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| Bugs in matrix code? https://www.singular.uni-kl.de/forum/viewtopic.php?f=10&t=1433 |
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| Author: | Justin C. Walker [ Thu Aug 11, 2005 5:33 pm ] |
| Post subject: | Bugs in matrix code? |
This seems like a bug to me. Working with matrices, I get the following from Singular: > m; 1,2,3, 4,5,6, 7,8,9 > minor(m,2); _[1]=-3 _[2]=-6 _[3]=-6 _[4]=-12 _[5]=3 _[6]=6 _[7]=-3 _[8]=-6 _[9]=3 From hand computation, I get -3, +6, -3, +6, -12, +6, -3, +6, -3 Are we working from different definitions, or am I just off base? Regards, Justin email: justin@mac.com Posted in old Singular Forum on: 2005-04-25 02:30:46+02 |
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| Author: | wienand [ Tue Sep 20, 2005 5:00 pm ] |
| Post subject: | |
Dear Justin Walker, the Singular command minor is mainly intended for computing the ideal spanned by all the minors. Thus Singular does not care about signs. Sincerely, Oliver Wienand |
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