41.2 GL and SL

  • IsNaturalGL( matgrp ) P

    This property tests, whether a matrix group is the General Linear group in the right dimension over the (smallest) ring which contains all entries of its elements.

  • IsGeneralLinearGroup( grp ) P
  • IsGL( grp ) P

    The General Linear group is the group of all invertible matrices over a ring. This property tests, whether a group is isomorphic to a General Linear group.

  • IsNaturalSL( matgrp ) P

    This property tests, whether a matrix group is the Special Linear group in the right dimension over the (smallest) ring which contains all entries of its elements.

  • IsSpecialLinearGroup( grp ) P
  • IsSL( grp ) P

    The Special Linear group is the group of all invertible matrices over a ring. This property tests, whether a group is isomorphic to a Special Linear group.

    gap> IsNaturalGL(m);     
    false
    

  • IsSubgroupSL( matgrp ) P

    This property tests, whether a matrix group is a subgroup of the Special Linear group in the right dimension over the (smallest) ring which contains all entries of its elements.

    (See also section Classical Groups.)

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    GAP 4 manual
    February 2000