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8.9.1 gr, hgr, gr_mod, dgr

gr(plist,vlist,order)
hgr(plist,vlist,order)
gr_mod(plist,vlist,order,p)
dgr(plist,vlist,order,procs)
:: グレブナ基底の計算

return
リスト
plist vlist procs
リスト
order
数, リストまたは行列
p
2^27 未満の素数

 
[0] load("gr")$
[64] load("cyclic")$
[74] G=gr(cyclic(5),[c0,c1,c2,c3,c4],2);
[c4^15+122*c4^10-122*c4^5-1,...]
[75] GM=gr_mod(cyclic(5),[c0,c1,c2,c3,c4],2,31991)$
24628*c4^15+29453*c4^10+2538*c4^5+7363
[76] (G[0]*24628-GM[0])%31991;
0

参照
8.9.6 dp_gr_main, dp_gr_mod_main, dp_gr_f_main, dp_weyl_gr_main, dp_weyl_gr_mod_main, dp_weyl_gr_f_main, 8.9.9 dp_ord.



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