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7.7.10.0. makeQsl2
Procedure from library ncalg.lib (see ncalg_lib).

Usage:
makeQsl2([n]), n an optional int

Return:
ring

Purpose:
define the U_q(sl_2) as a factor-ring of a ring V_q(sl_2) modulo the ideal Qideal

Note:
the output consists of a ring, presenting V_q(sl_2) together with the ideal called Qideal in this ring
activate this ring with the setring command
in order to create the U_q(sl_2) from the output, execute the command like qring Usl2q = Qideal;
If n is specified, the quantum parameter q will be specialized at the n-th root of unity

Example:
 
See also: makeQsl3; makeQso3; makeUsl.


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