#4 closed bug (fixed)
Addition nicht-kommutativer Ringe
Reported by: | Oleksandr | Owned by: | Oleksandr |
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Priority: | minor | Milestone: | Releases 3-0-x and lower |
Component: | singular-kernel | Version: | 3-0-5 |
Keywords: | SCA, NC | Cc: | motsak@… |
Description
LIB "ncall.lib"; ring r=2,(x,y,z),dp; ring s=0,(a,b,c,d),dp; def nc_s=SuperCommutative?(3,4); def R=r+nc_s; setring R; R;
characteristic : 2 number of vars : 7 block 1 : ordering dp : names x y z block 2 : ordering dp : names a b c d block 3 : ordering C noncommutative relations: quotient ring from ideal _[1]=d2 _[2]=c2
def X=nc_s+r;
Error on recognizing nc types
setring X; X;
characteristic : 2 number of vars : 7 block 1 : ordering dp : names a b c d block 2 : ordering dp : names x y z block 3 : ordering C noncommutative relations: quotient ring from ideal _[1]=d2 _[2]=c2
Sowohl R=r+nc_s als auch X=nc_s+r haben das zu erwartende Ergebnis, aber bei letzterem gibt es Error on recognizing nc types
Ist diese Fehlermeldung ein Fehler? Oder ist es wirklich nicht erlaubt, nc_s+r zu sagen (warum?), waerend r+nc_s problemlos geht?
Attachments (1)
Change History (4)
Changed 15 years ago by
Attachment: | sum.bug.sing added |
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comment:1 Changed 15 years ago by
Status: | new → assigned |
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comment:2 Changed 15 years ago by
Resolution: | → fixed |
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Status: | assigned → closed |
This was fixed as a part of major NC redesign.
comment:3 Changed 14 years ago by
Milestone: | milestone1 → before Release 3-1-0 |
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Milestone milestone1 deleted
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