Vector addition is represented with the plus sign used as an operator between two vectors. They are equivalent to rotation matrices and rotation vectors. There are a total of nine possibilities using scalars, vectors, and matrices. SIMD instructions have the ability of manipulating large vectors and matrices in minimal time. Plasmids are the most-commonly used bacterial cloning vectors. The Jones matrices are operators that act on the Jones vectors defined above. Examples include vertices, colors, normal vectors, and texture coordinates. The velocity triangles are constructed using these various velocity vectors. Note that not all of the formula 26 vectors of coefficients are uniquely identifiable. The subtraction in the numerator is the subtraction of vectors, not scalars. There are numerous ways to multiply two Euclidean vectors. The metric can be used for raising and lowering indices on vectors and tensors. See also Covariance and contravariance of vectors. Recall that every basis of consists of exactly linearly independent vectors. This ensures the orthogonality of all the generated vectors.