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7.7.11.0. makeUg2
Procedure from library ncalg.lib (see ncalg_lib).

Usage:
makeUg2([p]), p an optional int (field characteristic)

Return:
ring

Purpose:
set up the U(g_2) in variables (x(i),y(i),Ha,Hb) for i=1..6 over the field of char p

Note:
activate this ring with the setring command
the variables are ordered as x(1),...x(6),y(1),...,y(6),Ha,Hb.

Example:
 
LIB "ncalg.lib";
def a = makeUg2();
a;
==> //   characteristic : 0
==> //   number of vars : 14
==> //        block   1 : ordering dp
==> //                  : names    x(1) x(2) x(3) x(4) x(5) x(6) y(1) y(2) y(\
   3) y(4) y(5) y(6) Ha Hb
==> //        block   2 : ordering C
==> //   noncommutative relations: ...
setring a;
// ...  56  noncommutative relations
See also: makeUgl; makeUsl.