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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
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See also:
makeUgl;
makeUsl.
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