Wavelets are short wavelike functions that can be scaled and translated. Wavelet transforms take any signal and express it in terms of scaled and translated wavelets. The ...
AffineTransform[m] gives a TransformationFunction that represents an affine transform that maps r to m.r. AffineTransform[{m, v}] gives an affine transform that maps r to m.r ...
Cross
(Built-in Mathematica Symbol) Cross[a, b] gives the vector cross product of a and b.
Equivalent[e_1, e_2, ...] represents the logical equivalence e_1 \[DoubleLeftRightArrow] e_2 \[DoubleLeftRightArrow] ..., giving True when all of the e_i are the same.
IdentityMatrix[n] gives the n*n identity matrix.
MatchingDissimilarity[u, v] gives the matching dissimilarity between Boolean vectors u and v.
MatrixQ
(Built-in Mathematica Symbol) MatrixQ[expr] gives True if expr is a list of lists or a two-dimensional SparseArray object that can represent a matrix, and gives False otherwise. MatrixQ[expr, test] gives ...
SymmetricMatrixQ[m] tests whether m is a symmetric matrix.
Times
(Built-in Mathematica Symbol) x*y*z, x*y*z, or x y z represents a product of terms.
Tr
(Built-in Mathematica Symbol) Tr[list] finds the trace of the matrix or tensor list. Tr[list, f] finds a generalized trace, combining terms with f instead of Plus. Tr[list, f, n] goes down to level n in ...