Matrix windows#

class sage.matrix.matrix_window.MatrixWindow#

Bases: object

add(A)#
add_prod(A, B)#
echelon_in_place()#

Calculate the echelon form of this matrix, returning the list of pivot columns

element_is_zero(i, j)#
get_unsafe(i, j)#
matrix()#

Returns the underlying matrix that this window is a view of.

matrix_window(row, col, n_rows, n_cols)#

Returns a matrix window relative to this window of the underlying matrix.

ncols()#
new_empty_window(nrows, ncols)#
new_matrix_window(matrix, row, col, n_rows, n_cols)#

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()#
set(src)#
set_to(A)#

Change self, making it equal A.

set_to_diff(A, B)#
set_to_prod(A, B)#
set_to_sum(A, B)#
set_to_zero()#
set_unsafe(i, j, x)#
subtract(A)#
subtract_prod(A, B)#
swap_rows(a, b)#
to_matrix()#

Returns an actual matrix object representing this view.