I see. Thanks for your replies!
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Rank-nullity theorem states that the rank and the nullity of a matrix add
up to the number of columns of a matrix. In the following example, the
matrix defined over R has 5 columns but its rank and nullity add up to 4.
Is this a bug?
sage: m = matrix(RR,[[1,-1,2,0,3],[2,-1,3,-1,2],[3,0,3,0,6
Let L be a list. Then if I do
for i in L:
if (bool):
L.remove(i)
sage is supposed to remove all such i's in L. But sage is not doing what I
expected:
sage: M
[['1', '1', '(', '(', ')'],
['1', '1', '(', ')', '('],
['1', '(', '1', '(', ')'],
['1', '(', '1', ')', '('],
['1', '(', '(', '1
I changed my hostname and now sage works fine! Thanks a lot!
On Sunday, June 2, 2013 1:41:11 PM UTC-7, Volker Braun wrote:
>
> In any case, as a workaround you can start Sage as
>
> HOSTNAME="KuaiYu" sage
>
> from the command line.
>
>
> On Sunday, June 2,
e 2, 2013 1:26:36 PM UTC-7, Volker Braun wrote:
>
> socket.gethostname() returns illegal hostname, thats great. Apple, what
> the heck!
>
> On Sunday, June 2, 2013 9:24:01 PM UTC+1, Kuai Yu wrote:
>>
>> sage: os.environ['KuaiYu's Pro']
>>
>
> No,
hostname()
> sage: os.environ['HOSTNAME']
>
>
>
> On Sunday, June 2, 2013 9:05:32 PM UTC+1, Kuai Yu wrote:
>>
>> l"/Users/kuaiyu/.sage/temp/KuaiYu's Pro/1387"
>>
>
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ur hostname contains an apostrophe, thats totally not allowed ;) This
> ends up in the directory path and our shell script doesn't escape it
> properly. I wonder where it is coming from, can you post the output of both
>
> sage: import socket; socket.gethostname()
> sage: os.en
()
> sage: sage.env.DOT_SAGE
> sage: sage.misc.misc.SAGE_TMP
>
>
> On Saturday, June 1, 2013 9:20:58 PM UTC+1, Kuai Yu wrote:
>>
>> I'm new to Sage.
>> When trying to plot a wheelgraph on 5 vertices, I got the following error
>> message:
>> sh: -c:
GNU bash, version 3.2.48(1)-release (x86_64-apple-darwin12)
On Sunday, June 2, 2013 2:16:46 AM UTC-7, Dima Pasechnik wrote:
>
> On 2013-06-02, Kuai Yu > wrote:
> > --=_Part_2049_32398057.1370161704048
> > Content-Type: text/plain; charset=ISO-8859-1
> >
I'm running sage on Mac version 10.8.3 mountain lion. My sage version is
5.8. Is there an easy way to tell whether the shell is the cause of the
problem?
On Sunday, June 2, 2013 12:35:04 AM UTC-7, Dima Pasechnik wrote:
>
> On 2013-06-01, Kuai
I'm new to Sage.
When trying to plot a wheelgraph on 5 vertices, I got the following error
message:
sh: -c: line 0: unexpected EOF while looking for matching `''
sh: -c: line 1: syntax error: unexpected end of file
Here is my code for plotting:
sage: G = graphs.WheelGraph(4)
sage: G
Wheel graph:
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