|
7.7.10.0. makeUgl
Procedure from library ncalg.lib (see ncalg_lib).
- Usage:
- makeUgl(n,[p]); n an int, n>1; p an optional int (field characteristic)
- Return:
- ring
- Purpose:
- set up the U(gl_n) in the (e_ij (1<i,j<n)) presentation (where e_ij corresponds to a matrix with 1 at i,j only) over the field of char p
- Note:
- activate this ring with the
setring command
the variables are ordered as e_12,e_13,...,e_1n,e_21,...,e_nn.
Example:
See also:
makeUg2;
makeUsl.
|