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7.10.6.1 ncInit

Procedure from library ncrat.lib (see ncrat_lib).

Usage:
ncInit(vars);
list vars containing strings

Return:
datatypes ncrat and ncrep (and token, tokenstream,
but they are not meant for users),
sets ring as 'NCRING' with nc variables from list l

Example:
 
LIB "ncrat.lib";
ncInit(list("x", "y", "z"));
NCRING;
==> // coefficients: QQ[I]/(I^2+1)
==> // number of vars : 3
==> //        block   1 : ordering dp
==> //                  : names    x y z
==> //        block   2 : ordering C