matrix

matrix(...) -- create a matrix.

This function can be used to create a matrix or map (homomorphism) between modules, but it is complicated because there are many different ways it can be used. The entries of the matrix can be provided as a list of lists of ring elements, or as a function which accepts row and column indices. The ring of the matrix can be provided explicitly, or the source and target modules can be provided. There are other alternatives.

Various ways to use matrix.

  • matrix(List)
  • matrix(Matrix)
  • matrix(Ring,List)

    • Optional arguments, valid with each form above:

  • Degree -- specify the degree of the resulting map.

    • See also map and Matrix.

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