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 ...

ExampleData (Built-in Mathematica Symbol)

ExampleData["type"] gives a list of names of examples of the specified type.ExampleData[{" type", " name"}] gives the default form of the named example of the specified ...

Work with Sparse Matrices (Mathematica How To)

Sparse representations of matrices are useful because they do not store every element. If one particular value appears very frequently it can be very advantageous to use a ...

KirchhoffGraph (Built-in Mathematica Symbol)

KirchhoffGraph[kmat] gives the graph with Kirchhoff matrix kmat.KirchhoffGraph[{v_1, v_2, ...}, kmat] gives the graph with vertices v_i and Kirchhoff matrix kmat.

OutputControllabilityMatrix (Built-in Mathematica Symbol)

OutputControllabilityMatrix[ss] gives the output controllability matrix of the StateSpaceModel object ss.

Dot (Built-in Mathematica Symbol)

a.b.c or Dot[a, b, c] gives products of vectors, matrices, and tensors.

Put Data in a Grid with the Front End (Mathematica How To)

While you can programmatically create two-dimensional layouts, the Mathematica front end provides convenient tools for creating and editing two-dimensional grids of data, in ...

ArrayQ (Built-in Mathematica Symbol)

ArrayQ[expr] gives True if expr is a full array or a SparseArray object, and gives False otherwise. ArrayQ[expr, patt] requires expr to be a full array with a depth that ...

WignerD (Built-in Mathematica Symbol)

WignerD[{j, m_1, m_2}, \[Psi], \[Theta], \[Phi]] gives the Wigner D-function D_m_1^m_2, j(\[Psi], \[Theta], \[Phi]).WignerD[{j, m_1, m_2}, \[Theta], \[Phi]] gives the Wigner ...

CholeskyDecomposition (Built-in Mathematica Symbol)

CholeskyDecomposition[m] gives the Cholesky decomposition of a matrix m.