d . {\displaystyle a={\frac {bc}{d}}.} Another justification of cross-multiplication is as follows. Starting with the given equation a b = c d , {\displaystyle...

multiplication sign (×), also known as the times sign or the dimension sign, is a mathematical symbol used to denote the operation of multiplication,...

product in a Künneth theorem A crossed product in von Neumann algebras A Cartesian product in set theory Cross-multiplication This disambiguation page lists...

Multiplication (often denoted by the cross symbol ×, by the mid-line dot operator ⋅, by juxtaposition, or, on computers, by an asterisk *) is one of the...

matrix multiplication since matrix multiplication is associative. Three-dimensional Euclidean space with multiplication given by the vector cross product...

Because matrix multiplication is such a central operation in many numerical algorithms, much work has been invested in making matrix multiplication algorithms...

In mathematics, vector multiplication may refer to one of several operations between two (or more) vectors. It may concern any of the following articles:...

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is on the right. It is so straightforward it does not require any cross-multiplication rules. It employs just the basic juxtaposition of the inbreeding...

to the plane spanned by x and y, it is possible to find a cross product with a multiplication table (and an associated set of basis vectors) such that...