NCMatrix ^ List -- Select some rows of an NCMatrix

Operator: ^
Usage:

L = M^rows
Inputs:
- M, an instance of the type NCMatrix,
- rows, a list,
Outputs:
- L, an instance of the type NCMatrix,

Description

This command selects some rows of an NCMatrix.

i1 : A = QQ{a,b,c,d}

o1 = A

o1 : NCPolynomialRing

i2 : M = ncMatrix {{a,b,c,d},{b,c,d,a}}

o2 = | a b c d |
     | b c d a |

o2 : NCMatrix

i3 : N = M || 2*M || -3*M

o3 = | a    b    c    d    |
     | b    c    d    a    |
     | 2*a  2*b  2*c  2*d  |
     | 2*b  2*c  2*d  2*a  |
     | -3*a -3*b -3*c -3*d |
     | -3*b -3*c -3*d -3*a |

o3 : NCMatrix

i4 : N^{0,3,4}

o4 = | a    b    c    d    |
     | 2*b  2*c  2*d  2*a  |
     | -3*a -3*b -3*c -3*d |

o4 : NCMatrix

Ways to use this method:

NCMatrix ^ List -- Select some rows of an NCMatrix

The source of this document is in /build/macaulay2-88fgJW/macaulay2-1.25.11+ds/M2/Macaulay2/packages/NCAlgebra/NCAlgebraDoc.m2:918:0.