Matrix windows#

class sage.matrix.matrix_window.MatrixWindow[source]#

Bases: object

add(A)[source]#

add_prod(A, B)[source]#

echelon_in_place()[source]#: Calculate the echelon form of this matrix, returning the list of pivot columns

element_is_zero(i, j)[source]#

get_unsafe(i, j)[source]#

matrix()[source]#: Returns the underlying matrix that this window is a view of.

matrix_window(row, col, n_rows, n_cols)[source]#: Returns a matrix window relative to this window of the underlying matrix.

ncols()[source]#

new_empty_window(nrows, ncols)[source]#

new_matrix_window(matrix, row, col, n_rows, n_cols)[source]#: This method is here only to provide a fast cdef way of constructing new matrix windows. The only implicit assumption is that self._matrix and matrix are over the same base ring (so share the zero).

nrows()[source]#

set(src)[source]#

set_to(A)[source]#: Change self, making it equal A.

set_to_diff(A, B)[source]#

set_to_prod(A, B)[source]#

set_to_sum(A, B)[source]#

set_to_zero()[source]#

set_unsafe(i, j, x)[source]#

subtract(A)[source]#

subtract_prod(A, B)[source]#

swap_rows(a, b)[source]#

to_matrix()[source]#: Returns an actual matrix object representing this view.