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Macaulay2 web site
submatrix
See also
submatrix'
-- exclude rows and/or columns of a matrix
Matrix _ List
-- select columns
Matrix ^ List
-- select rows
Matrix _ Array
-- component of map corresponding to summand of source
Matrix ^ Array
-- component of map corresponding to summand of target
Ways to use
submatrix
:
submatrix(Matrix,VisibleList)
-- select columns
submatrix(Matrix,Nothing,VisibleList), see
submatrix(Matrix,VisibleList,VisibleList)
-- select part of a matrix
submatrix(Matrix,VisibleList,Nothing), see
submatrix(Matrix,VisibleList,VisibleList)
-- select part of a matrix
submatrix(Matrix,VisibleList,VisibleList)
-- select part of a matrix