean space.