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4 Matrices and Tensors

In JACAL, a matrix is just a bunch of equal length bunchs, and this is the structure that the matrix operations currently supported by JACAL (ncmult(), ^^, transpose(), etc.) expect. A row-vector is coded like [[a,b,c]]; a column-vector is coded by [[a],[b],[c]] or [[a,b,c]]^^t or [a,b,c]^^t.

• Generating Matrices
• Matrix Parts
• Matrix commands
• Tensors
• Tensor Multiplication
• Tensor contraction
• Shifting of Tensor Indices
• Swapping of Tensor Indices