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#
# jython examples for jas.
# $Id: radical-decomp_charp.py 3157 2010-05-27 19:46:36Z kredel $
#
from java.lang import System
from java.lang import Integer
from jas import Ring, PolyRing
from jas import terminate
from jas import startLog
from jas import QQ, ZM
# polynomial examples: ideal radical decomposition, dim > 0, char p separable
#r = Ring( "Rat(x) L" );
#r = Ring( "Q(x) L" );
r = PolyRing(ZM(5),"x,y,z",PolyRing.lex);
print "Ring: " + str(r);
print;
[one,x,y,z] = r.gens();
#f1 = (x**2 - 5)**2;
#f1 = (y**10 - x**5)**3;
f2 = y**6 + 2 * x * y**4 + 3 * x**2 * y**2 + 4 * x**3;
f2 = f2**5;
f3 = z**10 - x**5;
f4 = (y**2 - x)**3;
#print "f1 = ", f1;
print "f2 = ", f2;
print "f3 = ", f3;
#print "f4 = ", f4;
print;
F = r.ideal( list=[f2,f3] );
print "F = ", F;
print;
startLog();
t = System.currentTimeMillis();
R = F.radicalDecomp();
t = System.currentTimeMillis() - t;
print "R = ", R;
print;
print "decomp time =", t, "milliseconds";
print;
print "F = ", F;
print;
#startLog();
terminate();
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