Opened 16 years ago

Closed 16 years ago

Last modified 15 years ago

#4 closed bug (fixed)

Addition nicht-kommutativer Ringe

Reported by: Oleksandr Owned by: Oleksandr
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)

sum.bug.sing (1.1 KB) - added by Oleksandr 16 years ago.
test

Download all attachments as: .zip

Change History (4)

Changed 16 years ago by Oleksandr

Attachment: sum.bug.sing added

test

comment:1 Changed 16 years ago by Oleksandr

Status: newassigned

comment:2 Changed 16 years ago by Oleksandr

Resolution: fixed
Status: assignedclosed

This was fixed as a part of major NC redesign.

comment:3 Changed 15 years ago by seelisch

Milestone: milestone1before Release 3-1-0

Milestone milestone1 deleted

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