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D.2.11.5 defrings

Procedure from library ring.lib (see ring_lib).

Usage:
defrings(n,[p]); n,p integers

Return:
ring R with characteristic p [default: p=32003], ordering ds and n variables x,y,z,a,b,...if n<=26 (resp. x(1..n) if n>26)

Note:
This proc uses 'execute' or calls a procedure using 'execute'.

Example:
 
LIB "ring.lib";
def S5=defrings(5,0); S5; "";
==> // coefficients: QQ
==> // number of vars : 5
==> //        block   1 : ordering ds
==> //                  : names    x y z a b
==> //        block   2 : ordering C
==> 
def S30=defrings(30); S30;
==> // coefficients: ZZ/32003
==> // number of vars : 30
==> //        block   1 : ordering ds
==> //                  : names    x(1) x(2) x(3) x(4) x(5) x(6) x(7) x(8) x(\
   9) x(10) x(11) x(12) x(13) x(14) x(15) x(16) x(17) x(18) x(19) x(20) x(21\
   ) x(22) x(23) x(24) x(25) x(26) x(27) x(28) x(29) x(30)
==> //        block   2 : ordering C
kill S5,S30;