einstein_product
Return the Einstein product of the input. The Einstein product of two real scalars x and y is: (x * y) / (2 - (x + y - x * y))
For one vector argument, apply the Einstein product to all of the elements of the vector. (The Einstein product is associative.) For one two-dimensional matrix argument, return a vector of the Einstein product of each column.
For two vectors or matrices of identical dimensions, or for one scalar and one vector or matrix argument, return the pairwise Einstein product.
See also: algebraic_product, algebraic_sum, bounded_difference, bounded_sum, drastic_product, drastic_sum, einstein_sum, hamacher_product, hamacher_sum