# Matrix ^ List -- select rows

## Synopsis

• Operator: ^
• Usage:
f_rows
• Inputs:
• f, , a matrix between free modules
• rows, a list, a list of integers denoting the choice of rows
• Outputs:
• , the submatrix of f corresponding to the rows in the list rows.

## Description

This is the same as calling submatrix(f,rows,).
 i1 : R = QQ[a..f]; i2 : p = matrix {{a,b,c},{d,e,f}} o2 = | a b c | | d e f | 2 3 o2 : Matrix R <--- R i3 : p^{1} o3 = | d e f | 1 3 o3 : Matrix R <--- R i4 : p^{1,0} o4 = | d e f | | a b c | 2 3 o4 : Matrix R <--- R